Onychocin B
Application Notes
Onychocin B is an N-methylated cyclotetrapeptide, similar in structure to hirsutide, originally isolated from the fungus Onychocola sclerotic. Onychocin B is a cardiac calcium channel blocker but does not inhibit the hERG potassium channel. Onychocin B moderately inhibits the proliferation of mouse myeloma cells in a dose-dependent manner with an IC50 of 23.1 µg/mL.
References
- Isolation and structural elucidation of cyclic tetrapeptides from Onychocola sclerotic. Pérez-Victoria I. et al. J Nat Prod. 2012, 75, 1210.
- Cyclization of linear tetrapeptides containing N-methylated amino acids by using 1-propanephosphonic acid anhydride. Zhang S. et al. Eur J Org Chem. 2017, 2017, 149.