Entrez 3827 | Ensembl ENSG00000113889 | |
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Aliases KNG1, BDK, BK, KNG, Kininogen 1 External IDs MGI: 1097705 HomoloGene: 88343 GeneCards: KNG1 | ||
Gene music using protein sequence of kng1 kininogen 1
Kininogen-1 (KNG1), also known as alpha-2-thiol proteinase inhibitor, Williams-Fitzgerald-Flaujeac factor or the HMWK-kallikrein factor is a protein that in humans is encoded by the KNG1 gene. Kininogen-1 is the precursor protein to high-molecular-weight kininogen (HMWK), low-molecular-weight kininogen (LMWK), and bradykinin.
Contents
Expression
The KNG1 gene uses alternative splicing to generate two different proteins: high-molecular-weight kininogen (HMWK) and low-molecular-weight kininogen (LMWK). HMWK in turn is cleaved by the enzyme kallikrein to produce bradykinin.
Function
HMWK is essential for blood coagulation and assembly of the kallikrein-kinin system. Also, bradykinin, a peptide causing numerous physiological effects, is released from HMWK. In contrast to HMWK, LMWK is not involved in blood coagulation.
Kininogen-1 is a constituent of the blood coagulation system as well as the kinin-kallikrein system.