MYOGLOBIN IN A CYANOBACTERIUM

被引：97

作者：

POTTS, M

ANGELONI, SV

EBEL, RE

BASSAM, D

机构：

[1] Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg

来源：

SCIENCE | 1992年 / 256卷 / 5064期

关键词：

D O I：

10.1126/science.256.5064.1690

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Myoglobin was found in the nitrogen-fixing cyanobacterium Nostoc commune. This cyanobacterial myoglobin, referred to as cyanoglobin, was shown to be a soluble hemoprotein of 12.5 kilodaltons with an amino acid sequence that is related to that of myoglobins from two lower eukaryotes, the ciliated protozoa Paramecium caudatum and Tetrahymena pyriformis. Cyanoglobin is encoded by the glbNgene, which is positioned between nifU and nifH-two genes essential for nitrogen fixation-in the genome of Nostoc. Cyanoglobin was detected in Nostoc cells only when they were starved for nitrogen and incubated microaerobically.

引用

页码：1690 / 1692

页数：3

共 20 条

[1]

Bothe H., 1982, biology of cyanobacteria [edited by Carr, N.G.

[2]

Whitton, B.A.], P87

[3] MARINE OSCILLATORIA (TRICHODESMIUM) - EXPLANATION FOR AEROBIC NITROGEN-FIXATION WITHOUT HETEROCYSTS [J].