Aliases for KNG1 Gene
External Ids for KNG1 Gene
Previous Symbols for KNG1 Gene
This gene uses alternative splicing to generate two different proteins- high molecular weight kininogen (HMWK) and low molecular weight kininogen (LMWK). 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. Bradykinin also functions as an antimicrobial peptide with antibacterial and antifungal activity. In contrast to HMWK, LMWK is not involved in blood coagulation. Three transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Nov 2014]
GeneCards Summary for KNG1 Gene
KNG1 (Kininogen 1) is a Protein Coding gene. Diseases associated with KNG1 include high molecular weight kininogen deficiency and brain edema. Among its related pathways are Signaling by GPCR and Signaling by GPCR. GO annotations related to this gene include receptor binding and cysteine-type endopeptidase inhibitor activity.
UniProtKB/Swiss-Prot for KNG1 Gene
(1) Kininogens are inhibitors of thiol proteases; (2) HMW-kininogen plays an important role in blood coagulation by helping to position optimally prekallikrein and factor XI next to factor XII; (3) HMW-kininogen inhibits the thrombin- and plasmin-induced aggregation of thrombocytes; (4) the active peptide bradykinin that is released from HMW-kininogen shows a variety of physiological effects: (4A) influence in smooth muscle contraction, (4B) induction of hypotension, (4C) natriuresis and diuresis, (4D) decrease in blood glucose level, (4E) it is a mediator of inflammation and causes (4E1) increase in vascular permeability, (4E2) stimulation of nociceptors (4E3) release of other mediators of inflammation (e.g. prostaglandins), (4F) it has a cardioprotective effect (directly via bradykinin action, indirectly via endothelium-derived relaxing factor action); (5) LMW-kininogen inhibits the aggregation of thrombocytes; (6) LMW-kininogen is in contrast to HMW-kininogen not involved in blood clotting
Bradykinin and related kinins are a family of small peptides which act as mediators of inflammation and pain. They exert a variety of biological effects on the endothelium and peripheral circulation through their action on two G-protein-coupled bradykinin receptor subtypes, the B1 receptor and the B2 receptor. Bradykinin is an important pro-inflammatory molecule that causes vasodilation, plasma protein extravasation, smooth muscle contraction and pain.