棕色固氮菌Nif-突变体中铁钼辅因子的合成
Iron-molybdenum cofactor synthesis in Azotobacter vinelandii Nif- mutants.
作者信息
Imperial J, Shah V K, Ugalde R A, Ludden P W, Brill W J
出版信息
J Bacteriol. 1987 Apr;169(4):1784-6. doi: 10.1128/jb.169.4.1784-1786.1987.
Abstract
Nif- mutants of Azotobacter vinelandii defective in dinitrogenase activity synthesized iron-molybdenum cofactor (FeMo-co) and accumulated it in two protein-bound forms: inactive dinitrogenase and a possible intermediate involved in the FeMo-co biosynthetic pathway. FeMo-co from both these proteins could activate apo-dinitrogenase from FeMo-co-deficient mutants.
摘要
维涅兰德固氮菌中缺乏固氮酶活性的Nif-突变体合成了铁钼辅因子（FeMo-co），并以两种蛋白质结合形式积累：无活性的固氮酶和FeMo-co生物合成途径中可能的中间体。来自这两种蛋白质的FeMo-co都可以激活FeMo-co缺陷型突变体中的脱辅基固氮酶。
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