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'Sequence Analysis' in keywords Facet   section ZfN Section C:Volume 047  [X]
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1992 (1)
1Author    I. Perewoska, C. Vernotte, M. Picaud, C. AstierRequires cookie*
 Title    Mutations in the Subunit of Photosystem II and Resistance to the Phenol Type Herbicide Ioxynil in Synechocystis PCC 6714 and 6803  
 Abstract    Several herbicides block the photosystem II electron transfer because they compete with QB, the second stable electron acceptor o f photosystem II for binding to the D, subunit. We have previously isolated a mutant o f Synechocystis 6714 in which Asn is replaced by Thr at position 266 o f D, (G. Ajlani, I. Meyer, C. Vernotte, and Astier, FEBS Lett. 246, 2 0 7 -2 1 0 (1989)) and presenting resistance to ioxynil but not to D C M U . In this report we present selection, from this mutant, o f a double mutant with an additional substitution at position 264 (Ser by Ala). The sensitivity o f this mutant toward several herbicides is given and compared to those o f the mutants having only one substitution at 266 and one substitution at 264. It was also compared to a mutant o f Chlamydomonas having the same substitutions. This allows us to discuss the interaction o f various herbicides with the D , protein and to compare the herbicide binding niches o f Chlamydomonas and Synechocystis. 
  Reference    Z. Naturforsch. 47c, 580—5 (1992); received March 13 1992 
  Published    1992 
  Keywords    Cyanobacteria, Chlamydomonas, Herbicide-Resistant M utants, Photosynthesis, Sequence Analysis 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0580.pdf 
 Identifier    ZNC-1992-47c-0580 
 Volume    47