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化学模拟生物固氮——Ⅺ 固氮酶铁钼辅基模拟物的生物活性
Authors
张凤章
张美环
+6 more
曾定
林国栋
许志文
许良树
陈家璠
黄河清
Publication date
28 August 1980
Publisher
Abstract
据固氮酶厦门模型Ⅱ合成的固氮酶铁钼辅基模拟物与缺陷型棕色固氮菌uw-45提取液重组后,在完全的酶促反应条件下,具有明显的生物催化活性,其还原乙炔为乙烯的转化数通常在3—6(分~(-1))之间,相当于天然铁钼辅基活性的1—2%左右;还原分子氮为氨的转化数在1.5—3(分~(-1))左右,可用普通微量氨扩散法和Nessler比色法检出。重组模拟物的乙炔转化数与氮转化数之比值符合于棕色固氮菌活性固氮酶相应的转化数之比。经柠檬酸盐处理后,以氯为外配位基的模拟物的重组活性可显著提高
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Last time updated on 16/06/2016