Benefits (Research Focus) IGF-1 receptor activation studied for selective high-affinity agonism of the IGF-1 receptor PI3K/Akt/mTOR signaling investigated for downstream activation of cellular growth and protein synthesis pathways Reduced IGFBP binding explored for the Arg substitution that decreases IGF-binding protein affinity Extended half-life examined for ~20-30 hour bioactivity window compared to ~15 minutes for native IGF-1 Skeletal muscle research researched for satellite cell activation and protein synthesis endpoints in preclinical models What Researchers Look At IGF-1R binding affinity and downstream phosphorylation cascades (IRS-1, Akt, S6K) PI3K/Akt/mTOR pathway activation in muscle and metabolic cell models IGFBP-3 binding affinity and free fraction pharmacokinetics Skeletal muscle protein synthesis and satellite cell activation endpoints Comparative bioactivity versus native IGF-1 and other IGF-1 analogs in cell-culture systems Quick Specs Form: Lyophilized white powder Net Peptide Content: 1 mg per vial Quantity: 1 vial Appearance: White to off-white lyophilizate Reconstitution: Bacteriostatic or sterile water (added by the end researcher) Purity: 99% by HPLC Identity: MS-verified (per COA) Storage: Protect from light Identity Basics Compound: IGF-1 LR3 (Long [Arg] Insulin-like Growth Factor-1) Synonyms: Long R3 IGF-1
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Preparation of NEM-derivatized cysteine and GSH internal standards The N-ethylmaleimide (NEM) derivatized isotope labeled [ 13 C 3 , 15 N]-cysteine-NEM and [ 13 C 2 , 15 N]-GSH-NEM were prepared by derivatizing the [ 13 C 3 , 15N]-cysteine and [ 13 C 2 , 15 N]-GSH standards with 50 mM NEM in 10 mM ammonium formate (pH = 7.0) at room temperature (30 min) as previously described 95
Protein glutathiolation by nitric oxide: an intracellular mechanism regulating redox protein modification
