L-beta-methylthioasparagine 160.0306549072265625 160.1999969482421875 45.987720489501953125 46.090000152587890625 C 1 H 2 S 1 A protein modification that effectively converts an L-asparagine residue to L-beta-methylthioasparagine. N MOD:00325 Methylthio beta-(methylthio)asparagine Beta-methylthiolation hypothetical 3-(methylthio)-L-asparagine none (2R,3Xi)-2-amino-3-(methylsulfanyl)-4-butanediamic acid PSI-MOD This modification was predicted for ribosomal protein S12 in Bacillus subtilis when the sequence in the original version of the genome was reported to have asparagine rather than aspartic acid at the position of the methylthioaspartic acid modification (see MOD:00237). Two groups independently confirmed that the genome sequence was incorrect. The sequence in the revised genome has aspartic acid at that position. This is a deprecated entry in RESID. It probably does not occur naturally [JSG]. C 5 H 8 N 2 O 2 S 1 3-carboxamido-S-methyl-cysteine 2,4-diamino-3-(methylsulfanyl)-4-oxobutanoic acid modified L-asparagine residue methylthiolated residue