Affiliation:
1. Department of Physiological Botany, Evolutionary Biology Centre, Uppsala University, SE-752 36 Uppsala, Sweden
Abstract
ABSTRACT
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.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
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