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8tfb is a 12 chain structure with sequence from Methanosarcina mazei. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
GLNA1_METMA Probably involved in nitrogen metabolism via ammonium assimilation. Catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia.[1]
References
↑ Ehlers C, Weidenbach K, Veit K, Forchhammer K, Schmitz RA. Unique mechanistic features of post-translational regulation of glutamine synthetase activity in Methanosarcina mazei strain Gö1 in response to nitrogen availability. Mol Microbiol. 2005 Mar;55(6):1841-54. PMID:15752204 doi:10.1111/j.1365-2958.2005.04511.x