COPB2 Biology and Role in COPI-Mediated Transport

COPB2, also designated beta-prime-COP (β'-COP), is an integral component of the coatomer protein complex I (COPI). The COPI complex is a heptameric coat assembly composed of alpha-, beta-, beta'-, gamma-, delta-, epsilon-, and zeta-COP subunits that collectively drive the formation and budding of vesicles from the Golgi apparatus and the cis-Golgi network. These vesicles predominantly mediate retrograde cargo transport back to the endoplasmic reticulum (ER), retrieving escaped ER-resident proteins and recycling membrane components.

COPB2 occupies a structural role within the outer layer of the coatomer, contributing to cargo recognition and vesicle coat polymerization. Dysregulation or mutation of COPB2 has been associated with defects in Golgi morphology, impaired secretory pathway fidelity, and has been implicated in certain disease contexts including neurological disorders and cancer cell proliferation studies. Understanding COPB2 function and expression levels therefore has broad relevance across cell biology, developmental biology, and translational research.

Product Overview: COPB2 Mouse mAb (Ab348625)

Aladdin Scientific offers COPB2 Mouse mAb under SKU Ab348625, sourced through absea (reference KC-44530). As a monoclonal antibody generated in mouse, this reagent provides high specificity and batch-to-batch reproducibility for detection of the COPB2 protein. Monoclonal antibodies are generated from a single B-cell clone, ensuring a defined and consistent epitope recognition profile—a critical advantage when results must be compared across experiments or laboratories.

Researchers should consult the product datasheet for complete specifications including host species confirmation, clonality, immunogen details, validated species reactivity, recommended working dilutions, and storage conditions. These parameters are essential for experimental design and ensuring regulatory or publication-grade data quality.

Note: Full technical specifications, validated applications, and lot-specific data are available on the Ab348625 product page. Users are encouraged to verify the latest datasheet prior to use.

Recommended Applications and Experimental Considerations

Monoclonal antibodies targeting COPB2 are commonly employed in a range of standard immunological and cell biology techniques. Typical applications for anti-COPB2 antibodies of this class include:

• Western Blotting (WB): Detection of endogenous COPB2 protein in cell or tissue lysates. COPB2 has a predicted molecular weight of approximately 102 kDa; confirmation of a band at the expected size is recommended as a positive control criterion.
• Immunofluorescence (IF) / Immunocytochemistry (ICC): Visualization of COPB2 localization at the Golgi apparatus in cultured cells, supporting studies of organelle morphology and trafficking dynamics.
• Immunoprecipitation (IP): Isolation of COPB2 and associated coatomer complex members for co-immunoprecipitation studies or proteomic analyses.
• Immunohistochemistry (IHC): Assessment of COPB2 expression in tissue sections, relevant to studies of disease-associated expression changes.

Researchers should perform titration experiments to determine optimal antibody concentrations for each assay type and sample matrix. Appropriate positive and negative controls are essential to validate specificity. Species cross-reactivity should be confirmed against the validated species listed on the product datasheet before use in non-human model systems.

Storage, Handling, and Quality Assurance

Proper storage and handling of monoclonal antibodies are critical to maintaining reagent integrity and experimental reproducibility. General best-practice guidelines for antibody storage include:

• Store at the temperature specified on the product datasheet (typically –20 °C for long-term storage or 4 °C for short-term use).
• Avoid repeated freeze-thaw cycles, which can cause aggregation and loss of activity. Aliquot the antibody upon first use if multiple freeze-thaw cycles are anticipated.
• Centrifuge briefly before opening to collect contents at the bottom of the vial.
• Keep the antibody solution away from light where applicable (e.g., if fluorophore-conjugated versions are used).

Aladdin Scientific sources Ab348625 from absea, a supplier with established quality control procedures. Lot-specific quality control data, including SDS-PAGE purity assessment and functional validation results, should be reviewed in the accompanying Certificate of Analysis (CoA). Contact Aladdin Scientific technical support for CoA requests or application-specific guidance.