Two distinct ferredoxins are essential for nitrogen fixation by the iron nitr...

Nitrogenases are the only enzymes able to fix gaseous nitrogen into bioavailable ammonia and, hence, are essential for sustaining life. Catalysis by nitrogenases requires both a...固氮酶（Nitrogenases）是唯一能够将气态氮固定为可生物利用氨的酶类，因此对维持生命至关重要。固氮酶的催化作用同时需要……