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9y81 is a 2 chain structure with sequence from Chlamydia pneumoniae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
SYE_CHLPN Catalyzes the attachment of glutamate to tRNA(Glu) in a two-step reaction: glutamate is first activated by ATP to form Glu-AMP and then transferred to the acceptor end of tRNA(Glu).