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Phylogeny and sequence analysis (A) Multiple sequence alignment of γ-glutamylcysteine synthetase of S. cerevisiae, H. sapiens, T. brucei,L. donovani, B. juncea and E. coli. Sequences were retrieved from Uniprot gene database with their Uniprot gene id given proceeding name in multiple sequence alignment. (B) Phylogenetic tree showing three different classes of Gcs.
