PURIFICATION AND PROPERTIES OF GLUTAMINE SYNTHETASES FROM THE CYANOBACTERIA SYNECHOCYSTIS SP STRAIN PCC-6803 AND CALOTHRIX SP STRAIN PCC-7601

被引：51

作者：

MERIDA, A

LEURENTOP, L

CANDAU, P

FLORENCIO, FJ

机构：

[1] UNIV SEVILLA,CSIC,INST BIOQUIM VEGETAL & FOTOSINTESIS,DEPT BIOQUIM VEGETAL & BIOL MOLEC,E-41080 SEVILLE,SPAIN

[2] UNIV INSTELLING ANTWERP,DEPT BIOL,B-2610 WILRIJK,BELGIUM

来源：

JOURNAL OF BACTERIOLOGY | 1990年 / 172卷 / 08期

关键词：

D O I：

10.1128/jb.172.8.4732-4735.1990

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Glutamine synthetases (GSs) from two cyanobacteria, one unicellular (Synechocystis sp. strain PCC 6803) and the other filamentous (Calothrix sp. strain PCC 7601 [Fremyella diplosiphon]), were purified to homogeneity. The biosynthetic activities of both enzymes were strongly inhibited by ADP, indicating that the energy charge of the cell might regulate the GS activity. Both cyanobacteria exhibited an ammonium-mediated repression of GS synthesis. In addition, the Synechocystis sp. showed an inactivation of GS promoted by ammonium that had not been demonstrated previously in cyanobacteria.

引用

页码：4732 / 4735

页数：4

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