IGF-1 LR3 Research Profile: Investigating Hyperplastic Proliferation and Tyrosine Kinase Receptor Agonism
Long Arg3 Insulin-Like Growth Factor-1 (IGF-1 LR3) is a synthetic, recombinant analog of endogenous human IGF-1, structurally altered to contain an $Arg$ substitution for $Glu$ at position 3, alongside a 13-amino acid N-terminal extension peptide. In 2026 life sciences research, this structural architecture serves as a critical model for exploring cell differentiation, protein synthesis, and tissue repair pathways. By fundamentally altering protein binding kinetics, this molecule allows investigators to study prolonged, uninhibited tyrosine kinase activation in cell cultures. Institutions choosing to buy IGF-1 LR3 online trust Peptide Crafters for analytical transparency and batch-specific lab reports.
Molecular Specifications
| Parameter | Specification |
| Molecular Structure | Recombinant IGF-1 analog with $Glu^3 \rightarrow Arg^3$ substitution and 13-AA N-terminal extension |
| Molecular Formula | $C_{400}H_{625}N_{111}O_{115}S_{9}$ |
| Molecular Weight | $9111.6\ g/mol$ |
| CAS Number | 943022-45-3 |
| Structure | Synthetic, single-chain globular cross-linked polypeptide (Acetate Salt) |
| Purity Grade | 99%+ Analytical Standard |
Pharmacokinetic Horizons
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De-Targeted Binding Protein Affinity and Potentiated Ligand-Receptor Affinity: IGF-1 LR3 is highly utilized for Analyzing the binding affinity at the type 1 Insulin-Like Growth Factor Receptor (IGF-1R) complex, studying how the N-terminal modifications drastically lower its affinity for inhibitory IGFBPs while maintaining a high affinity for the signal-transducing receptor.
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Structural Shielding and Proteolytic Mitigation: The replacement of glutamic acid at the third locus with arginine provides targeted Proteolytic Mitigation against physiological enzymatic deactivation and binding protein sequestration, expanding its biological half-life in in-vitro media over standard native IGF-1 by up to threefold.
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Intracellular Cellular Transduction Signaling Flux: Investigations center on the peptide’s downstream Cellular Transduction pathways, mapping the autophosphorylation of the intracellular tyrosine kinase domain that activates both the PI3K/Akt and MAPK/ERK pathways to induce nuclear transcript shifts linked to cellular hyperplasia.
Why Procure from Peptide Crafters?
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ISO-Certified HPLC Identification: Every batch from this peptide crafter undergoes thorough reverse-phase high-performance liquid chromatography and mass spectrometry profiling to verify exact structural folding, correct disulfide linkage orientation, and molecular weight profiles.
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Vacuum-Sealed Lyophilized Preservation: Reagents undergo state-of-the-art moisture extraction and deep-freeze lyophilization under sterile parameters to prevent structural oxidation, ensuring perfect stability when you buy peptides online.
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Strict Institutional Security: While procurement teams routinely implement a peptide crafters coupon code or a peptide crafters discount code to optimize laboratory allocations, our primary value rests on strict USP 71/85 sterilization criteria, eliminating systemic variables from your biochemical assays.
For comprehensive sequence packages and automated bulk logistics, navigate to the official peptide crafters catalog portal. Entering an active peptide crafters coupon code during checkout enables purchasing teams to obtain clinical-grade compounds while maintaining precise alignment with expected financial boundaries, supported by industry-best peptide crafters reviews.
Research Use Only: All Peptide Crafters products are strictly for in-vitro laboratory research. Not for human or veterinary use. Communication regarding bodily administration will result in an immediate account termination.
