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Antibody is stable for 24 months.
Positive Control: Human breast carcinoma or colon carcinoma. Cellular Localization: Cell membrane.
Specificity Comments: Receptor tyrosine kinases (RTKs) are transmembrane molecular scaffolds that influence cellular processes including the cell cycle, cell migration, cell metabolism, cell survival, proliferation and differentiation. Insulin-like growth factor-I receptor (IGF-IR) is an RTK that stimulates growth in many different cell types, blocks apoptosis, acts as an intermediate of many growth hormone responses and may stimulate the growth of some types of cancer. The IGF-IR cognate ligand Insulin-like growth factor-I (IGF-I) promotes association of IGF-IR with Shc, GRB2 and Sos 1, which initiates Ras and ERK kinase cascades, thereby modifying transcription factor activity, such as activation of the Elk transcription factors. The modular phosphotyrosine binding (PTB) domains of Insulin receptor substrate (IRS)-1 and -2 can associate with active IGF-IR and initiate phosphatidylinositol 3-kinase-dependent downstream signals. The human IGF-IR gene maps to chromosome 15q26.3 and encodes a 1,376 amino acid precursor protein that cleaves into subunits. The human IGF-IIR gene maps to chromosome 6q26 and encodes a 2,491 amino acid transmembrane protein.
IGF1R, also known as Insulin-like Growth Factor 1 (IGF-1) Receptor, is a receptor tyrosine kinase activated by IGF-1 and IGF-2. IGFR has been implicated in a variety of cancers. The protein is a tetramer consisting of two alpha, and two beta subunits. The alpha-subunits binds to insulin growth factor 1 with higher affinity than to insulin growth factor 2. Binding results in a conformational change, followed by autophosphorylation of IGF-1R at positions 1134, 1135, 1136. The activated IGF-1R in turn, causes phosphorylation of substrate proteins, followed by sequential activation of RAS, RAF, and mitogen-activated protein kinase isoforms ERK, p38, and JNK, leading to the transcription of genes that drive proliferation.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: CD221; CD221 antigen; IGF 1 receptor; IGF 1R; IGF-I receptor; Insulin like growth factor 1 receptor precursor; Insulin-like growth factor 1 receptor; Insulin-like growth factor I receptor; soluble IGF1R variant 1; soluble IGF1R variant 2
基因别名: CD221; IGF1R; IGFIR; IGFR; JTK13
UniProt ID: (Human) Q14CV2
Entrez Gene ID: (Human) 3480
分子生物学功能: transmembrane signal receptor