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Product Name Factor I light chain Chinese Name 补体因子I轻链抗体 Alias AHUS3; ARMD13; C3b INA; C3b inactivator; C3B/C4B inactivator; C3BINA; CFAI_HUMAN; Cfi; Complement component I; Complement control protein factor I; Complement factor I; Complement factor I heavy chain; Complement factor I light chain; F1; factor I; FactorI; FI; I factor; IF; KAF; Konglutinogen activating factor; Light chain of factor I; OTTHUMP00000219728; OTTHUMP00000221928 Research Area Cardiovascular immunology Immunogen Species Rabbit Clonality Polyclonal React Species (predicted: Human, Mouse, Rat, Cow, Horse, ) Applications WB=1:500-2000 ELISA=1:5000-10000 IHC-P=1:100-500 IHC-F=1:100-500 ICC=1:100-500 IF=1:100-500 (Paraffin sections need antigen repair)
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.Theoretical molecular weight 22kDa Cellular localization Extracellular matrix Secretory protein Form Liquid Concentration 1mg/ml immunogen KLH conjugated synthetic peptide derived from human Factor I Complement factor I light chain: 281-380/582 Lsotype IgG Purification affinity purified by Protein A Buffer Solution 0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol. Storage Shipped at 4℃. Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. Attention This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. PubMed PubMed Product Detail The complement pathway is an important host defense system that contributes to both innate and acquired immunity. There are three pathways of complement activation: the classical pathway, lectin pathway and alternative pathway. Complement protein Factor I is a key serine protease that modulates the complement cascade by regulating the levels of C3 convertases. It circulates in plasma as a heavily N-glycosylated heterodimer made up of two disulfide linked chains, each carrying three N-linked oligosaccharide chains that may have both structural and functional roles in the interactions with the natural substrate and the cofactor during catalysis. Factor I is a serine protease with a high degree of specificity for C3b and C4b. It requires protein cofactors for cleavage of these complement proteins; Factor H, CR1 or MCP are required for C3b cleavage, and C4bp or CR1 are required for C4b cleavage.
Function:
Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively.
Subcellular Location:
Secreted; extracellular space.
Tissue Specificity:
Plasma.
DISEASE:
Defects in CFI are a cause of susceptibility to hemolytic uremic syndrome atypical type 3 (AHUS3) [MIM:612923]. An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Note=Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype. Defects in CFI are the cause of complement factor I deficiency (CFI deficiency) [MIM:610984]. CFI deficiency is an autosomal recessive condition associated with a propensity to pyogenic infections.
Similarity:
Belongs to the peptidase S1 family.
Contains 1 Kazal-like domain.
Contains 2 LDL-receptor class A domains.
Contains 1 peptidase S1 domain.
Contains 1 SRCR domain.
SWISS:
P05156
Gene ID:
3426
Database links:Entrez Gene: 3426 Human
Omim: 217030 Human
SwissProt: P05156 Human
Unigene: 312485 Human
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