Role for hetC in the transition to a nondividing state during heterocyst differentiation in Anabaena sp.
Nitrogen-deprived filaments of wild-type or hetC Anabaena sp. produce respectively, at semiregular intervals, heterocysts and weakly fluorescent cells. Unlike heterocysts, the latter cells can divide and elongate, producing a pattern of spaced series of small cells. Because a hetR::gfp fusion is expressed most strongly in the small cells, we propose that these small cells represent a very early stage of heterocyst differentiation. hetC::gfp is expressed most strongly in proheterocysts and heterocysts.
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MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824-1312, USA.
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D018528:ATP-Binding Cassette Transporters / Q000235:genetics / Q000378:metabolism*; D017033:Anabaena / Q000166:cytology / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D001426:Bacterial Proteins; D005453:Fluorescence; D049452:Green Fluorescent Proteins; D008164:Luminescent Proteins / Q000235:genetics / Q000378:metabolism; D009154:Mutation; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism
D018528:ATP-Binding Cassette Transporters; D001426:Bacterial Proteins; C109191:HetC protein, Anabaena; D008164:Luminescent Proteins; D011993:Recombinant Fusion Proteins; D049452:Green Fluorescent Proteins