tris-L-cysteinyl L-aspartato tetrairon tetrasulfide 347.59674072265625 347.6199951171875 771.6512451171875 772.1400146484375 METAL Iron-sulfur (4Fe-4S) Cross-link 4. PSI-MOD C 13 H 16 N 4 O 6 S 7 Fe 4 none H -4 S 4 Fe 4 tris-L-cysteinyl L-aspartato tetrairon tetrasulfide natural A protein modification that effectively converts three L-cysteine residues, an L-aspartic acid residue and a four-iron four-sulfur cluster to tris-L-cysteinyl L-aspartato tetrairon tetrasulfide. 2- C, C, C, D tetra-mu3-sulfidotris(S-cysteinyliron)(O4-aspartatoiron) MOD:00291 iron-sulfur cluster containing modification metal or metal cluster coordinated L-aspartic acid residue metal or metal cluster coordinated L-cysteine residue