MeSH definition : A family of proteinase-activated receptors that are specific for THROMBIN. They are
found primarily on PLATELETS and on ENDOTHELIAL CELLS. Activation of thrombin receptors
occurs through the proteolytic action of THROMBIN, which cleaves the N-terminal peptide
from the receptor to reveal a new N-terminal peptide that is a cryptic ligand for
the receptor. The receptors signal through HETEROTRIMERIC GTP-BINDING PROTEINS. Small
synthetic peptides that contain the unmasked N-terminal peptide sequence can also
activate the receptor in the absence of proteolytic activity.;
A family of proteinase-activated receptors that are specific for THROMBIN. They are
found primarily on PLATELETS and on ENDOTHELIAL CELLS. Activation of thrombin receptors
occurs through the proteolytic action of THROMBIN, which cleaves the N-terminal peptide
from the receptor to reveal a new N-terminal peptide that is a cryptic ligand for
the receptor. The receptors signal through HETEROTRIMERIC GTP-BINDING PROTEINS. Small
synthetic peptides that contain the unmasked N-terminal peptide sequence can also
activate the receptor in the absence of proteolytic activity.