misincorporation of norleucine for methionine
-17.9564
-18.03
113.084
113.16
C 1 H 2 N 0 O 0 S -1
C 6 H 11 N 1 O 1
From DeltaMass: Average Mass: -18 Average Mass Change:-18 Notes: It has the same mass as leucine or isoleucine and can be charged on the methionyl t-RNA. This often happens in minimal media-prepared fermentations that are not supplemented with enough free methionine. It gives a mass change of -18 and can often be confused with dehydration.
M
MOD:00956
PSI-MOD
modification from DeltaMass
norleucine residue (Nle)