label: phosphopantothenate--cysteine ligase activity
label_lc: phosphopantothenate--cysteine ligase activity
description: "Catalysis of the reaction: CTP + (R)-4'-phosphopantothenate + L-cysteine = CMP + diphosphate + (R)-4'-phosphopantothenoyl-L-cysteine. Cysteine can be replaced by some of its derivatives."