Literature DB >> 1879543

Probing the secondary quinone (QB) environment in photosynthetic bacterial reaction centers by light-induced FTIR difference spectroscopy.

J Breton1, C Berthomieu, D L Thibodeau, E Nabedryk.   

Abstract

The photoreduction of the secondary electron acceptor, QB, has been characterized by light-induced Fourier transform infrared difference spectroscopy of Rb. sphaeroides and Rp. viridis reaction centers. The reaction centers were supplemented with ubiquinone (UQ10 or UQ0). The QB- state was generated either by continuous illumination at very low intensity or by single flash in the presence of redox compounds which rapidly reduce the photooxidized primary electron donor P+. This approach yields spectra free from P and P+ contributions making possible the study of the microenvironment of QB and QB-. Assignments are proposed for the C...O vibration of QB- and tentatively for the C = O and C = C vibrations of QB.

Entities:  

Mesh：

Substances：

Year:  1991        PMID： 1879543     DOI： 10.1016/0014-5793(91)81014-y

Source DB:  PubMed          Journal:  FEBS Lett        ISSN： 0014-5793            Impact factor:   4.124


  5 in total

1.  Tribute in memory of Jacques Breton (1942-2018).

Authors:  Paul Mathis; Eliane Nabedryk; André Verméglio
Journal:  Photosynth Res       Date:  2019-02-02       Impact factor: 3.573

2.  Calculated coupling of electron and proton transfer in the photosynthetic reaction center of Rhodopseudomonas viridis.

Authors:  C R Lancaster; H Michel; B Honig; M R Gunner
Journal:  Biophys J       Date:  1996-06       Impact factor: 4.033

3.  Investigation of ubiquinol formation in isolated photosynthetic reaction centers by rapid-scan Fourier transform IR spectroscopy.

Authors:  Alberto Mezzetti; Winfried Leibl
Journal:  Eur Biophys J       Date:  2005-05-21       Impact factor: 1.733

4.  Identification of FTIR bands due to internal water molecules around the quinone binding sites in the reaction center from Rhodobacter sphaeroides.

Authors:  Tatsuya Iwata; Mark L Paddock; Melvin Y Okamura; Hideki Kandori
Journal:  Biochemistry       Date:  2009-02-17       Impact factor: 3.162

5.  Asymmetric binding of the 1- and 4-C=O groups of QA in Rhodobacter sphaeroides R26 reaction centres monitored by Fourier transform infra-red spectroscopy using site-specific isotopically labelled ubiquinone-10.

Authors:  R Brudler; H J de Groot; W B van Liemt; W F Steggerda; R Esmeijer; P Gast; A J Hoff; J Lugtenburg; K Gerwert
Journal:  EMBO J       Date:  1994-12-01       Impact factor: 11.598
  5 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.