Fasciclin domain proteins are present in Nostoc symbionts of lichens

被引:30
作者
Paulsrud, P [1 ]
Lindblad, P [1 ]
机构
[1] Uppsala Univ, Evolutionary Biol Ctr, Dept Physiol Bot, SE-75236 Uppsala, Sweden
关键词
D O I
10.1128/AEM.68.4.2036-2039.2002
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Differences in the soluble protein fraction between the freshly isolated cyanobiont of lichen Peltigera membranacea, the corresponding free-living strain, and Nostoc punctiforme were analyzed. One protein, which was among the most prominent proteins of the freshly isolated cyanobiont, was expressed at a lower level in the corresponding free-living strain and was not detected at all on the two-dimensional gels of N. punctiforme. This protein was partially sequenced, and the corresponding open reading frame (ORF) in the N. punctiforme genome was identified. This ORF contains a fasciclin domain typical of a class of surface-associated proteins involved in cell adhesion. Similar fasciclin motif-containing genes have previously been shown to be symbiotically induced in other symbiotic systems.
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页码:2036 / 2039
页数:4
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