IGFLong-acting Insulin-like Growth Factor 1 analog with extended half-life for muscle growth and recovery research.
IGF-1 LR3 (Long R3 Insulin-like Growth Factor-1) is a modified version of the naturally occurring IGF-1 protein. The 'Long R3' designation refers to an amino acid substitution (Arg for Glu at position 3) and a 13-amino acid N-terminal extension, which decreases binding to IGF binding proteins and extends its biological half-life. Research applications include skeletal muscle hypertrophy, satellite cell proliferation, and anti-apoptotic mechanisms in neural tissue.