Histamine Receptor H1 (HRH1) Antibody – Goat 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. 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. It has been associated with multiple processes, including memory and learning, circadian rhythm, and thermoregulation. It is also known to contribute to the pathophysiology of allergic diseases such as atopic dermatitis, asthma, anaphylaxis and allergic rhinitis. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Jan 2015]

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; GPCR, family 1; Membrane protein, multi-pass; Receptor, GPCR

Chromosomal Location of Human Ortholog: 3p25

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

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

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