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 .
| Antibody Catalog | Host | Reactivity | Observed MW | Applications |
|---|---|---|---|---|
| 28392-1-AP | Rabbit | Human, mouse, rat | 75–85 kDa | WB, IHC, ELISA |
| ABIN2775959 | Rabbit | Human, mouse, rat | 81 kDa | WB, IHC |
| ab111840 | Rabbit | Human, mouse | 75–85 kDa | WB |
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 .
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.
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 .
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.
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 .
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
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 .
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 .
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 .
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 .
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 .
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
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 .
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 .