Active transport of ferric schizokinen in Anabaena sp
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چکیده
منابع مشابه
Active transport of ferric schizokinen in Anabaena sp.
The cyanobacterium Anabaena sp. strain ATCC 27898 was found to utilize the siderophore schizokinen to accumulate iron from the environment. This organism had previously been shown to produce schizokinen under low-iron conditions, and we observed that the iron-transport capability is also increased in response to iron limitation. Uptake activity was specific for ferric schizokinen displayed kine...
متن کاملAlr0397 is an outer membrane transporter for the siderophore schizokinen in Anabaena sp. strain PCC 7120.
Iron uptake in proteobacteria by TonB-dependent outer membrane transporters represents a well-explored subject. In contrast, the same process has been scarcely investigated in cyanobacteria. The heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120 is known to secrete the siderophore schizokinen, but its transport system has remained unidentified. Inspection of the genome of strain PCC...
متن کاملThe conformational stability and thermodynamics of Fur A (ferric uptake regulator) from Anabaena sp. PCC 7119.
Fur (ferric uptake regulator) is a key bacterial protein that regulates iron acquisition and its storage, and modulates the expression of genes involved in the response to different environmental stresses. Although the protein is involved in several regulation mechanisms, and members of the Fur family have been identified in pathogen organisms, the stability and thermodynamic characterization o...
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15 صفحه اولExpression of ferredoxin-NADP+ reductase in heterocysts from Anabaena sp.
The expression of ferredoxin-NADP+ reductase (FNR) from Anabaena sp. PCC 7119 in heterocysts and vegetative cells has been quantified. Specific reductase activity in heterocysts was approximately 10 times higher than in vegetative cells, corresponding to the increased FNR protein content. This was confirmed by immunoquantification of the FNR protein from whole filaments of Anabaena sp. PCC 7120...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1982
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.151.1.288-294.1982