高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (5): 760.

• 论文 • 上一篇    下一篇

N2键合在固氮酶M簇笼内的一个可能证据

黄静伟1, 陈灿和2, 张凤章2, 林种玉1, 张鸿图1, 万惠霖1   

  1. 1. 厦门大学化学系, 固体表面物理化学国家重点实脸室, 厦门 361005;
    2. 厦门大学生物系, 厦门 361005
  • 收稿日期:1995-04-08 出版日期:1996-05-24 发布日期:1996-05-24
  • 通讯作者: 黄静伟,男,30岁,博士,讲师.
  • 作者简介:黄静伟,男,30岁,博士,讲师.
  • 基金资助:

    国家基础性研究重大关键项目

A Proof for N2-binding Inside M-cluster Cage of Nitrogenase

HUANG Jing-Wei1, CHEN Can-He2, ZHANG Feng-Zhang2, LIN Zhong-Yu1, ZHANG Hong-Tu1, WAN Hui-Lin1   

  1. 1. Department of Chemistry, State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen University, Xiamen 361005;
    2. Department of Biology, Xiamen University, Xiamen 361005
  • Received:1995-04-08 Online:1996-05-24 Published:1996-05-24

摘要: 研究了重水固氮酶体系中N2对C2H2的还原活性和立体化学产物的影响,发现N2的存在不仅抑制了C2H2的还原活性,而且提高了产物乙烯中反式1,2-二氘代乙烯的相对含量,为证实N2在固氮酶M簇合物笼内的还原氢化提供了一个有力的证据。

关键词: N2键合位, M簇合物, C2H2还原活性, 立体选择性

Abstract: The experiments that the reductive deuteration and products-selectivity of C2H2 are affected by N2 in D2O-nitgrogenase have been done.It is found that the C2H2 reductive activities decreased ca.80.7% and 89.3%,respectively,with mixtures of C2H2and N2 in the ratios of 1;108.3 and 1;216.7(volume ratio),as compared with ca.42.6% and 74.2% observed with C2H2 in argon(1;65 and 1;108.3,volume ratio) in the absence of N2;ca.3.19% and 4.95% trans-2-didutero ethene were observed form FTIRspectra of the ethenes-1,2-d2 obtained, respectively,with mixtures of C2H2 and N2 in the ratios of1;108.3 and 1;216.7(volume ratio).The results give a strong proof for the conclusion in which N2 binds inside the cage of M-cluster.

Key words: N2-bonding site, M-cluster, C2H2 reductive activity, Stereo-selectivity

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