IGF-1 LR3 is a modified analog of human IGF-1 with a 13-amino-acid N-terminal extension (“Long” variant) and an Arg substitution at position 3 (“R3”). These changes reduce IGF-binding-protein affinity and extend bioactivity, making it useful for preclinical studies examining IGF-1 receptor (IGF-1R) signaling, cell growth, differentiation, and nutrient-sensing pathways.
IGF-1 LR3 is a modified analog of human IGF-1 with a 13-amino-acid N-terminal extension (“Long” variant) and an Arg substitution at position 3 (“R3”). These changes reduce IGF-binding-protein affinity and extend bioactivity, making it useful for preclinical studies examining IGF-1 receptor (IGF-1R) signaling, cell growth, differentiation, and nutrient-sensing pathways.