BCAP31 Antibody

Code CSB-PA03425A0Rb
Size US$166
  • Western Blot
    Positive WB detected in: 293 whole cell lysate, Hela whole cell lysate, MCF-7 whole cell lysate, SH-SY5Y whole cell lysate, Rat lung tissue, Rat brain tissue, Mouse lung tissue, Mouse brain tissue
    All lanes: BCAP31 antibody at 4.8µg/ml
    Goat polyclonal to rabbit IgG at 1/50000 dilution
    Predicted band size: 28, 35 kDa
    Observed band size: 28 kDa

  • IHC image of CSB-PA03425A0Rb diluted at 1:1200 and staining in paraffin-embedded human colon cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.

  • IHC image of CSB-PA03425A0Rb diluted at 1:1200 and staining in paraffin-embedded human prostate cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.

  • Immunofluorescence staining of Hela cells with CSB-PA03425A0Rb at 1:400, counter-stained with DAPI. The cells were fixed in 4% formaldehyde, permeabilized using 0.2% Triton X-100 and blocked in 10% normal Goat Serum. The cells were then incubated with the antibody overnight at 4°C. The secondary antibody was Alexa Fluor 488-congugated AffiniPure Goat Anti-Rabbit IgG(H+L).

  • Immunoprecipitating BCAP31 in Mouse liver tissue
    Lane 1: Rabbit control IgG (1µg) instead of CSB-PA03425A0Rb in Mouse liver tissue. For western blotting, a HRP-conjugated Protein G antibody was used as the secondary antibody (1/2000)
    Lane 2: CSB-PA03425A0Rb (6µg) + Mouse liver tissue (500µg)
    Lane 3: Mouse liver tissue (10µg)

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Product Details

Full Product Name
Rabbit anti-Homo sapiens (Human) BCAP31 Polyclonal antibody
Uniprot No.
Target Names
Alternative Names
6C6 AG antibody; 6C6 AG tumor associated antigen antibody; 6C6-AG tumor-associated antigen antibody; 6C6AG antibody; 6C6AG tumor associated antigen antibody; Accessory protein BAP 31 antibody; Accessory protein BAP31 antibody; B cell receptor associated protein 31 antibody; B-cell receptor-associated protein 31 antibody; BA31 antibody; BAP 31 antibody; Bap31 antibody; BAP31_HUMAN antibody; BCAP 31 antibody; BCAP31 antibody; BCR associated protein Bap 31 antibody; BCR associated protein Bap31 antibody; BCR-associated protein 31 antibody; CDM antibody; CDM protein antibody; DXS1357E antibody; MS950 antibody; p28 antibody; p28 Bap31 antibody; Protein CDM antibody; RP23-329M9.5 antibody
Raised in
Species Reactivity
Human, Mouse, Rat
Recombinant Human B-cell receptor-associated protein 31 protein (2-243AA)
Immunogen Species
Homo sapiens (Human)

The BCAP31 Antibody (Product code: CSB-PA03425A0Rb) is Non-conjugated. For BCAP31 Antibody with conjugates, please check the following table.

Available Conjugates
Conjugate Product Code Product Name Application
HRP CSB-PA03425B0Rb BCAP31 Antibody, HRP conjugated ELISA
FITC CSB-PA03425C0Rb BCAP31 Antibody, FITC conjugated
Biotin CSB-PA03425D0Rb BCAP31 Antibody, Biotin conjugated ELISA
Purification Method
>95%, Protein G purified
It differs from different batches. Please contact us to confirm it.
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, PH 7.4
Tested Applications
Recommended Dilution
Application Recommended Dilution
WB 1:1000-1:5000
IHC 1:1000-1:2000
IF 1:200-1:500
IP 1:200-1:2000
Troubleshooting and FAQs
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

Functions as a chaperone protein. Is one of the most abundant endoplasmic reticulum (ER) proteins. Plays a role in the export of secreted proteins in the ER, the recognition of abnormally folded protein and their targeting to the ER associated-degradation (ERAD). Also serves as a cargo receptor for the export of transmembrane proteins. Plays a role in the assembly of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) by stimulating the translocation of NDUFS4 and NDUFB11 from the cytosol to the mitochondria via interaction with TOMM40. In response to ER stress, delocalizes from the ER-mitochondria contact sites and binds BCL2. May be involved in CASP8-mediated apoptosis.
Gene References into Functions
  1. that BAP31 is a potential prognostic marker for colorectal cancer patients after surgery PMID: 29653744
  2. BAP31 expression is an independent prognostic factor for overall survival of patients with postoperative hepatocellular carcinoma (HCC), and low expression levels of BAP31 in HCC may indicate poor outcomes of HCC patient after surgical resection. PMID: 25980696
  3. results suggest that enhanced expression of csBAP31 contributes to poor survival of NSCLC cells PMID: 29145450
  4. This patient's clinical features, muscle histopathology, brain MRI features, and family history were suggestive of mitochondrial encephalopathy. Whole exome sequencing research study confirmed the diagnosis of BCAP31-associated encephalopathy, DDCH syndrome. PMID: 28332767
  5. Data characterized the biochemical properties of plant orthologs of human B-cell receptor-associated protein BAP31 (HsBAP31) termed 'plant BAP-like proteins' (PBL proteins). PMID: 27770627
  6. Data show that tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-induced endoplasmic reticulum (ER) stress was triggered by caspase-8-mediated cleavage of B cell receptor-associated protein 31 (BAP31). PMID: 26212606
  7. The C-terminal domain of BAP31 is exposed on the cell surface of human embryonic stem cells. PMID: 26102500
  8. both BCAP31 and ABCD1 were associated with hepatic cholestasis and death before 1 year. Remarkably, a patient with an isolated deletion at the 3'-end of SLC6A8 had a similar severe phenotype as seen in BCAP31 deficiency PMID: 24597975
  9. Transfected human respiratory syncytial virus SH protein co-localizes with transfected BAP31 in cells, and pulls down endogenous BAP31. PMID: 25854864
  10. In the titel. PMID: 25044748
  11. These findings provide, for the first time, mechanistic insights into how BAP31 regulates human embryonic stem cell stemness and survival via control of EpCAM expression. PMID: 24898727
  12. Hypomethylation in BCAP31 is associated with breast cancer. PMID: 24395279
  13. the lack of BAP31 disturbs endoplasmic reticulum (ER) metabolism and impacts the Golgi apparatus, highlighting an important role for BAP31 in ER-to-Golgi crosstalk. PMID: 24011989
  14. BAP31 and BiP are essential for dislocation of SV40 from the endoplasmic reticulum to the cytosol. PMID: 21947079
  15. Membrane-Associated RING-CH proteins MARCH VIII and MARCH IV associate with Bap31 and target CD81 and CD44 to lysosomes PMID: 21151997
  16. Fis1 and Bap31 bridge the mitochondria-ER interface to establish a platform for apoptosis induction. PMID: 21183955
  17. Contiguous deletion of the X-linked adrenoleukodystrophy gene (ABCD1) and DXS1357E: a novel neonatal phenotype similar to peroxisomal biogenesis disorders. PMID: 11992258
  18. CASP8 cleavage product of BAP31 induces mitochondrial fission through endoplasmic reticulum calcium signals, enhancing cytochrome c release to the cytosol. PMID: 12668660
  19. Data describe a novel human member of the protein tyrosine phosphatase-like B (PTPLB) family, an integral protein of the endoplasmic reticulum membrane, as a BAP31-interacting protein. PMID: 15024066
  20. Cleavage of BAP31 leads to the generation of ER- localized, proapoptotic BAP20, which may mediate mitochondrion-ER cross talk through a Ca(2+)-dependent mechanism PMID: 15254227
  21. BAP31 may play a role in regulating intracellular trafficking of CD11b/CD18 in neutrophils PMID: 15294914
  22. We have characterized a molecular mechanism by which calnexin regulates ER-stress-mediated apoptosis in a manner independent of its chaperone functions but dependent of its binding to Bap31. PMID: 16858427
  23. Bap31 performs quality control on class I molecules in two distinct phases: by exporting peptide-loaded class I molecules to the ER/Golgi, and by retrieving class I molecules that have lost peptides in the acidic post-ER environment. PMID: 17056546
  24. Bap31 is a component of the endoplasmic reticulum (ER) quality control compartment and that it moves between the peripheral ER and a juxtanuclear ER or ER-related compartment distinct from the conventional ER-Golgi intermediate compartment. PMID: 18287538
  25. BAP31 associates with the N terminus of one of its newly synthesized client proteins, the DeltaF508 mutant of CFTR, and promotes its retrotranslocation from the endoplasmic reticulum and degradation by the cytoplasmic 26S proteasome system. PMID: 18555783
  26. Results identify B-cell-associated protein 31 as a novel binding partner of the high-risk human papillomavirus 16 E5 proteins and provide insight into how the E5 proteins may modulate the life cycle in differentiating cells. PMID: 18684816

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Involvement in disease
Deafness, dystonia, and cerebral hypomyelination (DDCH)
Subcellular Location
Endoplasmic reticulum membrane; Multi-pass membrane protein. Endoplasmic reticulum-Golgi intermediate compartment membrane; Multi-pass membrane protein.
Protein Families
BCAP29/BCAP31 family
Tissue Specificity
Ubiquitous. Highly expressed in neurons and discrete endocrine cells.
Database Links

HGNC: 16695

OMIM: 300398

KEGG: hsa:10134

STRING: 9606.ENSP00000392330

UniGene: Hs.522817

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