uncategorized crosslinked residues modified L-selenocysteine residue L-selenocystine (oxidized selenocysteine) (Sec-Sec) (R,R)-3,3'-diselane-1,2-diylbis(2-aminopropanoic acid) -2.0156500339508056641 -2.0199999809265136719 298.079986572265625 299.891632080078125 3,3'-diselenobis(2-aminopropanoic acid) 3,3'-diselenobisalanine 3,3'-diselenodialanine A protein modification that effectively cross-links two L-selenocysteine residues to form L-selenocystine, C 0 H -2 N 0 O 0 Se 0 C 6 H 8 N 2 O 2 Se 2 CROSSLNK Selenocystine (Sec-Sec) Cross-link 2; for formation of the same modification by substitution of 2 selenium for 2 sulfur atoms in L-cystine, see MOD:01184. L-selenocystine MOD:01183 PSI-MOD Sec2 U, U beta,beta'-diamino-beta,beta'-dicarboxydiethyldiselenide beta,beta'-diselenodialanine bis(alpha-aminopropionic acid)-beta-diselenide bis(beta-amino-beta-carboxyethyl)diselenide diselenocysteine hypothetical selenium cystine