[Term]
id: PR:000025796
name: integrin alpha
def: "A protein that is composed of a long N-terminal extracellular domain, a transmembrane domain and a short cytoplasmic C-terminal domain. The N-terminal domain contains beta-propeller repeats (interrupted by an A domain in a subset of integrins alpha), while the C-terminal domain contains a GFFxR motif." [PMID:19693543]
comment: Category=family. Integrins are heterodimeric complexes of an alpha and a beta subunit. They are a structurally elaborate family of adhesion molecules that transmit signals bidirectionally across the plasma membrane by undergoing large-scale structural rearrangements. By regulating cell-cell and cell-matrix contacts, integrins participate in a wide-range of biological interactions including development, tissue repair, angiogenesis, inflammation and hemostasis. [PMID:10402956, PMID:11988479, PMID:9676575].
is_a: PR:000000001 ! protein