GLUTAMATE 5-KINASE FROM ESCHERICHIA COLI COMPLEXED WITH GLUTAMYL-5-PHOSPHATE AND PYROGLUTAMIC ACID 2J5V TRANSFERASE, PROLINE BIOSYNTHESIS, GAMMA GLUTAMYL KINASE, AMINO-ACID BIOSYNTHESIS, GLUTAMATE KINASE, KINASE, FEEDBACK REGULATION, GLUTAMATE 5-KINASE, PUA DOMAIN, AMINO ACID KINASE, GLUTAMATE, GLUTAMYL PHOSPHATE, GAMMA GLUTAMYL PHOSPHATE, PROLINE