NITROGEN-FIXATION GENES INVOLVED IN THE BRADYRHIZOBIUM-JAPONICUM-SOYBEAN SYMBIOSIS

被引：41

作者：

HENNECKE, H

机构：

[1] Mikrobiologisches Institut, Eidgenössische Technische Hochschule, ETH-Zentrum, CH-8092 Zürich

来源：

FEBS LETTERS | 1990年 / 268卷 / 02期

关键词：

Bradyrhizobium japonicum; Gene regulation; Nitrogen fixation; Nitrogenase; Symbiosis;

D O I：

10.1016/0014-5793(90)81297-2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The symbiotic nitrogen fixation genes (nif, fix) of Bradyrhizobium japonicum, the root nodule endosymbiont of soybean, are organized in at least two separate chromosomal gene clusters. These genes code for proteins of the nitrogenase complex, for proteins involved in their assembly with cofactors and for putative electron transport functions. One gene, nif A, codes for a transcriptional regulatory protein that plays a central role in the control of expression of the other genes in response to the cellular oxygen status. Only at low partial pressures of O2 will the target promoters be activated by NifA. © 1990.

引用

页码：422 / 426

页数：5

共 34 条

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