Nitrogenase: Difference between revisions
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<StructureSection load="1N2C" size=" | <StructureSection load="1N2C" size="350" color="white" caption="Nitrogenase complex: α (grey and green) and β (pink and yellow) chains, nitrogenase iron protein ( purple,cyan, red and gold), showing Fe-Mo-S cluster complex with ADP, adipic acid, AlF4, Ca+2 and Mg+2 ions [[1n2c]]"> | ||
'''Nitrogenase''' (Nase) is an enzyme that fixes atmospheric nitrogen (N<sub>2</sub>) into ammonia. Though abundantly present in the atmosphere, most organisms cannot utilize N<sub>2</sub> directly, and must instead take it in through other forms, like ammonia or nitrate. The triple bond in N<sub>2</sub> is highly resistant to changes in oxidation state, and nitrogenases, found only in nitrogen-fixing bacteria, are the only proteins capable of reducing N<sub>2</sub> to ammonia. | '''Nitrogenase''' (Nase) is an enzyme that fixes atmospheric nitrogen (N<sub>2</sub>) into ammonia. Though abundantly present in the atmosphere, most organisms cannot utilize N<sub>2</sub> directly, and must instead take it in through other forms, like ammonia or nitrate. The triple bond in N<sub>2</sub> is highly resistant to changes in oxidation state, and nitrogenases, found only in nitrogen-fixing bacteria, are the only proteins capable of reducing N<sub>2</sub> to ammonia. | ||
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**[[4wes]], [[4wn9]], [[4wna]] - CpNase α+β subunit [CFe7MoS9 Fe8S7 Fe2]<br /> | **[[4wes]], [[4wn9]], [[4wna]] - CpNase α+β subunit [CFe7MoS9 Fe8S7 Fe2]<br /> | ||
**[[2afh]], [[1m1y]], [[1g20]] - AvNase α+β subunit + iron protein 1 [Fe4S4 Fe7MoS9 Fe8S7]<br /> | **[[2afh]], [[1m1y]], [[1g20]] - AvNase α+β subunit + iron protein 1 [Fe4S4 Fe7MoS9 Fe8S7]<br /> | ||
**[[2afi]], [[ | **[[2afi]], [[4wzb]], [[1m34]], [[1g21]] - AvNase α+β subunit + iron protein 1 [Fe4S4 Fe7MoS9 Fe8S7] + nucleotide<br /> | ||
**[[1n2c]] - AvNase α+β subunit + iron protein 1 [Fe4S4 Fe7MoS9 Fe8S7] + AlF4<br /> | **[[1n2c]] - AvNase α+β subunit + iron protein 1 [Fe4S4 Fe7MoS9 Fe8S7] + AlF4<br /> | ||