6ASV:
reference: Crystal structure of E. coli PRPP synthetase., Zhou W, Tsai A, Dattmore DA, Stives DP, Chitrakar I, D'alessandro AM, Patil S, Hicks KA, French JB, BMC Struct Biol. 2019 Jan 15;19(1):1. doi: 10.1186/s12900-019-0100-4. PMID: 30646888

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