TRIM3 Antibody, HRP conjugated

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Description

TRIM3 Antibody and HRP Conjugation Overview

TRIM3 Antibody Properties

ParameterDetails
Host/IsotypeRabbit polyclonal (e.g., 28392-1-AP, ABIN2775959)
ReactivityHuman, mouse, rat; some cross-reactivity with cow, dog, zebrafish
ApplicationsWB, IHC, ELISA, co-immunoprecipitation (CoIP)
ImmunogenSynthetic peptides targeting N-terminal regions or internal domains
Molecular Weight75–85 kDa (observed); 81 kDa (calculated)

HRP Conjugation

  • Purpose: Enables colorimetric or chemiluminescent detection via substrates like DAB, TMB, or ECL.

  • Method: Kits (e.g., Lightning-Link®) covalently link HRP to lysine residues on the antibody .

  • Advantages: Direct conjugation avoids cross-reactivity with secondary antibodies .

Detection Methods

ApplicationProtocol Highlights
Western BlotPrimary antibody dilution: 1:1000–1:6000 ; detects 75–85 kDa TRIM3 bands
IHCDilution: 1:250–1:1000; requires antigen retrieval (TE buffer pH 9.0 or citrate pH 6.0)
ELISAUsed in cytokine detection (e.g., IL-1β, IL-6, TNF-α)

Key Research Findings

Study FocusFindings
Immune RegulationTRIM3 degrades TLR3 via K48-linked ubiquitination, reducing cytokine storms in Dabie bandavirus infection .
Cancer BiologyTRIM3 promotes P53 degradation, inhibiting apoptosis in breast cancer .
NeurodegenerationTRIM3 upregulation attenuates apoptosis in Parkinson’s disease via PI3K/AKT signaling .

Conjugation Considerations

FactorImpact on Conjugation
Buffer AdditivesSodium azide, BSA, or detergents may inhibit HRP labeling
pH/TemperatureOptimal conjugation at pH 7–9; avoid freezing during storage
ValidationConfirm conjugation efficiency via HRP activity assays

Antibody Validation Data

Antibody CatalogHostReactivityObserved MWApplications
28392-1-APRabbitHuman, mouse, rat75–85 kDaWB, IHC, ELISA
ABIN2775959RabbitHuman, mouse, rat81 kDaWB, IHC
ab111840RabbitHuman, mouse75–85 kDaWB

Challenges and Considerations

  1. Conjugation Efficiency: Varies with antibody isotype and buffer composition .

  2. Cross-reactivity: Direct HRP conjugation minimizes nonspecific binding compared to secondary antibodies .

  3. Storage: HRP-conjugated antibodies require -20°C storage to preserve enzymatic 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 after receiving it. Delivery time may vary depending on the purchasing method and location. For specific delivery information, please contact your local distributor.
Synonyms
BERP antibody; Brain expressed ring finger antibody; Brain-expressed RING finger protein antibody; FLJ16135 antibody; HAC1 antibody; RING finger protein 22 antibody; RING finger protein 97 antibody; RNF22 antibody; RNF97 antibody; Trim3 antibody; TRIM3_HUMAN antibody; Tripartite motif containing 3 antibody; Tripartite motif protein TRIM3 antibody; Tripartite motif-containing protein 3 antibody
Target Names
TRIM3
Uniprot No.

Target Background

Function
TRIM3 is likely involved in vesicular trafficking through its association with the CART complex. The CART complex is essential for efficient transferrin receptor recycling, but not for EGFR degradation. TRIM3 positively regulates the motility of the microtubule-dependent motor protein KIF21B.
Gene References Into Functions
  1. TRIM3 plays a tumor-suppressing role in regulating liver cancer development by reducing cell proliferation through cell cycle arrest at the G0/G1 phase. PMID: 28950898
  2. Quantitative real-time RT-PCR and western blotting analysis revealed significantly low TRIM3 expression in five cervical cancer cell lines. TRIM3 overexpression weakened cell viability, induced apoptosis in C-33A and SiHa cells in vitro, and inhibited tumor growth in vivo. These findings suggest that TRIM3 can reduce the proliferation of cervical cancer cells. PMID: 29524410
  3. TRIM3 exhibits an anti-proliferative role in rheumatoid arthritis fibroblast-like synoviocytes via the p38 signaling pathway. PMID: 28259936
  4. Research findings support a novel role for Brat/TRIM3 in maintaining stem cell equilibrium and suppressing tumor growth by regulating NICD nuclear transport. PMID: 26893479
  5. TRIM3 functions as a tumor suppressor in colorectal cancer progression. This tumor-suppressive function is partly exerted through the regulation of the p53 protein. PMID: 26691157
  6. Studies indicate that most-studied TRIpartite Motif (TRIM)-NHL proteins, including TRIM2, TRIM3, TRIM32, and TRIM71, and their mutations have been linked to diseases. PMID: 26514622
  7. TRIM3 may play a significant role in hepatocellular carcinoma progression. TRIM3 is downregulated in hepatocellular carcinoma at both the mRNA and protein levels, and low TRIM3 expression is correlated with an unfavorable prognosis. PMID: 24994609
  8. TRIM3 acts as a tumor suppressor in glioblastoma multiforme (GBM) by restoring asymmetric cell division. PMID: 24947043
  9. Data indicate that TRIM3 and p21 interact in cells. PMID: 23318451
  10. TRIM63 is a candidate gene mediating the glucocorticoid-induced promotion of osteoblastic differentiation. PMID: 20173306
  11. Brain-expressed RING finger protein (BERP) is a gene whose expression is up-regulated in a p53-dependent manner. PMID: 20543135
  12. The endosome-associated protein hrs is a subunit of a protein complex containing actinin-4, BERP, and myosin V that is necessary for efficient TfR recycling but not for EGFR degradation. PMID: 15772161
  13. Loss of heterozygosity of chromosome segment 11p15.5 in malignant gliomas suggests TRIM3 as a candidate brain tumor suppressor gene. PMID: 19250537

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Database Links

HGNC: 10064

OMIM: 605493

KEGG: hsa:10612

STRING: 9606.ENSP00000340797

UniGene: Hs.591992

Protein Families
TRIM/RBCC family
Subcellular Location
Cytoplasm. Early endosome. Golgi apparatus, trans-Golgi network. Cell projection, dendrite.
Tissue Specificity
Expressed in brain, heart, uterus and testis.

Q&A

What is TRIM3 and what are its key biological functions?

TRIM3 (Tripartite Motif Containing 3) is a protein involved in several important neurological processes. Research indicates that TRIM3 plays a significant role in vesicular trafficking through its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for EGFR degradation . Additionally, TRIM3 positively regulates the motility of microtubule-dependent motor protein KIF21B . Recent studies have revealed that TRIM3 may have neuroprotective functions, particularly in Parkinson's disease models, where it attenuates apoptosis via activation of the PI3K/AKT signaling pathway .

What epitope does the TRIM3 Antibody, HRP conjugated recognize?

The TRIM3 Antibody, HRP conjugated (polyclonal) specifically targets the amino acid region 285-487 of the human TRIM3 protein . This antibody was raised against a recombinant human tripartite motif-containing protein 3 immunogen spanning this region . Understanding this specific binding region is critical for experimental design as it determines which domains of the target protein will be recognized during your assays.

What is the significance of HRP conjugation in this antibody?

The horseradish peroxidase (HRP) conjugation provides a direct enzymatic tag that facilitates detection in various immunoassays without the need for secondary antibodies . When exposed to appropriate substrates, HRP produces colorimetric, chemiluminescent, or fluorescent signals depending on the detection system used. This direct conjugation can reduce background, eliminate cross-reactivity issues associated with secondary antibodies, and streamline protocols by reducing incubation steps and washing procedures in experiments like ELISA .

What are the validated applications for TRIM3 Antibody, HRP conjugated?

Based on the available data, this TRIM3 antibody with HRP conjugation has been primarily validated for ELISA applications . While unconjugated versions of TRIM3 antibodies have been used in Western blotting, immunohistochemistry, and immunofluorescence, researchers should validate this specific HRP-conjugated variant before proceeding with applications beyond ELISA. When designing experiments, it is advisable to include appropriate positive and negative controls to ensure specificity and sensitivity in your specific experimental system.

What is the recommended protocol for using TRIM3 Antibody, HRP conjugated in ELISA?

While optimal protocols should be determined by each laboratory for their specific experimental conditions, a general guideline for using TRIM3 Antibody, HRP conjugated in ELISA would include:

  • Coat plates with the target antigen (recombinant TRIM3 or tissue/cell lysates containing TRIM3)

  • Block with appropriate blocking buffer (typically 1-5% BSA or non-fat milk in PBS)

  • Add diluted TRIM3 Antibody, HRP conjugated (optimal dilutions must be determined empirically)

  • Incubate according to optimized time and temperature (typically 1-2 hours at room temperature or overnight at 4°C)

  • Wash thoroughly to remove unbound antibody

  • Add appropriate HRP substrate (TMB, ABTS, or chemiluminescent substrates)

  • Measure the signal using appropriate detection methods

It is critical to include both positive and negative controls in your experimental design to validate results .

How should the TRIM3 Antibody, HRP conjugated be stored to maintain optimal activity?

For optimal long-term stability, the TRIM3 Antibody, HRP conjugated should be aliquoted and stored at -20°C . Research has shown that HRP conjugates are sensitive to light and repeated freeze/thaw cycles, which can significantly degrade enzymatic activity . Therefore, it is recommended to:

  • Divide the antibody into small working aliquots immediately upon receipt

  • Store aliquots at -20°C in the dark

  • Avoid repeated freeze/thaw cycles (more than 2-3 cycles can significantly reduce activity)

  • Protect from prolonged exposure to light during storage and use

  • When working with the antibody, keep it on ice and use within the same day once thawed

How can TRIM3 Antibody, HRP conjugated be used to study TRIM3's role in Parkinson's disease models?

Recent research has identified TRIM3 as a potential therapeutic target in Parkinson's disease (PD) due to its neuroprotective effects . When studying PD models, TRIM3 Antibody, HRP conjugated can be utilized to:

  • Quantify TRIM3 expression levels in patient samples or experimental PD models using ELISA

  • Evaluate changes in TRIM3 expression following therapeutic interventions

  • Monitor TRIM3 levels in response to oxidative stress conditions relevant to PD

  • Assess the correlation between TRIM3 levels and markers of apoptosis or oxidative stress

Research has demonstrated that TRIM3 expression is decreased in the venous blood of PD patients and in PD mouse models . TRIM3 up-regulation has been shown to reduce apoptosis in midbrain tissues, increase GSH and SOD levels, reduce ROS, and enhance PD cell viability through activation of the PI3K/AKT signaling pathway .

How can the TRIM3 Antibody be used to investigate the relationship between TRIM3 and the PI3K/AKT pathway?

The TRIM3 Antibody, HRP conjugated can be instrumental in elucidating the mechanistic relationship between TRIM3 and the PI3K/AKT signaling pathway. Studies have shown that TRIM3 up-regulation increases p-PI3K/PI3K and p-AKT/AKT ratios, suggesting direct activation of this pathway . Researchers can design experiments to:

  • Use ELISA to quantify TRIM3 levels alongside PI3K/AKT pathway components

  • Employ the antibody in combination with PI3K inhibitors (like LY294002) to analyze pathway dependency

  • Design time-course experiments to determine the temporal relationship between TRIM3 expression and PI3K/AKT activation

  • Create experimental models with varying TRIM3 expression levels to establish dose-dependent effects on PI3K/AKT signaling

This approach can help resolve whether TRIM3 directly activates the PI3K/AKT pathway or if intermediate signaling molecules are involved .

What considerations should be made when using this antibody to study TRIM3's effects on oxidative stress markers?

When investigating TRIM3's relationship with oxidative stress using this antibody, researchers should consider:

  • The timing of TRIM3 detection relative to oxidative stress induction is critical, as transient changes may be missed

  • Complementary assays should be performed to measure GSH, SOD levels, and ROS production alongside TRIM3 quantification

  • Cell-type specific differences in TRIM3 expression and response to oxidative stress should be accounted for

  • The potential interaction between TRIM3 and other antioxidant response elements must be considered

Research has shown that TRIM3 up-regulation increases GSH and SOD levels while reducing ROS in PD models, suggesting an important role in cellular antioxidant defense mechanisms .

What are potential causes of inconsistent results when using TRIM3 Antibody, HRP conjugated?

Inconsistent results when using TRIM3 Antibody, HRP conjugated may stem from several experimental factors:

  • Antibody degradation due to improper storage (exposure to light, repeated freeze/thaw cycles)

  • Suboptimal antibody dilution for the specific application

  • Insufficient blocking leading to high background

  • Sample-to-sample variation in TRIM3 expression levels

  • Cross-reactivity with structurally similar proteins (other TRIM family members)

  • Interference from buffer components or contaminants

To address these issues, researchers should carefully optimize experimental conditions, use freshly prepared reagents, include appropriate controls, and ensure consistent sample preparation procedures .

How can researchers validate the specificity of the TRIM3 Antibody, HRP conjugated?

To ensure the specificity of the TRIM3 Antibody, HRP conjugated, researchers should implement multiple validation strategies:

  • Use recombinant TRIM3 protein as a positive control

  • Include samples with TRIM3 knockdown or knockout as negative controls

  • Compare results with alternative TRIM3 antibodies targeting different epitopes

  • Perform pre-absorption tests with the immunizing peptide

  • Validate across multiple experimental models where TRIM3 expression is well-characterized

  • Compare the molecular weight and expression pattern with published literature

These validation steps are essential for confirming that the observed signals are specifically attributable to TRIM3 rather than non-specific binding or cross-reactivity .

How should researchers interpret changes in TRIM3 levels in disease models?

When interpreting changes in TRIM3 levels detected using this antibody in disease models, researchers should consider:

  • The contextual significance of TRIM3 in the specific disease being studied

  • Whether changes in TRIM3 are a cause or consequence of the disease process

  • The relationship between TRIM3 and other disease markers or pathways

  • Cell-type specific expression patterns of TRIM3

  • Potential post-translational modifications that might affect antibody binding without changing actual protein abundance

What controls should be included when using TRIM3 Antibody, HRP conjugated in neurodegeneration research?

When designing experiments to study TRIM3 in neurodegeneration using this antibody, researchers should include:

  • Positive controls: Samples with known TRIM3 expression (e.g., recombinant TRIM3 protein, cell lines with validated TRIM3 expression)

  • Negative controls: Samples with TRIM3 knockdown/knockout or pre-immune serum controls

  • Disease model validation: Confirm the neurodegeneration model by established markers (e.g., TH+ neuron loss in PD models)

  • Treatment controls: Include appropriate vehicle controls for any interventions

  • Pathway validation controls: When studying signaling pathways like PI3K/AKT, include pathway inhibitors (e.g., LY294002) to confirm specificity

  • Technical replicates: Multiple measurements to account for assay variability

  • Biological replicates: Multiple independent samples to account for biological variation

This comprehensive control strategy ensures robust and reproducible research findings when investigating TRIM3's role in neurodegenerative processes .

How can researchers effectively combine TRIM3 antibody-based detection with functional assays?

To gain deeper insights into TRIM3 biology, researchers can design integrated experimental approaches that combine antibody-based detection with functional assays:

  • Correlative studies: Measure TRIM3 levels using the antibody in ELISA, then analyze the same samples for functional parameters (e.g., cell viability, apoptosis markers)

  • Intervention studies: Modulate TRIM3 levels (overexpression or knockdown) and use the antibody to confirm TRIM3 changes while measuring functional outcomes

  • Temporal studies: Track TRIM3 levels over time alongside functional readouts to establish cause-effect relationships

  • Dose-response studies: Create gradients of TRIM3 expression and measure corresponding functional responses

  • Pathway inhibition: Combine TRIM3 detection with inhibitors of related pathways (e.g., PI3K/AKT) to dissect mechanistic relationships

This integrated approach provides more comprehensive insights than antibody-based detection alone, establishing not just correlative but potentially causal relationships between TRIM3 and cellular functions .

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