Ontology highlight
ABSTRACT:
SUBMITTER: Tezcan FA
PROVIDER: S-EPMC4304452 | biostudies-literature | 2015 Jan
REPOSITORIES: biostudies-literature
Tezcan F Akif FA Kaiser Jens T JT Howard James B JB Rees Douglas C DC
Journal of the American Chemical Society 20141223 1
The roles of ATP hydrolysis in electron-transfer (ET) reactions of the nitrogenase catalytic cycle remain obscure. Here, we present a new structure of a nitrogenase complex crystallized with MgADP and MgAMPPCP, an ATP analogue. In this structure the two nucleotides are bound asymmetrically by the Fe-protein subunits connected to the two different MoFe-protein subunits. This binding mode suggests that ATP hydrolysis and phosphate release may proceed by a stepwise mechanism. Through the associated ...[more]