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Complement component 4 (C4), in humans, is a protein involved in the intricate complement system, originating from the human leukocyte antigen (HLA) system. It serves a number of critical functions in immunity, tolerance, and autoimmunity with the other numerous components.
One can interpret the CH50 value along with the individual's complement factor values to help determine the etiology. For example, if and individual has normal C3/C4 values but a decreased CH50, that can indicate a terminal complement pathway deficiency while if one has low C3 and CH50 values that can indicate an autoimmune condition such as ...
Anaphylatoxins, or complement peptides, are fragments (C3a, C4a and C5a) that are produced as part of the activation of the complement system. [2] Complement components C3, C4 and C5 are large glycoproteins that have important functions in the immune response and host defense. [ 3 ]
12268 Ensembl ENSG00000244207 ENSG00000206340 ENSG00000244731 ENSG00000227746 ENSMUSG00000073418 UniProt P0C0L4 P01029 RefSeq (mRNA) NM_001252204 NM_007293 NM_009780 RefSeq (protein) NP_001239133 NP_009224 NP_033910 Location (UCSC) Chr 6: 31.98 – 32 Mb Chr 17: 34.95 – 34.96 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Complement C4-A is a kind of the Complement component 4 ...
Scheme of the complement system. The complement system, also known as complement cascade, is a part of the humoral, innate immune system and enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism, promote inflammation, and attack the pathogen's cell membrane. [1]
Complement is responsible for immune inflammatory response in adipose tissues which has been implicated in the development of obesity. [8] Obesity in turn results in an abnormally high level of complement activation via production of the C1 component of the classical pathway, which can lead to tissue inflammation and eventually insulin ...
C4b-binding protein (C4BP) is a protein complex involved in the complement system where it acts as inhibitor. C4BP has an octopus-like structure with a central stalk and seven branching alpha-chains. C4BP has an octopus-like structure with a central stalk and seven branching alpha-chains.
The C4 gene encodes the complement component 4, which is involved in the complement system and is an important part of the innate immune system. The gene has two forms: C4A and C4B, encoding form A and B of the complement component 4 protein, respectively. [22]