background:
May act as a scaffolding protein within caveolar membranes. Interacts directly with G-protein alpha subunits and can functionally regulate their activity. Acts as an accessory protein in conjunction with CAV1 in targeting to lipid rafts and driving caveolae formation. The Ser-36 phosphorylated form has a role in modulating mitosis in endothelial cells. Positive regulator of cellular mitogenesis of the MAPK signaling pathway. Required for the insulin-stimulated nuclear translocation and activation of MAPK1 and STAT3, and the subsequent regulation of cell cycle progression.
Function:
May act as a scaffolding protein within caveolar membranes. Interacts directly with G-protein alpha subunits and can functionally regulate their activity. Acts as an accessory protein in conjunction with CAV1 in targeting to lipid rafts and driving caveolae formation. The Ser-36 phosphorylated form has a role in modulating mitosis in endothelial cells. Positive regulator of cellular mitogenesis of the MAPK signaling pathway. Required for the insulin-stimulated nuclear translocation and activation of MAPK1 and STAT3, and the subsequent regulation of cell cycle progression.
Subunit:
Monomer or homodimer.
Subcellular Location:
Nucleus. Cytoplasm. Golgi apparatus membrane; Peripheral membrane protein. Cell membrane; Peripheral membrane protein. Membrane, caveola; Peripheral membrane protein.
Tissue Specificity:
Expressed in endothelial cells, smooth muscle cells, skeletal myoblasts and fibroblasts.
Post-translational modifications:
Phosphorylated on serine and tyrosine residues. CAV1 promotes phosphorylation on Ser-23 which then targets the complex to the plasma membrane, lipid rafts and caveolae. Phosphorylation on Ser-36 appears to modulate mitosis in endothelial cells (By similarity). Phosphorylation on both Tyr-19 and Tyr-27 is required for insulin-induced 'Ser-727' phosphorylation of STAT3 and its activation. Phosphorylation on Tyr-19 is required for insulin-induced phosphorylation of MAPK1 and DNA binding of STAT3. Tyrosine phosphorylation is induced by both EGF and insulin.
Similarity:
Belongs to the caveolin family.
Database links:
Entrez Gene: 858 Human
Entrez Gene: 12390 Mouse
Entrez Gene: 100362824 Rat
Entrez Gene: 363425 Rat
Omim: 601048 Human
SwissProt: O46550 Dog
SwissProt: P51636 Human
SwissProt: Q9WVC3 Mouse
SwissProt: Q2IBC5 Rat
Unigene: 212332 Human
Unigene: 603096 Human
Unigene: 396075 Mouse
Unigene: 81070 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
Caveolin是细胞生长相关信号途径及肿瘤发生发展过程中重要的抑制因子，Caveolae是细胞膜内的特殊膜结构，参与包括细胞的分子运输、细胞粘附和信号转导在内的多种细胞活动。Caveolin-1是Caveolae中重要的结构蛋白，抑制细胞生长，与多种人类肿瘤发生发展相关的信号分子相互作用。Caveolin在信号转导的整合中起支架蛋白的作用。Caveolin构成了一个蛋白家族，他们是细胞质膜中发夹样结构域的主要结构成分。Caveolin在信号转导的整合中起支架蛋白的作用。至今已经鉴定了3种Caveolin （Caveolin-1、2 和3），它们具有不同的组织分布。
|
|
