C1QB Antibody

Code CSB-PA003638ESR1HU
Size US$166
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  • Immunohistochemistry of paraffin-embedded human kidney tissue using CSB-PA003638ESR1HU at dilution of 1:100

  • Immunohistochemistry of paraffin-embedded human skeletal muscle tissue using CSB-PA003638ESR1HU at dilution of 1:100

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Product Details

Full Product Name
Rabbit anti-Homo sapiens (Human) C1QB Polyclonal antibody
Uniprot No.
Target Names
Alternative Names
C1qb antibody; C1QB_HUMAN antibody; Complement C1q subcomponent subunit B antibody; Complement component 1 q subcomponent B chain antibody; Complement component 1 q subcomponent beta polypeptide antibody; Complement component C1q B chain antibody; Complement subcomponent C1q chain B antibody
Raised in
Species Reactivity
Recombinant Human Complement C1q subcomponent subunit B protein (104-253AA)
Immunogen Species
Homo sapiens (Human)
Purification Method
Antigen Affinity Purified
It differs from different batches. Please contact us to confirm it.
PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Tested Applications
Recommended Dilution
Application Recommended Dilution
IHC 1:20-1:200
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

C1q associates with the proenzymes C1r and C1s to yield C1, the first component of the serum complement system. The collagen-like regions of C1q interact with the Ca(2+)-dependent C1r(2)C1s(2) proenzyme complex, and efficient activation of C1 takes place on interaction of the globular heads of C1q with the Fc regions of IgG or IgM antibody present in immune complexes.
Gene References into Functions
  1. C1QB expression is significantly upregulated in human masticatory mucosa during wound healing PMID: 28005267
  2. We identified a major linear epitope of C1q that is the target of anti-C1q in systemic lupus erythematosus. PMID: 22740328
  3. The susceptibility for schizophrenia was particularly associated with C1QB rs291982 GG genotype. PMID: 21951915
  4. a 2-gene signature consisting of PLEK2 and C1QB led to the best result that correctly classified 93.3% melanoma patients and 90% healthy controls PMID: 21698244
  5. The C-terminal globular region of the C1Q B chain may have evolved as a functionally specialized domain or module with distinct binding properties which together with the A and C chains confers versatility and flexibility to the whole C1q molecule. PMID: 12847249
  6. Complementary interacting sites on the C1q globular domain have been precisely defined. Characterization of point mutants suggests a central role for Arg114 and a complementary role for Arg129, Arg163, and His117 of C1Q B chain in the C1q-IgG interaction. PMID: 15034050
  7. The first analysis of C1q by mass spectrometry yields evidence that the B chain moiety of the globular head is involved in the interaction with fucoidan and underscores the particular role of arginine-109 in the charge pattern recognition property of C1q. PMID: 15709773
  8. results suggest that charged residues belonging to the apex of the gC1q heterotrimer (with participation of all three chains) as well as the side of the ghB are crucial for C1q binding to ligands, IgG1, C-reactive protein, and pentraxin 3. PMID: 16566583
  9. No C1q or low molecular weight C1q was detected in sera and no anti-C1q autoantibodies were found. Sequencing of the C1q genes revealed a novel missense mutation (Gly-Arg) in codon 217 of the B chain. PMID: 17513176

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Involvement in disease
Complement component C1q deficiency (C1QD)
Subcellular Location
Database Links

HGNC: 1242

OMIM: 120570

KEGG: hsa:713

STRING: 9606.ENSP00000313967

UniGene: Hs.8986

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