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1990 (2)
1Author    I. Sinning, J. Koepke, B. Schiller, H. MichelRequires cookie*
 Title    First Glance on the Three-Dimensional Structure of the Photosynthetic Reaction Center from a Herbicide-Resistant Rhodopseudomonas viridis Mutant  
 Abstract    A first model o f the three-dimensional structure o f the photosynthetic reaction center o f the mutant T1 (SerL223 —* ■ Ala, ArgL217 —* His) from Rhodopseudom onas viridis, resistant to ­ ward the triazine herbicide terbutryn (2-m ethylthio-4-ethylam ino-6-/-butylam ino-s-triazine), has been developed from X-ray data measured to a resolution o f 2.5 Ä. The secondary qui­ none, Q B, which in T 1 binds better than in the wild type, is present in the crystals. Both substi­ tuted residues are clearly visible in the difference fourier map. The replacement o f these two residues in the Q B site causes only minor changes in the overall structure o f the protein. 
  Reference    Z. Naturforsch. 45c, 455 (1990); received December 9 1989 
  Published    1990 
  Keywords    Three-Dimensional Structure, Herbicide Resistance, Terbutryn, Photosynthetic Reaction Center 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0455.pdf 
 Identifier    ZNC-1990-45c-0455 
 Volume    45 
2Author    G. Ewald, C. Wiessner, H. MichelRequires cookie*
 Title    Sequence Analysis of Four Atrazine-Resistant Mutants from Rhodopseudomonas viridis  
 Abstract    Four atrazine-resistant mutants from the purple bacterium Rhodopseudom onas viridis were isolated. Sequence analysis revealed three different mutant strains carrying mutations in the herbicide-binding pocket: i) M AV 2: L 212-G lu —* Lys, ii) M AV 3: L216-Phe —» Ser and iii) M AV 4 = MAV 5: L217-Arg His, L220-Val Leu. Except M AV 3 all Rps. viridis mutants are different from those selected by their resistance towards the closely related triazine terbutryn. 
  Reference    Z. Naturforsch. 45c, 459 (1990); received December 9 1989 
  Published    1990 
  Keywords    Herbicide-Resistant Mutants, Atrazine, Photosynthetic Reaction Center, Sequence Analysis 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0459.pdf 
 Identifier    ZNC-1990-45c-0459 
 Volume    45