phosphorelay sensor kinase activity

Term ID

GO:0000155

Synonyms

• two-component sensor activity
• two-component sensor molecule
• two-component system sensor activity

Definition

Catalysis of the phosphorylation of a histidine residue in response to detection of an extracellular signal such as a chemical ligand or change in environment, to initiate a change in cell state or activity. The two-component sensor is a histidine kinase that autophosphorylates a histidine residue in its active site. The phosphate is then transferred to an aspartate residue in a downstream response regulator, to trigger a response. (4)

References

Ontology

GO: Molecular Function    QuickGO    AmiGO