KLKB1 Gene Summary [Human]

This gene encodes a glycoprotein that participates in the surface-dependent activation of blood coagulation, fibrinolysis, kinin generation and inflammation. The encoded preproprotein present in plasma as a non-covalent complex with high molecular weight kininogen undergoes proteolytic processing mediated by activated coagulation factor XII to generate a disulfide-linked, heterodimeric serine protease comprised of heavy and light chains. Certain mutations in this gene cause prekallikrein deficiency. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2016]

Details

Type
Protein Coding
Official Symbol
KLKB1
Official Name
kallikrein B1 [Source:HGNC Symbol;Acc:HGNC:6371]
Ensembl ID
ENSG00000164344
Bio databases IDs NCBI: 3818 Ensembl: ENSG00000164344
Aliases kallikrein B1, Fletcher factor
Synonyms APS, Kal-3, kallikrein B1, kallikrein B, plasma 1, Kalp1, KALP15, Kininogenin, KLK3, PK, PKK, PKKD, PPK, PREKALLIKREIN
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human KLKB1 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • PAN_APPLE
  • Trypsin-like serine protease
  • trypsin
  • Tryp_SPc
  • serine endopeptidase
  • peptidase
  • apple domain
  • plasma kallikrein
  • PAN domain
  • protein binding

Pathways

Biological processes and signaling networks where the KLKB1 gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
binds
disease
  • liver cancer
  • epithelial cancer
  • coronary artery disease
  • prekallikrein deficiency
  • hereditary angioedema type II
  • hereditary angioedema
  • edema
  • venous thromboembolism
  • postoperative hemorrhage
  • perioperative hemorrhage
regulated by
regulates
role in cell
  • synthesis in
  • activation in
  • activation
  • number
  • aggregation
  • recruitment

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Extracellular Space
  • Cytoplasm
  • Plasma Membrane
  • plasma

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human KLKB1 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • zymogen activation
  • positive regulation of fibrinolysis
  • plasminogen activation
  • proteolysis
  • blood coagulation
  • fibrinolysis
  • Factor XII activation

Cellular Component

Where in the cell the gene product is active
  • extracellular space
  • extracellular vesicular exosome
  • extracellular region
  • plasma membrane

Molecular Function

What the gene product does at the molecular level
  • protein binding
  • serine-type endopeptidase activity

Gene-Specific Assays for Results You Can Trust

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