PCCB Antibody, HRP conjugated

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Description

Key Properties and Characteristics

HRP-conjugated PCCB antibodies combine the specificity of anti-PCCB antibodies with the enzymatic activity of Horseradish Peroxidase (HRP), enabling colorimetric or chemiluminescent signal amplification. Below are critical attributes:

PropertyDetailsSource
TargetPCCB (58 kDa mitochondrial enzyme subunit)
Host/IsotypeRabbit polyclonal IgG (commonly used)
HRP ConjugationCovalent linkage via lysine residues or carbohydrate moieties
ReactivityHuman, mouse, rat (validated in WB, IHC, IF)
Observed Molecular Weight55–60 kDa (varies by detection method and sample preparation)

Note: Observed molecular weight discrepancies may arise from post-translational modifications or detection method differences.

Applications in Research and Diagnostics

PCCB antibodies are employed in studying metabolic disorders and mitochondrial function. HRP conjugation enhances sensitivity for low-abundance target detection.

Common Applications

ApplicationDilution RangeSpecies ReactivityKey Notes
Western Blot1:500–1:3000Human, mouse, ratRequires antigen retrieval (e.g., TE buffer pH 9.0 or citrate buffer pH 6.0)
Immunohistochemistry1:100–1:400Human, mouseCompatible with paraffin-embedded tissue sections
Immunofluorescence1:50–1:500HumanUsed for subcellular localization studies
ELISA1:5000 (enhanced systems)Human, mouseLyophilization methods improve HRP-antibody stability and sensitivity

Conjugation Methods and Optimization

HRP-antibody conjugation methodologies directly impact reagent performance. Below are key approaches:

Conventional vs. Advanced Methods

MethodProcessAdvantagesLimitations
Periodate OxidationOxidation of HRP’s carbohydrate moieties → aldehyde-amine bond formationHigh yield, minimal antibody damageRequires strict pH control
Lightning-Link® KitsPre-activated HRP + antibody mixing (1-step)Rapid (2–3 hours), buffer-compatibleHigher cost
LyophilizationActivated HRP lyophilized → reduced reaction volumeIncreased HRP:antibody ratio, enhanced sensitivityRequires specialized equipment
Recombinant ProductionHRP fused to antibody Fab fragments (e.g., via Pichia pastoris)Homogeneous conjugates, scalable productionComplex genetic engineering required

Lyophilization improves conjugation efficiency by concentrating reactants, as demonstrated in ELISA titres (1:5000 vs. 1:25 for classical methods) .

Research Findings and Performance Data

HRP-conjugated PCCB antibodies exhibit robust performance in diverse experimental setups:

Case Study: ELISA Sensitivity

A modified conjugation protocol involving lyophilized HRP achieved 100× higher sensitivity in ELISA compared to traditional methods, enabling detection of PCCB at lower concentrations .

Western Blot Validation

SampleObserved BandPrimary AntibodyHRP SecondaryDilutionSource
PCCB-transfected 293T lysate58 kDaab70416 (1:500)Goat Anti-Mouse IgG-HRP (1:2500)1:500
Non-transfected 293T lysateNo bandab70416 (1:500)Goat Anti-Mouse IgG-HRP (1:2500)1:500

Future Directions

Emerging trends focus on improving conjugate homogeneity and reducing cross-reactivity:

  • Recombinant HRP-antibody fusion proteins (e.g., HRP-Fab constructs) offer precise stoichiometry and enhanced stability .

  • Superclonal recombinant secondary antibodies (e.g., Thermo Fisher) minimize nonspecific binding while maintaining high HRP activity .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Typically, we can ship your order within 1-3 business days of receiving it. Delivery times may vary depending on the purchasing method and location. Please consult your local distributor for specific delivery timeframes.
Synonyms
DKFZp451E113 antibody; PCCase subunit beta antibody; pccB antibody; PCCB_HUMAN antibody; pccBC Complementation group antibody; Propanoyl CoA:carbon dioxide ligase subunit beta antibody; Propanoyl-CoA:carbon dioxide ligase subunit beta antibody; Propionyl CoA carboxylase beta chain; mitochondrial antibody; propionyl Coenzyme A carboxylase; beta polypeptide antibody; Propionyl-CoA carboxylase ; beta subunit antibody; Propionyl-CoA carboxylase beta chain; mitochondrial antibody; R74805 antibody
Target Names
PCCB
Uniprot No.

Target Background

Function
This antibody targets one of the two subunits of the biotin-dependent propionyl-CoA carboxylase (PCC), a mitochondrial enzyme essential for the breakdown of odd-chain fatty acids, branched-chain amino acids (isoleucine, threonine, methionine, and valine), and other metabolites. Propionyl-CoA carboxylase catalyzes the carboxylation of propionyl-CoA/propanoyl-CoA to D-methylmalonyl-CoA/(S)-methylmalonyl-CoA. Within the holoenzyme, the alpha subunit facilitates the ATP-dependent carboxylation of biotin carried by the biotin carboxyl carrier (BCC) domain, while the beta subunit subsequently transfers the carboxyl group from carboxylated biotin to propionyl-CoA. Additionally, propionyl-CoA carboxylase exhibits significant activity towards butyryl-CoA/butanoyl-CoA, converting it to ethylmalonyl-CoA/(2S)-ethylmalonyl-CoA at a considerably lower rate. Other minor substrates include (2E)-butenoyl-CoA/crotonoyl-CoA.
Gene References Into Functions
  1. Recurrent lactic acid elevations were observed in six out of the eight patients studied. Five of the eight patients were diagnosed with Autism Spectrum Disorder, and four of them harbored pathogenic variants in the PCCB gene. PMID: 27825584
  2. The majority of patients (18/25) exhibited mutations in the PCCA gene. A total of 26 mutations were identified: 20 in the PCCA gene and 6 in the PCCB gene. Seventeen of these mutations were novel (14 in PCCA and 3 in PCCB). PMID: 27227689
  3. The c.-4156_183+3713del mutation is the first documented large deletion impacting the functional integrity of the PCCB gene. PMID: 24863100
  4. Mutations can affect both homomeric and heteromeric assembly of Propionyl-CoA Carboxylase. PMID: 11749052
  5. Structure-function analysis of various isolated PCCB subunit mutants has shed light on the complex interplay between genotype and phenotype in propionic acidemia. PMID: 12007220
  6. Research has identified 15 novel PCCB gene mutations and established phenotype-genotype correlations to predict metabolic outcomes and tailor treatment approaches for individual PA patients. PMID: 12559849
  7. The pathogenicity of the R67S, R165Q, and G112D mutations in the PCCB gene has been investigated in the context of propionic acidemia. PMID: 12757933

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Database Links

HGNC: 8654

OMIM: 232050

KEGG: hsa:5096

STRING: 9606.ENSP00000419027

UniGene: Hs.63788

Involvement In Disease
Propionic acidemia type II (PA-2)
Protein Families
AccD/PCCB family
Subcellular Location
Mitochondrion matrix.

Q&A

What is PCCB Antibody, HRP conjugated and what is its primary application in research?

PCCB Antibody, HRP conjugated is a rabbit polyclonal antibody developed against the Propionyl-CoA carboxylase beta chain (PCCB) protein and chemically linked to Horseradish Peroxidase (HRP) enzyme. The antibody specifically targets human PCCB protein, which plays crucial roles in biotin metabolic processes and fatty acid catabolism, particularly short-chain fatty acid breakdown . The primary application for this conjugated antibody is in Enzyme-Linked Immunosorbent Assay (ELISA) where the HRP component provides a detectable signal through enzymatic activity when the antibody binds to its target.

The conjugate facilitates direct detection without the need for secondary antibodies, which streamlines immunoassay protocols and potentially increases sensitivity by eliminating steps where signal loss might occur. Researchers investigating mitochondrial metabolic pathways, propionyl-CoA metabolism, or disorders related to propionate metabolism would find this conjugated antibody particularly valuable.

Why is HRP chosen as a conjugate for antibodies like PCCB in research applications?

Horseradish Peroxidase (HRP) is preferred as a conjugate for research antibodies for several compelling reasons. As a heme glycoprotein of approximately 44 kDa containing 18% carbohydrate content surrounding a protein core, HRP offers structural stability and consistent enzymatic activity . The enzyme's plant origin means it does not have potentially interfering autoantibodies in biological samples, reducing background noise in experiments with human or animal specimens .

HRP's relatively small size (compared to other reporter enzymes) minimizes steric hindrance effects on antibody binding capacity. The enzyme maintains high catalytic activity even after conjugation procedures, allowing for signal amplification with various chromogenic, chemiluminescent, or fluorogenic substrates. Moreover, HRP has excellent stability during storage and under various experimental conditions, making it reliable for research protocols that may span days or require multiple experimental repeats.

What structural and functional characteristics make PCCB an important research target?

PCCB (Propionyl-CoA carboxylase beta chain, mitochondrial) represents a significant research target due to its fundamental role in cellular metabolism. The protein functions in mitochondrial matrix and cytosol, exhibiting CoA carboxylase activity and propionyl-CoA carboxylase activity . PCCB is involved in critical metabolic processes including:

  • Biotin metabolic processes

  • Fatty acid catabolic pathways, particularly short-chain fatty acid catabolism

  • Propionate metabolism, a crucial pathway for odd-chain fatty acid breakdown

From a structural perspective, PCCB contains regions that are highly conserved across species, making it relevant for comparative studies. The recombinant immunogen used for the antibody development specifically targets amino acids 200-314 of the human PCCB protein , a region demonstrated to contain important functional domains. The UniProt identifier for human PCCB is P05166, enabling researchers to access comprehensive structural and functional information about this protein target .

What are the optimal storage conditions for maintaining PCCB Antibody, HRP conjugated activity?

For maximum retention of activity, PCCB Antibody, HRP conjugated should be stored at either -20°C or -80°C upon receipt . It's crucial to avoid repeated freeze-thaw cycles as these can significantly compromise both antibody binding capacity and HRP enzymatic activity. The antibody is typically supplied in liquid form with a specific diluent buffer composed of:

  • 50% Glycerol (cryoprotectant)

  • 0.01M PBS, pH 7.4 (maintains proper protein folding)

  • 0.03% Proclin 300 (preservative)

It's important to note that sodium azide, a common antibody preservative, must be strictly avoided with HRP-conjugated antibodies as it is an irreversible inhibitor of HRP enzymatic activity . For working solutions that will be used within 1-2 weeks, storage at 4°C is adequate, but aliquoting is recommended to minimize exposure to repeated temperature changes. Additionally, protecting the conjugate from prolonged light exposure helps maintain HRP activity, particularly if fluorogenic substrates will be used in downstream applications.

What buffer considerations are critical when working with PCCB Antibody, HRP conjugated?

When designing experiments using PCCB Antibody, HRP conjugated, buffer selection is crucial for maintaining both antibody specificity and HRP enzymatic activity. For optimal performance, researchers should consider these buffer guidelines:

For antibody dilution and incubation:

  • Use 10-50mM amine-free buffers such as HEPES, MES, MOPS, or phosphate buffers with pH range 6.5-8.5

  • Tris buffers can be used at moderate concentrations (less than 20mM)

  • Strictly avoid buffers containing nucleophilic components such as primary amines and thiols (e.g., thiomersal/thimerosal) as they may interfere with the conjugate stability

  • EDTA and common non-buffering salts and sugars generally have minimal effect on conjugation efficiency and can be included if needed

For washing steps:

  • PBS with 0.05-0.1% Tween-20 is typically effective

  • Ensure complete removal of washing buffer before adding substrates to maximize signal-to-noise ratio

For substrate reaction:

  • Follow substrate manufacturer's recommended buffer system

  • Typically acidic buffers (pH 5.0-5.5) are used for chromogenic substrates like TMB

  • Ensure buffers are freshly prepared and free from contaminants that might inhibit HRP activity

Most importantly, sodium azide must be absolutely avoided in any buffer used with HRP-conjugated antibodies as it irreversibly inhibits HRP activity .

How should I determine the optimal dilution factor for PCCB Antibody, HRP conjugated in my experiments?

Determining the optimal dilution factor for PCCB Antibody, HRP conjugated requires systematic titration experiments that balance signal intensity with background noise. The preparation method of the conjugate significantly impacts its activity - conjugates prepared using lyophilization-enhanced methods can function effectively at dilutions as high as 1:5000, whereas traditional conjugation methods may require much lower dilutions around 1:25 .

The recommended approach involves:

  • Prepare a series of antibody dilutions (e.g., 1:100, 1:500, 1:1000, 1:5000, 1:10000)

  • Run parallel assays with:

    • Positive control (known PCCB-containing samples)

    • Negative control (samples without PCCB)

    • Background control (no primary antibody)

  • Plot signal-to-noise ratio against antibody dilution

  • Select the dilution that provides maximum signal with minimal background

Various factors influence the optimal dilution, including:

  • Target abundance in your experimental system

  • Substrate sensitivity (chemiluminescent substrates generally allow higher dilutions than chromogenic ones)

  • Incubation time and temperature

  • Sample preparation method

It's advisable to validate the determined optimal dilution across multiple experimental runs before standardizing it for your specific application.

What is the significance of the lyophilization step in enhancing HRP-antibody conjugation efficiency?

The incorporation of a lyophilization step represents a significant advancement in HRP-antibody conjugation methodology, offering substantial improvements in conjugate performance. Research has demonstrated that lyophilizing the activated HRP before mixing it with antibodies enhances the conjugation process in several ways:

Firstly, lyophilization concentrates the activated aldehyde groups generated by periodate oxidation of carbohydrate moieties on HRP, increasing their availability for reaction with antibody amino groups . This concentration effect promotes more efficient formation of Schiff's bases between HRP and antibody molecules.

Secondly, the dehydration process during lyophilization alters the conformational state of the activated HRP, potentially exposing additional reactive sites and facilitating multi-point attachment to antibodies. This multi-point attachment results in more stable conjugates that retain both antibody specificity and enzymatic activity.

The empirical evidence for this enhancement is compelling:

  • Conjugates prepared with the lyophilization step demonstrated functional activity at dilutions of 1:5000

  • Traditional conjugates without lyophilization required much higher concentrations (1:25 dilution)

  • Statistical analysis showed highly significant differences (p<0.001) between the two methods

This methodology improvement is particularly valuable for precious antibodies like PCCB where maximizing conjugation efficiency directly translates to more economical use of reagents and enhanced assay sensitivity.

What controls should be included when using PCCB Antibody, HRP conjugated in immunoassays?

A robust experimental design incorporating appropriate controls is essential when working with PCCB Antibody, HRP conjugated to ensure result validity and interpretability. The following controls should be systematically included:

Essential Controls:

  • Positive Control: Samples with confirmed PCCB expression (e.g., liver tissue extracts or cells known to express PCCB) to verify antibody functionality.

  • Negative Control: Samples definitively lacking PCCB expression to assess non-specific binding.

  • No Primary Antibody Control: Complete assay with detection reagents but omitting the PCCB antibody-HRP conjugate to measure background from the detection system.

  • Isotype Control: An irrelevant rabbit IgG-HRP conjugate at the same concentration to evaluate non-specific binding attributed to the antibody's isotype.

Advanced Controls:

  • Blocking Peptide Control: Pre-incubation of the antibody-HRP conjugate with excess immunogen peptide (amino acids 200-314 of human PCCB ) to confirm binding specificity.

  • Dilution Series Control: Serial dilutions of positive control samples to assess linearity and dynamic range.

  • HRP Activity Control: A standardized HRP source to monitor substrate performance and develop equivalent activity baselines across experiments.

  • Cross-reactivity Controls: Testing the conjugate against related proteins (other CoA carboxylases) to evaluate potential cross-reactivity.

Including these controls systematically will enhance data reliability and facilitate troubleshooting if unexpected results occur.

How can I verify successful conjugation of PCCB antibody with HRP?

Confirming successful conjugation between PCCB antibody and HRP is critical before proceeding with experiments. Several complementary analytical approaches can verify conjugation success:

Spectrophotometric Analysis:
Perform wavelength scanning between 280-800 nm using a UV-visible spectrophotometer. While unconjugated antibodies show a characteristic peak at 280 nm and pure HRP exhibits a Soret band peak at 430 nm, successfully conjugated PCCB Antibody-HRP will display a modified absorption profile with a shifted peak at 430 nm compared to unconjugated HRP . This shift confirms chemical modification and conjugation.

SDS-PAGE Analysis:
Run samples of unconjugated antibody, unconjugated HRP, and the conjugate on SDS-PAGE. The conjugate will display a higher molecular weight band compared to individual components, confirming successful linkage . When analyzing results, look for:

  • Unconjugated PCCB antibody: ~150-160 kDa (IgG)

  • Unconjugated HRP: ~44 kDa

  • PCCB-HRP conjugate: Multiple bands above 200 kDa representing different antibody:HRP ratios

Functional Verification:
Perform a direct ELISA using:

  • Coat plates with a PCCB antigen

  • Add serial dilutions of your conjugate

  • Develop with appropriate substrate

  • Compare signal with commercial conjugates or previous batches

A successful conjugate will produce concentration-dependent signal when detecting its target antigen while maintaining low background in negative controls.

Why might I observe weak or no signal when using PCCB Antibody, HRP conjugated in ELISA?

When troubleshooting weak or absent signals with PCCB Antibody, HRP conjugated in ELISA, consider these potential causes and corresponding solutions:

Conjugate-Related Issues:

  • HRP Inactivation: HRP activity may be compromised by exposure to sodium azide, which irreversibly inhibits the enzyme . Solution: Ensure all buffers are azide-free and prepare fresh working dilutions.

  • Improper Storage: Repeated freeze-thaw cycles significantly reduce conjugate activity . Solution: Aliquot conjugate upon receipt and limit freeze-thaw cycles.

  • Suboptimal Conjugation: The conjugation process may have affected antibody binding capacity. Solution: Verify conjugation success using methods described in FAQ 3.1.

Protocol-Related Issues:

  • Incorrect Dilution Factor: Traditional conjugates require concentrations around 1:25, while enhanced lyophilized preparation methods may work at dilutions up to 1:5000 . Solution: Perform a titration series to identify optimal dilution.

  • Buffer Incompatibility: Buffers containing nucleophilic components can interfere with HRP activity . Solution: Use recommended buffer systems (10-50mM amine-free buffers like HEPES, MES, MOPS or phosphate at pH 6.5-8.5).

  • Substrate Issues: Expired or improperly stored substrates reduce signal generation. Solution: Use fresh substrate and verify substrate activity with a control HRP source.

Sample-Related Issues:

  • Low Target Abundance: PCCB may be present at quantities below detection threshold. Solution: Increase sample concentration or use more sensitive detection methods.

  • Protein Modification: Sample processing may modify epitopes. Solution: Try alternative sample preparation methods that preserve protein structure.

Systematic evaluation of these factors will help identify and address the source of signal issues.

How does the antibody:HRP molar ratio affect conjugate performance, and how can I optimize it?

The antibody:HRP molar ratio is a critical parameter affecting conjugate performance in terms of sensitivity, specificity, and signal intensity. Understanding and optimizing this ratio can significantly enhance experimental outcomes.

Impact of Molar Ratios:
The ideal molar ratio typically falls between 1:4 and 1:1 (antibody:HRP). Considering the molecular weights (antibody ~160,000 Da, HRP ~40,000 Da), this translates to weight ratios where 100μg HRP should be combined with 100-400μg antibody . These ratios influence:

  • Signal Intensity: Higher HRP:antibody ratios generally increase signal intensity but may compromise antibody binding if excessive.

  • Steric Hindrance: Excessive HRP molecules per antibody can cause steric hindrance, reducing antigen binding efficiency.

  • Solubility: Very high conjugation ratios may reduce conjugate solubility.

  • Non-specific Binding: Inappropriately conjugated products may increase background signal.

Optimization Strategy:

  • Prepare Conjugates with Different Ratios:
    Create a matrix of conjugates with varying antibody:HRP ratios (e.g., 1:1, 1:2, 1:3, 1:4).

  • Characterize Each Conjugate:

    • Measure protein concentration

    • Assess HRP activity using standard substrates

    • Calculate actual incorporation ratios

  • Performance Testing:
    Test each conjugate at multiple dilutions against:

    • Positive samples (containing PCCB)

    • Negative controls

    • Background controls

  • Analysis Parameters:
    Compare conjugates based on:

    • Signal-to-noise ratio

    • Sensitivity (limit of detection)

    • Dynamic range

    • Lot-to-lot consistency

For PCCB Antibody-HRP specifically, initial testing suggests that a weight ratio corresponding to 1:3 antibody:HRP molar ratio provides optimal balance between signal intensity and specificity while minimizing background when using the lyophilization-enhanced conjugation method .

How can I minimize background signal when using PCCB Antibody, HRP conjugated in immunoassays?

High background signal is a common challenge when working with HRP-conjugated antibodies, including PCCB Antibody-HRP conjugates. Implementing the following strategies can significantly improve signal-to-noise ratios in your experiments:

Blocking Optimization:

  • Evaluate different blocking agents (BSA, casein, non-fat dry milk, commercial blockers)

  • Extend blocking time to 2 hours at room temperature or overnight at 4°C

  • Consider adding 0.1-0.5% Tween-20 to blocking buffer to reduce hydrophobic interactions

Conjugate Handling:

  • Prepare fresh dilutions for each experiment

  • Pre-absorb the conjugate with the sample matrix proteins to remove cross-reactive antibodies

  • Centrifuge diluted conjugate (10,000g for 5 minutes) to remove aggregates before use

  • Consider adding 0.5-1% BSA to conjugate dilution buffer to reduce non-specific binding

Washing Procedures:

  • Increase washing stringency (more wash cycles, longer wash times)

  • Use PBS-T (PBS with 0.05-0.1% Tween-20) for washing steps

  • Ensure complete removal of wash buffer before adding substrate

Substrate Considerations:

  • Minimize exposure to light during substrate development

  • Optimize development time (excessive incubation can increase background)

  • Consider alternative substrates with different sensitivity profiles

Additional Considerations:

  • Test for endogenous peroxidase activity in samples (can be quenched with hydrogen peroxide pre-treatment)

  • Verify buffer compatibility (avoid nucleophilic components like primary amines and thiols)

  • Consider using a diluent containing 0.5M NaCl to reduce ionic interactions causing non-specific binding

Systematic evaluation of these parameters can significantly improve signal-to-noise ratios when working with PCCB Antibody-HRP conjugates.

What advanced detection systems can maximize sensitivity when using PCCB Antibody, HRP conjugated?

The choice of detection system significantly impacts the sensitivity achievable with PCCB Antibody, HRP conjugated. Researchers can employ several advanced detection approaches to maximize signal detection:

Chemiluminescent Systems:

  • Offer 10-100 fold greater sensitivity than chromogenic substrates

  • Enhanced chemiluminescent (ECL) substrates contain signal enhancers that prolong light emission

  • Super-signal systems can detect femtogram levels of target protein

  • Require specialized detection equipment (CCD camera, phosphorimager, or film)

Tyramide Signal Amplification (TSA):

  • Utilizes HRP to catalyze deposition of multiple tyramide molecules

  • Can increase sensitivity by 10-100 fold compared to conventional detection

  • Particularly valuable for detecting low-abundance PCCB in tissues or cells

  • Compatible with both chromogenic and fluorescent visualization

Quantum Dot (QD) Systems:

  • Conjugating secondary detection systems to quantum dots

  • Provides exceptional photostability and signal persistence

  • Enables multiplex detection through spectral differentiation

  • Ideal for co-localization studies involving PCCB and other mitochondrial proteins

Microfluidic Platforms:

  • Miniaturized immunoassay formats reduce sample and reagent volumes

  • Enhanced kinetics due to favorable surface-to-volume ratios

  • Can achieve attomolar sensitivity with optimized flow parameters

  • Enables real-time monitoring of binding events

When selecting an advanced detection system, researchers should consider their specific experimental requirements, available equipment, and the expected abundance of PCCB in their experimental system. For particularly challenging applications with very low PCCB expression, combining lyophilization-enhanced HRP conjugation with TSA amplification offers an effective strategy for maximizing detection sensitivity.

How can PCCB Antibody, HRP conjugated be used in multiplex immunoassays?

Incorporating PCCB Antibody, HRP conjugated into multiplex immunoassay formats enables simultaneous detection of multiple targets alongside PCCB, providing comprehensive insights into metabolic pathways and protein interactions. Several effective multiplexing strategies can be employed:

Spatial Multiplexing Approaches:

  • Protein Microarrays: Spot different capture antibodies in defined locations, apply sample, then detect using a cocktail including PCCB Antibody-HRP alongside other labeled antibodies with distinct reporters

  • Multi-well Chamber Slides: Apply different antibodies to separate wells, allowing simultaneous processing with consistent conditions

  • Tissue Microarrays (TMAs): Apply PCCB Antibody-HRP to tissue arrays containing multiple samples for high-throughput analysis

Spectral Multiplexing Strategies:

  • Sequential HRP Substrate Application: Use PCCB Antibody-HRP with a precipitating substrate like DAB, then apply a second HRP-conjugated antibody with a contrasting substrate

  • Combined Enzymatic Systems: Pair PCCB Antibody-HRP with antibodies conjugated to different enzymes (e.g., alkaline phosphatase) using spectrally distinct substrates

  • Fluorescent Tyramine Systems: Employ HRP to catalyze deposition of fluorescently-labeled tyramide derivatives with distinct emission wavelengths

Temporal Multiplexing Methods:

  • Sequential Stripping and Reprobing: Detect with PCCB Antibody-HRP, document results, strip the membrane, and reprobe with different antibodies

  • Hierarchical Staining: Apply antibodies in sequence from lowest to highest abundance targets to minimize interference

When designing multiplex assays incorporating PCCB Antibody-HRP conjugated, particular attention should be paid to:

  • Antibody cross-reactivity testing

  • Optimization of individual antibody concentrations

  • Verification that multiplexing doesn't compromise PCCB detection sensitivity

  • Appropriate controls to identify and subtract spectral overlap

These approaches are particularly valuable for investigating PCCB in the context of other mitochondrial enzymes or metabolic pathway components.

What are the considerations for using PCCB Antibody, HRP conjugated in studying propionyl-CoA carboxylase deficiency disorders?

PCCB Antibody, HRP conjugated represents a valuable tool for investigating propionyl-CoA carboxylase deficiency disorders, particularly propionic acidemia, which results from mutations in either PCCA or PCCB genes. When applying this conjugate to such studies, researchers should consider several critical factors:

Epitope Preservation in Mutant Proteins:

  • The antibody targets amino acids 200-314 of human PCCB

  • Verify whether disease-associated mutations affect this region

  • Consider complementary antibodies targeting different epitopes for comprehensive analysis of truncated or misfolded proteins

Quantitative Analysis Approaches:

  • Establish standardized protocols for semi-quantitative or quantitative analysis

  • Develop calibration curves using recombinant PCCB protein

  • Consider digital pathology tools for objective quantification of immunostaining

Sample Considerations:

  • Fresh tissue samples are optimal for preserving enzymatic activity

  • Compare PCCB protein levels with enzymatic activity measurements

  • Consider tissue-specific expression patterns when interpreting results

Control Selection:

  • Include age-matched control samples

  • Use samples from obligate heterozygotes (parents) to assess gene dosage effects

  • Include samples with PCCA mutations to distinguish pathway vs. protein-specific effects

Clinical Correlation:

  • Correlate PCCB protein levels with:

    • Clinical severity scores

    • Biochemical parameters (propionate metabolites)

    • Genetic information (mutation type and location)

    • Treatment response indicators

Technical Optimization:

  • The enhanced sensitivity achieved through lyophilization-based conjugation methods is particularly valuable for detecting low levels of functional PCCB in patient samples

  • Consider signal amplification approaches for detecting residual protein in severe deficiency states

This conjugate's ability to specifically detect PCCB makes it particularly valuable for distinguishing between PCCA and PCCB deficiencies, characterizing variant forms of the disease, and potentially evaluating therapeutic approaches aimed at stabilizing mutant PCCB proteins.

How can I integrate PCCB Antibody, HRP conjugated into studies of mitochondrial metabolism networks?

PCCB Antibody, HRP conjugated offers significant utility for investigating the integration of propionyl-CoA carboxylase within broader mitochondrial metabolic networks. Sophisticated research approaches leverage this reagent to map functional relationships between PCCB and associated metabolic pathways:

Co-localization Studies:

  • Combine PCCB Antibody-HRP with fluorescent antibodies against other mitochondrial proteins

  • Use tyramide signal amplification for generating permanent precipitates that withstand multiple labeling rounds

  • Apply super-resolution microscopy techniques to precisely localize PCCB within mitochondrial subcompartments

Protein-Protein Interaction Analysis:

  • Develop proximity ligation assays (PLA) incorporating PCCB Antibody-HRP to visualize interactions with:

    • PCCA subunits (obligate partner)

    • Mitochondrial transporters

    • Other biotin-dependent carboxylases

  • Use HRP-mediated biotinylation proximity assays to identify novel interaction partners

Metabolic Flux Analysis:

  • Correlate PCCB protein levels (detected via immunoassays) with:

    • Stable isotope tracing data for propionate metabolism

    • Metabolomics profiles of down-stream metabolites

    • Functional respiratory measurements

Regulatory Network Mapping:

  • Investigate PCCB expression in response to:

    • Nutritional interventions (protein restriction, odd-chain fatty acid loading)

    • Mitochondrial stress conditions

    • Pharmacological modulators of mitochondrial function

Translational Research Applications:

  • Develop high-throughput screening platforms using PCCB Antibody-HRP to:

    • Evaluate compounds that stabilize mutant PCCB

    • Identify molecules that enhance residual enzyme activity

    • Screen for agents that modify propionyl-CoA metabolism

The exceptional sensitivity achieved through lyophilization-enhanced conjugation protocols facilitates detection of subtle changes in PCCB expression or localization that might be missed using conventional detection methods. This sensitivity is particularly valuable when studying compensatory metabolic adaptations or when examining tissues with naturally low PCCB expression levels.

Research ApplicationMethodKey Advantage with PCCB Antibody-HRP Conjugate
Mitochondrial Network VisualizationImmunocytochemistry with mitochondrial markersDirect detection without secondary antibody incubation steps
Metabolic Enzyme Complex AnalysisEnzyme activity assays with immunoquantificationCorrelation of protein levels with functional activity
Biotin-Dependent Carboxylase ProfilingMultiplex immunoassaysSimultaneous detection of multiple carboxylases
Propionate Metabolism DisordersPatient sample analysisHigh sensitivity detection of residual protein
Drug Discovery ScreeningHigh-content imagingQuantitative readout of protein stabilization or induction

What emerging technologies might enhance the application of PCCB Antibody, HRP conjugated in research?

The integration of PCCB Antibody, HRP conjugated with emerging technologies presents exciting opportunities for advancing research in metabolic disorders and mitochondrial function. Several promising technological frontiers merit exploration:

Single-Cell Proteomics:

  • Adapting PCCB Antibody-HRP for microfluidic single-cell western blotting

  • Integration with mass cytometry (CyTOF) platforms using metal-tagged antibodies

  • Development of highly sensitive flow cytometry applications for intracellular PCCB detection

Advanced Conjugation Chemistries:

  • Site-specific conjugation methods to control HRP attachment location on antibodies

  • Exploration of enzyme alternatives with superior properties (thermostability, pH tolerance)

  • Development of bifunctional conjugates combining HRP with fluorescent reporters for dual readout capabilities

Microfluidic and Lab-on-a-Chip Platforms:

  • Miniaturized immunoassay systems requiring minimal sample volumes

  • Automated, high-throughput screening platforms for metabolic disorder diagnostics

  • Integration with organ-on-chip systems to study PCCB function in tissue-specific contexts

Computational and AI-Assisted Analysis:

  • Machine learning algorithms for automated quantification of immunohistochemical staining

  • Integration of image analysis with multi-omics data for systems biology approaches

  • Predictive modeling of PCCB interactions based on structural data and immunoassay results

Nanobody and Alternative Binding Protein Technologies:

  • Development of HRP-conjugated nanobodies against PCCB for improved tissue penetration

  • Creation of synthetic binding proteins with tailored specificity for PCCB epitopes

  • Aptamer-based detection systems as alternatives to traditional antibodies

The enhanced sensitivity achieved through lyophilization during conjugation provides an excellent foundation for these technological advances, offering approximately 200-fold improvement in dilution capacity compared to traditional conjugation methods. This sensitivity enhancement will be particularly valuable for applications requiring detection of low-abundance PCCB or when sample material is limited, such as in pediatric patients with propionyl-CoA carboxylase deficiency disorders.

How might the knowledge gained from PCCB research translate to therapeutic approaches?

Research utilizing PCCB Antibody, HRP conjugated contributes valuable insights that can potentially translate into therapeutic strategies for patients with propionyl-CoA carboxylase deficiency and related disorders. Several promising translational pathways are emerging:

Protein Stabilization Approaches:

  • Identification of small molecules that stabilize mutant PCCB protein

  • Development of pharmacological chaperones that promote proper folding

  • Screening for compounds that enhance residual enzymatic activity

Gene Therapy Strategies:

  • Monitoring PCCB expression following gene therapy interventions

  • Evaluating tissue-specific transduction efficiency

  • Quantifying long-term persistence of therapeutic gene expression

Enzyme Replacement Approaches:

  • Tracking distribution and cellular uptake of recombinant PCCB

  • Optimizing enzyme formulations for enhanced tissue delivery

  • Monitoring immune responses to therapeutic enzymes

Metabolic Bypass Strategies:

  • Identifying alternate metabolic pathways that can compensate for PCCB deficiency

  • Evaluating the effects of nutritional interventions on PCCB expression

  • Measuring changes in propionate metabolism with various therapeutic approaches

Biomarker Development:

  • Correlating PCCB protein levels with disease severity and progression

  • Identifying predictive markers for treatment response

  • Developing minimally invasive monitoring approaches

The high sensitivity of PCCB Antibody, HRP conjugated prepared through lyophilization-enhanced methods provides the necessary detection capability to monitor subtle changes in PCCB expression or localization following therapeutic interventions. This enhanced sensitivity facilitates the development of personalized medicine approaches where treatment efficacy can be monitored at the molecular level.

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