IGF1R / CD221 recombinant protein

Recombinant Human IGF1R / CD221 Protein (His tag)

Cat. Num. AAA2546468

• Gene Names: IGF1R; IGFR; CD221; IGFIR; JTK13
• Purity: > 90 % as determined by SDS-PAGE
• Synonyms: IGF1R / CD221; Recombinant Human IGF1R / CD221 Protein (His tag); CD221; IGFIR; JTK13; MGC142170; MGC142172; MGC18216; IGF1R / CD221 recombinant protein

• Host: Human Cells
• Purity/Purification: > 90 % as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS Buffer, pH 7.4
• Sequence Length: 1367

• Application Notes: The calculated molecular masses for alpha subunit, beta subunit and the single chain of the receptor are approximately 81 kDa, 23 kDa and 104 kDa, respectively. As a result of glycosylation, the recombinant single chain, alpha subunit and beta subunit have apparent molecular masses of approximately 150 kDa, 120 kDa and 48 kDa, respectively in SDS-PAGE under reducing conditions.
• Predicted N Terminal: Glu 31
• Endotoxin: < 1.0 EU per mug of the protein as determined by the LAL method
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

SDS-PAGE

Related Product Information for IGF1R / CD221 recombinant protein

Background: The insulin-like growth factor-1 receptor (IGF1R) is a transmembrane tyrosine kinase involved in several biological processes including cell proliferation, differentiation, DNA repair, and cell survival. This a disulfide-linked heterotetrameric transmembrane protein consisting of two alpha and two beta subunits, and among which, the alpha subunit is extracellular while the beta subunit has an extracellular domain, a transmembrane domain and a cytoplasmic tyrosine kinase domain. IGF1R signalling pathway is activated in the mammalian nervous system from early developmental stages. Its major effect on developing neural cells is to promote their growth and survival. This pathway can integrate its action with signalling pathways of growth and morphogenetic factors that induce cell fate specification and selective expansion of specified neural cell subsets. Modulation of cell migration is another possible role that IGF1R activation may play in neurogenesis. In the mature brain, IGF-I binding sites have been found in different regions of the brain, and multiple reports confirmed a strong neuroprotective action of the IGF-IR against different pro-apoptotic insults. IGF1R is an important signaling molecule in cancer cells and plays an essential role in the establishment and maintenance of the transformed phenotype . Inhibition of IGF1R signaling thus appears to be a promising strategy to interfere with the growth and survival of cancer cells. IGF1R is frequently overexpressed by tumours, and mediates proliferation and apoptosis protection. IGF signalling also influences hypoxia signalling, protease secretion, tumour cell motility and adhesion, and thus can affect the propensity for invasion and metastasis. Therefore, the IGF1R is now an attractive anti-cancer treatment target.

Description: A DNA sequence encoding the extracellular domain (Met 1-Asn 932) of human IGF1 Receptor (NP_000866.1) precursor was expressed with a C-terminal polyhistidine tag.

NCBI and Uniprot Product Information

• NCBI GI #: 4557665
• NCBI GeneID: 3480
• NCBI Accession #: NP_000866.1
• NCBI GenBank Nucleotide #: NM_000875.4
• UniProt Accession #: P08069; Q14CV2; Q9UCC0; B1B5Y2
• Molecular Weight: 154,793 Da
• NCBI Official Full Name: insulin-like growth factor 1 receptor isoform 1
• NCBI Official Synonym Full Names: insulin like growth factor 1 receptor
• NCBI Official Symbol: IGF1R
• NCBI Official Synonym Symbols: IGFR; CD221; IGFIR; JTK13
• NCBI Protein Information: insulin-like growth factor 1 receptor
• UniProt Protein Name: Insulin-like growth factor 1 receptor
• UniProt Gene Name: IGF1R
• UniProt Synonym Gene Names: IGF-I receptor

NCBI Description

This receptor binds insulin-like growth factor with a high affinity. It has tyrosine kinase activity. The insulin-like growth factor I receptor plays a critical role in transformation events. Cleavage of the precursor generates alpha and beta subunits. It is highly overexpressed in most malignant tissues where it functions as an anti-apoptotic agent by enhancing cell survival. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2014]

Uniprot Description

IGF1R: a receptor tyrosine kinase that binds insulin-like growth factor 1 (IGF1) with a high affinity and IGF2 with a lower affinity. Functions as an anti-apoptotic agent by enhancing cell survival. Can play a critical role in transformation events. Cleavage of the precursor generates alpha and beta subunits. Tetramer of 2 alpha and 2 beta chains linked by disulfide bonds. The alpha chains contribute to the formation of the ligand- binding domain, while the beta chain carries the kinase domain. Interacts with PIK3R1 and with the PTB/PID domains of IRS1 and SHC1 in vitro when autophosphorylated on tyrosine residues. Mutated in rare cases of pre- and post-natal growth retardation. One SNP associated with increased human longevity. Increased expression of IGF1R and other pathway members associated with progression and malignancy in a range of cancers. Inhibitors: AG1024, AEW541.

Protein type: EC 2.7.10.1; InsR family; Kinase, protein; Membrane protein, integral; Protein kinase, TK; Protein kinase, tyrosine (receptor); TK group

Chromosomal Location of Human Ortholog: 15q26.3

Cellular Component: integral to plasma membrane; intracellular membrane-bound organelle; membrane; plasma membrane; receptor complex

Molecular Function: identical protein binding; insulin binding; insulin receptor binding; insulin receptor substrate binding; insulin-like growth factor binding; insulin-like growth factor I binding; insulin-like growth factor receptor activity; phosphoinositide 3-kinase binding; protein binding; protein-tyrosine kinase activity

Biological Process: immune response; inactivation of MAPKK activity; insulin receptor signaling pathway; insulin-like growth factor receptor signaling pathway; negative regulation of apoptosis; phosphoinositide 3-kinase cascade; phosphoinositide-mediated signaling; positive regulation of cell migration; positive regulation of cell proliferation; positive regulation of DNA replication; protein amino acid autophosphorylation; protein tetramerization; regulation of JNK cascade; signal transduction

Disease: Insulin-like Growth Factor I, Resistance To