ras inhibitory peptide

Son of sevenless homolog 1 (Sos1) is a guanine nucleotide exchange factor (GEF) that directs the exchange of Ras-GDP to Ras-GTP by binding to SH3 domains of the growth factor receptor-bound protein 2 (Grb2), leading to the activation of ERK. Ras inhibitory peptide is a synthetic peptide that contains the sequence PVPPR, which corresponds to a region within human Sos1 that interacts with an SH3 domain of Grb2. It specifically blocks the interaction of the GEF with Grb2, preventing an interaction that is essential for Ras activation by receptor tyrosine kinases, including epidermal growth factor receptor.

Ras Inhibitory Peptide acetate is a peptide involved in the Ras-dependent signaling pathway that plays an important role in human cancers initiated by oncogenic receptors.

KRPEP-2D acetate was identified as a K-Ras(G12D) selective inhibitory peptide against the G12D mutant of K-Ras, which is a key member of the Ras protein family and an attractive cancer therapeutic target.

KS-58 is a derivative of KRpep-2d. It acts as an inhibitory peptide for K-Ras(G12D), selectively binding to K-Ras. KS-58 is capable of penetrating cells and interrupts the interaction between intracellular Ras and effector proteins. It inhibits the proliferation of tumor cells and exhibits antitumor activity.