Main Reaction: L-glutamate + L-cysteine + ATP >> γ-glutamyl-cysteine

Reference: PubMed ID: 24610661
Authors: Pratt C, Nguyen S, Phillips MA
Title: Genetic validation of Trypanosoma brucei glutathione synthetase as an essential enzyme.
Published: 2014 May

L-glutamate + L-cysteine + ATP --> γ-glutamyl-cysteine