pentapeptide-3

Pentapeptide-3, a pentapeptide fragment derived from waglerin-1 neurotoxin, is sourced from Temple Viper venom. This compound serves as a competitive antagonist of nicotinic acetylcholine receptors (nAChRs), blocking nerve signals at the post-synaptic membrane. Notably, Pentapeptide-3 exhibits anti-aging properties and is commonly incorporated with other cosmetic peptides for enhanced effects [1] [2].

Pentapeptide-31, a bioactive peptide with anti-aging properties, is utilized as a cosmetic ingredient [1].

Human IgE Pentapeptide HEPP acetate is a pentapeptide that does not produce IgE inhibition in several different systems and is used in the treatment of conjunctivitis.

Relamorelin (RM-131) TFA, a pentapeptide ghrelin analog, is a potent and selective agonist for the ghrelin growth hormone secretagogue receptor (GHSR), exhibiting a K_i of 0.42 nM for the GHS-1a receptor. This compound can cross the blood-brain barrier and effectively increases growth hormone levels while promoting faster gastric emptying, showing significant research potential for conditions such as cachexia, gastroparesis, and disorders related to gastric intestinal motility [1] [2] [3] [4] [5].

Histatin-3, a 32-amino-acid peptide, exhibits potent antimicrobial activities and serves as a substrate for proprotein convertase 1 (PC1), where it is primarily cleaved at a site carboxy-terminal to Arg25 (HRGYR↓SN). Additionally, it acts as a moderately potent, reversible, and competitive inhibitor of furin-mediated cleavage of the pentapeptide pGlu-Arg-Thr-Lys-Arg-MCA fluorogenic substrate, with an inhibition constant (Ki) estimated at 1.98 μM [1].