2GB5 CRYSTAL STRUCTURE OF NADH PYROPHOSPHATASE (EC 3.6.1.22) (1790429) FROM ESCHERICHIA COLI K12 AT 2.30 A RESOLUTION HYDROLASE, 1790429, NADH PYROPHOSPHATASE (EC 3.6.1.22), STRUCTURAL GENOMICS, PSI, PROTEIN STRUCTURE INITIATIVE, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG