HRH1 Antibody – Rabbit Polyclonal

Histamine is a ubiquitous messenger molecule released from mast cells, enterochromaffin-like cells, and neurons. Its various actions are mediated by histamine receptors H1, H2, H3 and H4. This gene was thought to be intronless until recently. The protein encoded by this gene is an integral membrane protein and belongs to the G protein-coupled receptor superfamily. It mediates the contraction of smooth muscles, the increase in capillary permeability due to contraction of terminal venules, the release of catecholamine from adrenal medulla, and neurotransmission in the central nervous system. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Jul 2008]

H1R: In peripheral tissues, the H1 subclass of histamine receptors mediates the contraction of smooth muscles, increase in capillary permeability due to contraction of terminal venules, and catecholamine release from adrenal medulla, as well as mediating neurotransmission in the central nervous system. Belongs to the G-protein coupled receptor 1 family.

Protein type: Membrane protein, integral; Receptor, GPCR; GPCR, family 1; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 3p25

Cellular Component: nucleoplasm; integral to plasma membrane; cytoplasm; plasma membrane

Molecular Function: G-protein coupled receptor activity; histamine receptor activity

Biological Process: G-protein coupled receptor protein signaling pathway; inositol phosphate-mediated signaling; positive regulation of vasoconstriction; eosinophil chemotaxis; regulation of synaptic plasticity; visual learning; positive regulation of inositol trisphosphate biosynthetic process; G-protein signaling, coupled to IP3 second messenger (phospholipase C activating); regulation of vascular permeability; inflammatory response; memory