Reduced nicotinamide nucleotides can function as reductants to nitrogenase . 还原的烟酰胺核苷酸对固态酶可以起还原剂的作用。
2.
They clearly demonstrated that nitrogenase could catalyze the reduction of acetylene as well as n2 他们明确地证明，固氮酶能催化乙炔以及N2的还原。
3.
They clearly demonstrated that nitrogenase could catalyze the reduction of acetylene as well as n2 他们明确地证明，固氮酶能催化乙炔以及n2的还原。
4.
Hormonal regulation of plant growth regulator br and shk - 6 on soybean biomass and nitrogenase activity 6对大豆生物产量和根瘤固氮活性的激素调控研究
5.
First , the morphology , physiology of seed , biological traits , geographic distribution , ecological and community characteristics , karyotypes , nitrogenase activity of root nodules and chemical constituents of e . mollis were reviewed , respectively 本文对翅果油树的形态特征、种子生理生化、生态学特征、染色体数目、群落生态、生物学特性、固氮生物学以及矿物质和化学成分等方面研究进行了综述。
6.
This n2 and h + binding and reduced model also developed our early proposed two - site h2 evolution model for nitrogenase : site i , n2 - dependent h2 evolution site , is provided by the central six - fe region of femoco , which is also provided the n2 , c2h2 , co binding site 结合的高柠橡酸传入，其反应式为: zh + + 2e ’ ， hz ，此反应不受co抑制; 。心inl90一高柠稼酸一m 。是一条通向femoco的重要的电子传递途径。
7.
2 . proceedings of the reseaches on the novel nitrogenase mnfe protein and crfe protein several new batches of mnfe protein and crfe protein were prepared . their substrate reduction activities have been determined by the complementation with uw45 fe protein 新型固氮酶mnfe蛋白和crfe蛋白的特性与结晶研究在已有的工作基础上，分离纯化了几批mnfe蛋白和crfe蛋白，并用部分纯的ugh fe蛋白进行活性互补，分别测定了mnfe蛋白和crfe蛋白的底物还原活性。
8.
The paper reviews home and overseas research works on exhumation and use of nitrogen - fixing resource , genetics engineering of nitrogen fixation , and biochemistry of nitrogenase and chemical modeling of biological nitrogen fixation , and describe the prospect of biological nitrogen - fixing research 本文从固氮资源的发掘和利用、固氮的遗传工程以及固氮酶生物化学和化学模拟生物固氮三方面对国内外的研究进展进行了全面的阐述，并对生物固氮研究的前景进行了展望。
9.
Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments . the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose , sucrose , malic acid , mannitol ) , propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum , at a ph range of 4 to 8 . 5 , at a saline concentration range of 0 . 01 % to 1 . 5 % ; low nlv " concentration had little effect on its nitrogenase activity . ara could also be detected when it grow in the culture media with 5mmol / l ntv " W12菌株对环境因子的适应性研究：无氮培养条件下，测定温度、碳源、酸碱度、渗透压对w12生长及固氮能力的影响，结果表明，在15 - 40下均能生长并表达固氮酶活性，其最适生长及固氮的温度为25 - 35 ；能利用葡萄糖、蔗糖、苹果酸、甘露醇等多种碳源生长并固氮，当培养基中同时存在蔗糖和苹果酸时，细菌生长和固氮活性最强；在偏酸和偏碱的条件下( ph4 . 5 - 8 . 5 )均能保持较强的生长势和较高的固氮酶活性，并能通过调节自身代谢平衡并适应环境的酸、碱性变化，使培养液趋于中性：能耐受较高的渗透压，培养液中卜、 5 naci浓度对其生长和固氮酶活性影响不大，当naci浓度升至2时，菌株的生长势及固氮酶活性才有所下降：低浓度的铰对其固氮酶活性影响不大，在0
10.
Pcr amplification using 2 degenerate primers for nitrogenase fe protein gene was performed with chromosomal dna isolated from the 29 isolates . the result suggested that a nifh amplicon of 323 nucleotides was detected in 7 isolates and the 7 isolates are c4 c5 g1 g2 , w5 t1 and t7 . these pcr amplified fragments were cloned , and sequenced 首先利用芽孢杆菌中芽孢的抗热性将土壤溶液在100沸水中煮10 - 15分钟，然后用选择性无氮培养基进行初筛得到29株菌落形态不同的菌株；接着用固氮酶结构基因nifh的特异性引物对这29株菌进行pcr扩增，结果表明其中7个菌株具有nifh基因，这7个菌株的编号依次为： c4 、 c5 、 g1 、 g2 、 w5 、 t1和t7 。
