Western Blot (WB)
(Western blot analysis of Complement C4A/B expression in A549 (A); Raw264.7 (B); PC12 (C) whole cell lysates.)
Rabbit C4A Polyclonal Antibody | anti-C4A antibody
C4A Antibody
Western Blot (WB)
(Western blot analysis of Complement C4A/B expression in A549 (A); Raw264.7 (B); PC12 (C) whole cell lysates.)
Western Blot (WB)
(Western blot analysis of Complement C4A/B expression in A549 (A); Raw264.7 (B); PC12 (C) whole cell lysates.)
NCBI and Uniprot Product Information
NCBI Description
This gene encodes the acidic form of complement factor 4, part of the classical activation pathway. The protein is expressed as a single chain precursor which is proteolytically cleaved into a trimer of alpha, beta, and gamma chains prior to secretion. The trimer provides a surface for interaction between the antigen-antibody complex and other complement components. The alpha chain is cleaved to release C4 anaphylatoxin, an antimicrobial peptide and a mediator of local inflammation. Deficiency of this protein is associated with systemic lupus erythematosus and type I diabetes mellitus. This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. Varying haplotypes of this gene cluster exist, such that individuals may have 1, 2, or 3 copies of this gene. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2014]
Uniprot Description
C4A: C4 plays a central role in the activation of the classical pathway of the complement system. It is processed by activated C1 which removes from the alpha chain the C4a anaphylatoxin. The remaining alpha chain fragment C4b is the major activation product and is an essential subunit of the C3 convertase (C4b2a) and the C5 convertase (C3bC4b2a) enzymes of the classical complement pathway. Defects in C4A are the cause of complement component 4A deficiency (C4AD). A rare defect of the complement classical pathway associated with the development of autoimmune disorders, mainly systemic lupus with or without associated glomerulonephritis. Defects in C4A are a cause of susceptibility to systemic lupus erythematosus (SLE). A chronic, inflammatory and often febrile multisystemic disorder of connective tissue. It affects principally the skin, joints, kidneys and serosal membranes. It is thought to represent a failure of the regulatory mechanisms of the autoimmune system. Interindividual copy- number variation (CNV) of complement component C4 and associated polymorphisms result in different susceptibilities to SLE. The risk of SLE susceptibility has been shown to be significantly increased among subjects with only two copies of total C4. A high copy number is a protective factor against SLE.
Protein type: Secreted, signal peptide; Inhibitor; Secreted
Chromosomal Location of Human Ortholog: 6p21.3
Cellular Component: plasma membrane; extracellular region
Molecular Function: complement component C1q binding; endopeptidase inhibitor activity
Biological Process: regulation of complement activation; innate immune response; inflammatory response; complement activation, classical pathway; complement activation
Disease: Complement Component 4a Deficiency; Blood Group, Chido/rodgers System
Research Articles on C4A
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Product Notes
The C4A c4a (Catalog #AAA5316039) is an Antibody produced from Rabbit and is intended for research purposes only. The product is available for immediate purchase. AAA Biotech's C4A can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB). WB: 1:500-1:1000. Researchers should empirically determine the suitability of the C4A c4a for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "C4A, Polyclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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