Calcium and Integrin Binding Protein 1 (CIB1) Antibody – Mouse Monoclonal

The protein encoded by this gene is a member of the calcium-binding protein family. The specific function of this protein has not yet been determined; however this protein is known to interact with DNA-dependent protein kinase and may play a role in kinase-phosphatase regulation of DNA end joining. This protein also interacts with integrin alpha(IIb)beta(3), which may implicate this protein as a regulatory molecule for alpha(IIb)beta(3). [provided by RefSeq]

CIB1: May convert the inactive conformation of integrin alpha- IIb/beta3 to an active form through binding to the integrin cytoplasmic domain. Induces cell migration and spreading mediated through integrin (possibly via focal adhesion complexes). Functions as a negative regulator of stress activated MAP kinase (MAPK) signaling pathways. May play a role in regulation of apoptosis. Interacts with and up-regulates PTK2/FAK1 activity. Down regulates inositol 1,4,5-trisphosphate receptor-dependent calcium signaling. Participates in endomitotic cell cycle, a form of mitosis in which both karyokinesis and cytokinesis are interrupted and is a hallmark of megakaryocyte differentiation.

Protein type: Motility/polarity/chemotaxis; Cell adhesion

Chromosomal Location of Human Ortholog: 15q25.3-q26

Cellular Component: Golgi apparatus; centrosome; filopodium tip; neuron projection; endoplasmic reticulum; nucleoplasm; growth cone; cell soma; membrane; lamellipodium; perinuclear region of cytoplasm; cytoplasm; apical plasma membrane; plasma membrane; nucleus; sarcolemma; vesicle

Molecular Function: protein binding; Ras GTPase binding; protein anchor; calcium ion binding

Biological Process: apoptosis; endomitotic cell cycle; cytoplasmic microtubule organization and biogenesis; negative regulation of megakaryocyte differentiation; activation of NF-kappaB transcription factor; negative regulation of cell proliferation; negative regulation of protein amino acid phosphorylation; double-strand break repair; positive regulation of cell proliferation; angiogenesis; positive regulation of cell-matrix adhesion; cell adhesion; negative regulation of protein kinase B signaling cascade; negative regulation of microtubule depolymerization; positive regulation of cell adhesion mediated by integrin; positive regulation of metalloenzyme activity; positive regulation of cell growth; regulation of cell proliferation; cell division; platelet formation; positive regulation of protein amino acid phosphorylation; regulation of cell division; response to DNA damage stimulus; spermatid development; negative regulation of apoptosis; positive regulation of cell migration