Crystal Structure of Mycobacterium Tuberculosis Pantothenate Synthetase at 1.6 Ang resolution in complex with fragment compound 5-methoxyindole, sulfate and glycerolCrystal Structure of Mycobacterium Tuberculosis Pantothenate Synthetase at 1.6 Ang resolution in complex with fragment compound 5-methoxyindole, sulfate and glycerol