  The Pyoverdins Of Pseudomonas Syringae And Pseudomonas Cichorii; ; Wathelet, Bernard  et alin Zeitschrift Fur Naturforschung C-A Journal of Biosciences (2004), 59(9-10), Detailed reference viewed: 13 (2 ULg)A 5,6-Dihydro-Isopyoverdin From Azomonas Macrocytogenes; ; et al in Zeitschrift Fur Naturforschung C-A Journal of Biosciences (1997), 52(11-12), Detailed reference viewed: 8 (2 ULg)Bacterial Constituents .71. Absolute Configuration Of The Isopyoverdin Chromophore; ; et al in Zeitschrift Fur Naturforschung C-A Journal of Biosciences (1997), 52(7-8), Detailed reference viewed: 3 (1 ULg)OPTICAL MULTICHANNEL ANALYSIS OF PROTOCHLOROPHYLLIDE PHOTOTRANSFORMATION IN DETERGENT-SOLUBILIZED ETIOPLAST MEMBRANES OF WHEATFranck, Fabrice ; ; et alin Zeitschrift Fur Naturforschung C-A Journal Of Biosciences (1994), 49(1-2), 125-131 Extracts of wheat etioplast membranes obtained after treatment with 7 mM n-octyl-beta-D-glucopyranoside (OG), n-dodecyl-beta-D-maltoside (DM) or Triton X-100 contained the three spectral forms of Pchlide ... [more ▼] Extracts of wheat etioplast membranes obtained after treatment with 7 mM n-octyl-beta-D-glucopyranoside (OG), n-dodecyl-beta-D-maltoside (DM) or Triton X-100 contained the three spectral forms of Pchlide (the photoactive Pchlide(638) and Pchlide(638) and the inactive Pchlide(650)) in various relative amounds. The OG extract had a Pchlide composition close to that of the intact membranes whereas the DM extract was enriched in Pchlide(638) and the Triton extract was enriched in Pchlide(630). Measurements of the kinetics of phototransformation and of time-resolved absorbance spectra during phototransformation in continuous Light shows that the inactive Pchlide(630) is in fact slowly transformed to Chlide, especially in the Triton extract where this form is more abundant. Addition of NADPH favours the phototransformation of Pchlide(630) and the slow regeneration of Pchlide(638) and Pchlide(650) from Pchlide(630) in darkness after illumination. No such regeneration was however observed in the Triton extract. NADPH had only slight effects on the Chlide shift towards shorter wavelengths after phototransformation in solubilized membranes. [less ▲] Detailed reference viewed: 18 (1 ULg)PREFERENTIAL DEACTIVATION OF THE S(3) STATE OF THE WATER-OXIDIZING COMPLEX, FAVORED BY PLASTOQUINONE REDUCTION IN BARLEY CHLOROPLASTSFranck, Fabrice ; in Zeitschrift Fur Naturforschung C-A Journal Of Biosciences (1993), 48(7-8), 603-608 The flash patterns of oxygen evolution after pre-illumination by continuous light or by a flash sequence were compared in etiochloroplasts and mature chloroplasts of barley. In both types of plastids sub ... [more ▼] The flash patterns of oxygen evolution after pre-illumination by continuous light or by a flash sequence were compared in etiochloroplasts and mature chloroplasts of barley. In both types of plastids sub-saturating continuous illumination of some seconds strongly affected the S3 but not the S2 state of the oxygen-evolving complex. This result is ascribed to efficient charge recombination of S3 with the acceptor side of photosystem II, favoured by partial reduction of the plastoquinone pool. The increase of S3 observed in the presence of dichlorophenolindophenol in etiochloroplasts confirms this interpretation. These observations strengthen the recent hypothesis of a conformational change during the transition from S2 to S3 recently proposed to interpret the different susceptibility of these two states to hydroxylamine and hydrazine (F. Frank and G. H. Schmid, Biochim. Biophys. Acta 977, 215-218 (1989); J. Messinger, U. Wacker, and G. Renger, Biochemistry 30,7852-7862 (1991)). [less ▲] Detailed reference viewed: 4 (2 ULg) |
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