What Is CHCHD2 and Why Does It Matter?

CHCHD2 (Coiled-Coil-Helix-Coiled-Coil-Helix Domain Containing 2) is a nuclear-encoded mitochondrial protein belonging to the CHCH domain protein superfamily. It localizes primarily to the mitochondrial intermembrane space, where it plays roles in maintaining mitochondrial integrity and supporting oxidative phosphorylation. CHCHD2 has been identified as an oxygen-responsive transcriptional regulator, modulating the expression of cytochrome c oxidase subunits under low-oxygen conditions.

The protein has attracted significant research interest due to its genetic association with familial and sporadic Parkinson's disease. Mutations in the CHCHD2 gene have been reported in affected individuals, positioning CHCHD2 as a key molecular target for understanding mitochondria-driven neurodegeneration. Research using recombinant CHCHD2 protein enables detailed mechanistic studies of its structure, binding partners, and pathological variants.

Protein Properties and Formulation Guidelines

Recombinant Human CHCHD2 Protein (rp367812) is produced using recombinant expression technology to deliver a high-purity protein suitable for a range of in vitro applications. Researchers should consult the product datasheet for confirmed specifications including molecular weight, purity grade, expression system, buffer composition, and storage recommendations, as these parameters are critical for experimental design.

General best practices for recombinant proteins of this class include:

• Storage: Aliquot upon receipt and store at −80 °C to minimize freeze-thaw cycles. Avoid repeated freeze-thaw.
• Reconstitution: Follow the datasheet instructions precisely; use the recommended buffer for reconstitution to preserve protein activity.
• Concentration verification: Measure protein concentration by BCA or Bradford assay upon reconstitution before use in downstream experiments.
• Handling: Work on ice and keep exposure to room temperature minimal to maintain protein stability.

Research Applications of Recombinant CHCHD2

Recombinant Human CHCHD2 Protein is suited for multiple research applications in cell biology and biochemistry:

• Protein–protein interaction studies: CHCHD2 interacts with partners such as CHCHD10 within the mitochondrial intermembrane space. Pull-down assays and co-immunoprecipitation experiments with recombinant protein can map these interaction interfaces.
• Antibody validation: Recombinant CHCHD2 serves as a positive control antigen in Western blotting, ELISA, and immunoprecipitation to confirm antibody specificity.
• Enzymatic and binding assays: In vitro assays to study CHCHD2's role in respiratory chain function or its interactions with cytochrome c oxidase subunits.
• Structural studies: High-purity recombinant protein can support biophysical characterization such as circular dichroism (CD) spectroscopy or differential scanning fluorimetry (DSF).
• Disease modeling: Recombinant wild-type and mutant CHCHD2 proteins can be used to study molecular mechanisms underlying Parkinson's disease-associated mutations.

Quality, Safety, and Regulatory Considerations

Aladdin Scientific's Recombinant Human CHCHD2 Protein (rp367812) is manufactured for research use only (RUO) and is not intended for diagnostic, therapeutic, or clinical applications. Researchers should observe the following:

• Purity and QC: Each lot is subject to quality control testing. Refer to the Certificate of Analysis (CoA) supplied with each shipment for lot-specific purity, concentration, and activity data.
• Biosafety: Handle recombinant human proteins according to institutional biosafety guidelines. Although CHCHD2 itself is not classified as a biohazard, standard laboratory precautions (gloves, lab coat, eye protection) should be observed.
• Expiry and stability: Observe the expiry date on the product label. Degraded or aggregated protein may yield unreliable experimental results.
• Documentation: Retain the CoA and Safety Data Sheet (SDS) for compliance and audit purposes.