Spectral Diffusion Induced by Proton Dynamics in Pigment—Protein Complexes.
The fluorescence emission of individual photosystem I complexes from Synechocystis PCC 6803 in protonated and deuterated buffer shows zero-phonon lines as well as broad intensity distributions. The number and the line width of the zero phonon lines depend strongly on the solvent (H[sub2]O/D[sub2]O)....
| Publicado en: | Journal of the American Chemical Society Vol. 130; no. 51; pp. 17487 - 17494 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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American Chemical Society
12/24/2008
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=35930694&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 35930694 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 12/24/2008 vid: 130 iid: 51 pid: 997 pub: American Chemical Society artinfo: ui: 35930694 10.1021/ja806216p ppf: 17487 ppct: 7 formats: tig: atl: Spectral Diffusion Induced by Proton Dynamics in Pigment—Protein Complexes. aug: au: Brecht, Marc Studier, Hauke Radics, Volker Nieder, Jana B. Bittl, Robert affil: Fachbereich Physik, Freie Uniuersitat Berlin, Arnimalle 14, 14195 Berlin, Germany su: Diffusion processes Buffer solutions Fluorescence Phonons Solvents Protons Spectrum analysis sug: subj: Diffusion processes Buffer solutions Fluorescence Phonons Solvents Protons Spectrum analysis ab: The fluorescence emission of individual photosystem I complexes from Synechocystis PCC 6803 in protonated and deuterated buffer shows zero-phonon lines as well as broad intensity distributions. The number and the line width of the zero phonon lines depend strongly on the solvent (H[sub2]O/D[sub2]O). The spectral diffusion rate of the whole fluorescence emission from photosystem I is significantly reduced upon deuteration of the solvent. This leads to a substantial increase of well- resolved zero-phonon lines. Since the chlorophyll a chromophores lack exchangeable protons, these observed changes in the spectral diffusion have to be assigned to exchangeable protons at the amino acids and structural water molecules in the chromophore binding pocket. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2008 holdings: @attributes: islocal: N |
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