ICAM1: a type I membrane protein of the immunoglobulin superfamily. Is a ligand for the leukocyte adhesion LFA-1 protein (Integrin alpha-L/beta-2) and a Rhinovirus receptor. Typically expressed on endothelial cells and cells of the immune system. ICAM1 binds to integrins of type CD11a / CD18, or CD11b / CD18. Its expression is activated by p53 in an NF-kappaB-independent manner. Induced by TNFalpha in a process that involves IKKbeta.
Protein type: Membrane protein, integral; Cell adhesion; Immunoglobulin superfamily
Cellular Component: extracellular space; cell surface; focal adhesion; membrane; integral to plasma membrane; plasma membrane; immunological synapse; lipid raft; external side of plasma membrane
Molecular Function: integrin binding; protein complex binding
Biological Process: positive regulation of nitric oxide biosynthetic process; T cell antigen processing and presentation; response to lipopolysaccharide; response to organic cyclic substance; activation of NF-kappaB transcription factor; positive regulation of cellular extravasation; regulation of cell shape; leukocyte adhesion; cellular response to nutrient levels; cell-cell adhesion; sensory perception of sound; ovarian follicle development; T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell; membrane to membrane docking; response to sulfur dioxide; cell adhesion; acute inflammatory response to antigenic stimulus; response to drug; regulation of cell adhesion; virion attachment, binding of host cell surface receptor; negative regulation of calcium ion transport; response to amphetamine; cell aging; response to amino acid stimulus; positive regulation of peptidyl-tyrosine phosphorylation; response to ethanol; response to copper ion; positive regulation of actin filament polymerization; response to hypoxia; positive regulation of vasoconstriction; cell adhesion mediated by integrin; adhesion to host; response to ionizing radiation; leukocyte migration; positive regulation of GTPase activity
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