6GST:
reference: First-sphere and second-sphere electrostatic effects in the active site of a class mu gluthathione transferase., Xiao G, Liu S, Ji X, Johnson WW, Chen J, Parsons JF, Stevens WJ, Gilliland GL, Armstrong RN, Biochemistry 1996 Apr 16;35(15):4753-65. PMID: 8664265

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