Description

Histatin-3 TFA, a 32 amino acid peptide, possesses powerful antimicrobial properties. Histatin-3 TFA behaves as a substrate for proprotein convertase 1 (PC1), being cleaved by this endoprotease primarily at a site carboxy terminal to the single Arg25 residue (HRGYR decrease SN). Histatin-3 TFA is a moderately potent, reversible and competitive inhibitor of the furin-mediated cleavage of the pentapeptide pGlu-Arg-Thr-Lys-Arg-MCA fluorogenic substrate, with an estimated inhibition constant Ki of 1.98 μM[1].–80°C, 2 years; -20°C, 1 year (Powder, sealed storage, away from moisture and light)–COVID-19-immunoregulation–C178H258N64O48.xC2HF3O2—-[1]A Basak, et al. Histidine-rich human salivary peptides are inhibitors of proprotein convertases furin and PC7 but act as substrates for PC1. J Pept Res. 1997 Jun;49(6):596-603.–112844-49-2–4062.35 (free acid)–99.37–O=C([C@@H](N)CC(O)=O)N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(O)=O)CC(N)=O)=O)CC(O)=O)=O)CC1=CC=C(O)C=C1)=O)CC(C)C)=O)CC2=CC=C(O)C=C2)=O)CC(N)=O)=O)CO)=O)CCCNC(N)=N)=O)CC3=CC=C(O)C=C3)=O)=O)CCCNC(N)=N)=O)CC4=CNC=N4)=O)CO)=O)CC5=CNC=N5)=O)CC6=CNC=N6)=O)CCCCN)=O)CCC(O)=O)=O)CC7=CNC=N7)=O)CC8=CC=CC=C8)=O)CCCCN)=O)CCCNC(N)=N)=O)CCCCN)=O)CC9=CC=C(O)C=C9)=O)=O)CC=CNC=N)=O)CC=CNC=N)=O)CCCNC(N)=N)=O)CCCCN)=O)C)=O)CC=CNC=N)=O)CO.O=C(C(F)(F)F)O.[x]–Inflammation/Immunology–H2O : 50 mg/mL (ultrasonic)–Bacterial—-Anti-infection–Peptides