Recombinant Human Long R3 Insulin-like Growth factor-1 (rHuLR3IGF-1)

• Catalog Number: orb1495061
• Category: Proteins
• Description: Insulin-like growth factor-1 (IGF-1) is the principal hormonal mediator of statural growth. Under normal circumstances, growth hormone (GH) binds to its receptor in the liver, and other tissues, and stimulates the synthesis/secretion of IGF-1. In target tissues, the Type 1 IGF receptor, which is homologous to the insulin receptor, is activated by IGF-1, leading to intracellular signaling which stimulates multiple processes leading to statural growth. The metabolic actions of IGF-1 are in part directed at stimulating the uptake of glucose, fatty acids, and amino acids so that metabolism supports growing tissues. The LR3 is a long-term analog of human IGF-1, specifically designed and manufactured for mammalian cell culture to support large-scale manufacturing of recombinant biopharmaceuticals.
• Form/Appearance: Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 7.2.
• Purity: > 85% by SDS-PAGE and HPLC analyses.
• MW: Approximately 9.1 kDa, a single non-glycosylated polypeptide chain containing 83 amino acids.
• Protein Sequence: MFPAMPLSSL FVNGPRTLCG AELVDALQFV CGDRGFYFNK PTGYGSSSRR APQTGIVDEC CFRSCDLRRL EMYCAPLKPA KSA
• Source: Escherichia coli.
• Biological Activity: Fully biologically active when compared to standard. The ED50 as determined by the stimulation of protein synthesis in L6 myoblasts is less then 10 ng/ml, corresponding to a Specific Activity of ＞1 x 105 IU/mg.
• Endotoxins: Less than 5EU/100mg of rHuLR3IGF-1 as determined by LAL method.
• Storage: This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
• Buffer/Preservatives: Lyophilized from a 0.2mm filtered concentrated solution in 20mM PB, pH 7.2.
• Note: For research use only
• Application notes: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.
• Expiration Date: 6 months from date of receipt.