In an ion trap the protonated molecules of the cyclic undecapeptides cyclosporins having 3-hydroxy-4-methyl-2-methylamino-6-octenoic acid (MeBmt) in their backbone undergo the N,O peptidyl shift into the corresponding (M+H) ions of isocyclosporins.
In an ion trap the protonated molecules of the cyclic undecapeptides cyclosporins having 3-hydroxy-4-methyl-2-methylamino-6-octenoic acid (MeBmt) in their backbone undergo the N,O peptidyl shift into the corresponding (M+H) ions of isocyclosporins. (en)