Nitrogenase: Difference between revisions
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N<sub>2</sub> + 8 H<sup>+</sup> + 16 MgATP + 8 e<sup>-</sup> → 2NH<sub>3</sub> + H<sub>2</sub> + 16 MgADP + 16 P<sub>i</sub> | N<sub>2</sub> + 8 H<sup>+</sup> + 16 MgATP + 8 e<sup>-</sup> → 2NH<sub>3</sub> + H<sub>2</sub> + 16 MgADP + 16 P<sub>i</sub> | ||
Two different proteins comprise the nitrogenase complex. The '''FeMo protein''' binds substrate and reduces H<sup>+</sup> and N<sub>2</sub> to H<sub>2</sub> and ammonia, while the '''Fe protein''' receives electrons from ferredoxin, hydrolyzes ATP, and reduces the FeMo protein. To the right is shown a crystal structure (PDB entry [[1n2c]]<ref>PMID:9163420</ref>) where two complexes of FeMo protein bound to Fe protein were crystallized together. Click here to see only <scene name='Sandbox_10/1n2c_single_complex/2'>one complex</scene>. | Two different proteins comprise the nitrogenase complex. The '''FeMo protein''' or '''nitrogenase Mo-Fe protein''' binds substrate and reduces H<sup>+</sup> and N<sub>2</sub> to H<sub>2</sub> and ammonia, while the '''Fe protein''' or '''nitrogenase iron protein 1''' receives electrons from ferredoxin, hydrolyzes ATP, and reduces the FeMo protein. To the right is shown a crystal structure (PDB entry [[1n2c]]<ref>PMID:9163420</ref>) where two complexes of FeMo protein bound to Fe protein were crystallized together. Click here to see only <scene name='Sandbox_10/1n2c_single_complex/2'>one complex</scene>. | ||
