ID 6.3.2.5 DE Phosphopantothenate--cysteine ligase. AN Phosphopantothenoylcysteine synthetase. CA CTP + (R)-4'-phosphopantothenate + L-cysteine = CMP + PPi + CA N-((R)-4'-phosphopantothenoyl)-L-cysteine. CC -!- Cysteine can be replaced by some of its derivatives. DR O51752, COABC_BORBU; P0ABQ1, COABC_ECOL6; P0ABQ0, COABC_ECOLI; DR P44953, COABC_HAEIN; Q58323, COABC_METJA; P67734, COABC_MYCBO; DR P67733, COABC_MYCTU; P73881, COABC_SYNY3; Q9KVD1, COABC_VIBCH; DR Q5E8M6, COABC_VIBF1; Q87T89, COABC_VIBPA; Q8DDX8, COABC_VIBVU; DR Q7MPS9, COABC_VIBVY; Q9HAB8, PPCS_HUMAN ; Q8VDG5, PPCS_MOUSE ; //