Caveolin-1 (CAV1) Antibody – Rabbit Polyclonal

The scaffolding protein encoded by this gene is the main component of the caveolae plasma membranes found in most cell types. The protein links integrin subunits to the tyrosine kinase FYN, an initiating step in coupling integrins to the Ras-ERK pathway and promoting cell cycle progression. The gene is a tumor suppressor gene candidate and a negative regulator of the Ras-p42/44 mitogen-activated kinase cascade. Caveolin 1 and caveolin 2 are located next to each other on chromosome 7 and express colocalizing proteins that form a stable hetero-oligomeric complex. Mutations in this gene have been associated with Berardinelli-Seip congenital lipodystrophy. Alternatively spliced transcripts encode alpha and beta isoforms of caveolin 1.[provided by RefSeq, Mar 2010]

Caveolin-1: May act as a scaffolding protein within caveolar membranes. Interacts directly with G-protein alpha subunits and can functionally regulate their activity. Involved in the costimulatory signal essential for T-cell receptor (TCR)- mediated T-cell activation. Its binding to DPP4 induces T-cell proliferation and NF-kappa-B activation in a T-cell receptor/CD3- dependent manner. Recruits CTNNB1 to caveolar membranes and may regulate CTNNB1-mediated signaling through the Wnt pathway. Homooligomer. Interacts with GLIPR2, NOSTRIN, SNAP25 and syntaxin. Interacts with rotavirus A NSP4. Interacts (via the N- terminus) with DPP4; the interaction is direct. Interacts with CTNNB1, CDH1 and JUP. Interacts with BMX and BTK. Expressed in muscle and lung, less so in liver, brain and kidney. Belongs to the caveolin family. 2 isoforms of the human protein are produced by alternative initiation.

Protein type: Nuclear receptor co-regulator; Adaptor/scaffold; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 7q31.1

Cellular Component: focal adhesion; protein complex; basolateral plasma membrane; endoplasmic reticulum; integral to plasma membrane; lipid particle; caveola; cell cortex; cilium; acrosomal membrane; lipid raft; Golgi membrane; early endosome membrane; perinuclear region of cytoplasm; apical plasma membrane; plasma membrane; intracellular; cytoplasmic vesicle; endosome

Molecular Function: identical protein binding; protein binding; protease activator activity; enzyme binding; cholesterol binding; patched binding; protein complex scaffold; nitric-oxide synthase binding; structural molecule activity; protein kinase binding; receptor binding

Biological Process: mammary gland involution; viral reproduction; negative regulation of epithelial cell differentiation; negative regulation of tyrosine phosphorylation of Stat5 protein; nitric oxide homeostasis; negative regulation of BMP signaling pathway; calcium ion homeostasis; sequestering of lipid; protein localization; regulation of the force of heart contraction by chemical signal; regulation of fatty acid metabolic process; negative regulation of protein binding; inactivation of MAPK activity; regulation of smooth muscle contraction; maintenance of cellular protein localization; skeletal muscle development; cytosolic calcium ion homeostasis; negative regulation of nitric-oxide synthase activity; cellular response to starvation; membrane depolarization; cholesterol homeostasis; response to estrogen stimulus; T cell costimulation; negative regulation of endothelial cell proliferation; negative regulation of protein ubiquitination; regulation of nitric-oxide synthase activity; response to calcium ion; response to progesterone stimulus; negative regulation of JAK-STAT cascade; leukocyte migration; lactation; vesicle organization and biogenesis; negative regulation of peptidyl-serine phosphorylation; negative regulation of transcription from RNA polymerase II promoter; negative regulation of pinocytosis; nitric oxide metabolic process; mammary gland development; calcium ion transport; negative regulation of cytokine and chemokine mediated signaling pathway; angiogenesis; vasculogenesis; protein homooligomerization; vasoconstriction; cholesterol transport; negative regulation of MAPKKK cascade; negative regulation of nitric oxide biosynthetic process; MAPKKK cascade; positive regulation of metalloenzyme activity; positive regulation of peptidyl-serine phosphorylation; regulation of peptidase activity; cellular calcium ion homeostasis; triacylglycerol metabolic process; regulation of blood coagulation; positive regulation of vasoconstriction; response to hypoxia; blood coagulation; vascular endothelial growth factor receptor signaling pathway

Disease: Lipodystrophy, Congenital Generalized, Type 3; Partial Lipodystrophy, Congenital Cataracts, And Neurodegeneration Syndrome; Pulmonary Hypertension, Primary, 3