Apoprotein heterogeneity increases spectral disorder and a step-wise modification of the B850 fluorescence peak position
dc.contributor.author | Ilioaia, Cristian | |
dc.contributor.author | Kruger, T.P.J. (Tjaart) | |
dc.contributor.author | Ilioaia, Oana | |
dc.contributor.author | Robert, Bruno | |
dc.contributor.author | Van Grondelle, Rienk | |
dc.contributor.author | Gall, Andrew | |
dc.date.accessioned | 2018-11-02T04:52:23Z | |
dc.date.issued | 2018-02 | |
dc.description.abstract | It has already been established that the quaternary structure of the main light-harvesting complex (LH2) from the photosynthetic bacterium Rhodopseudomonas palustris is a nonameric ‘ring’ of PucAB heterodimers and under low-light culturing conditions an increased diversity of PucB synthesis occurs. In this work, single molecule fluorescence emission studies show that different classes of LH2 ‘rings’ are present in “low-light” adapted cells and that an unknown chaperon process creates multiple sub-types of ‘rings’ with more conformational sub-states and configurations. This increase in spectral disorder significantly augments the cross-section for photon absorption and subsequent energy flow to the reaction centre trap when photon availability is a limiting factor. This work highlights yet another variant used by phototrophs to gather energy for cellular development. | en_ZA |
dc.description.department | Physics | en_ZA |
dc.description.embargo | 2019-02-01 | |
dc.description.librarian | hj2018 | en_ZA |
dc.description.sponsorship | The French Infrastructure for Integrated Structural Biology (FRISBI) ANR-10-INSB-05 (A.G, C.I., B.R); the European Research Council (ERC) through an Advanced Investigator Grant, contract no. 267333 (R.v.G., B.R.); the French Agence Nationale de la Recherch (ANR) through a Chaire d'excellence, ANR-07-CEX-009-01 (A.G., O.I.); the European Union (EU) FP6 MEST-CT-2004-008048 Marie Curie Early Stage Training Network via the Advanced Training in Laser Sciences project (T.P.J.K.); the EU Access to Research Infrastructures action of the Improving Human Potential Program, contract no. RII-CT-2003-506350 (A.G.); CEA-Eurotalents program, European Union contract no. PCOFUND-GA-2008-228664 (C.I.); TOP grant (700.58.305) from the Foundation of Chemical Sciences, part of the Netherlands Organization for Scientific Research (C.I. and R.v.G.). | en_ZA |
dc.description.uri | http://www.elsevier.com/locate/bbabio | en_ZA |
dc.identifier.citation | Ilioaia, C., Kruger, T.P.J., Ilioaia, O. et al. 2018, 'Apoprotein heterogeneity increases spectral disorder and a step-wise modification of the B850 fluorescence peak position', Biochimica et Biophysica Acta (BBA) - Bioenergetics, vol. 1859, no. 2, pp. 137-144. | en_ZA |
dc.identifier.issn | 0005-2728 | |
dc.identifier.other | 10.1016/j.bbabio.2017.11.003 | |
dc.identifier.uri | http://hdl.handle.net/2263/67127 | |
dc.language.iso | en | en_ZA |
dc.publisher | Elsevier | en_ZA |
dc.rights | © 2017 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Biochimica et Biophysica Acta - Bioenergetics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Biochimica et Biophysica Acta - Bioenergetics, vol. 1859, no. 2, pp. 137-144, 2018. doi : 10.1016/j.bbabio.2017.11.003. | en_ZA |
dc.subject | Light-harvesting complex (LH2) | en_ZA |
dc.subject | Purple bacteria | en_ZA |
dc.subject | Single molecule spectroscopy | en_ZA |
dc.subject | Photosynthesis | en_ZA |
dc.subject | Low temperature | en_ZA |
dc.subject | Bacteriochlorophyll (Bchl) | en_ZA |
dc.subject | Rhodopseudomonas palustris | en_ZA |
dc.subject | Rhodobacter sphaeroides | en_ZA |
dc.subject | Pigment organization | en_ZA |
dc.title | Apoprotein heterogeneity increases spectral disorder and a step-wise modification of the B850 fluorescence peak position | en_ZA |
dc.type | Postprint Article | en_ZA |
Files
License bundle
1 - 1 of 1
Loading...
- Name:
- license.txt
- Size:
- 1.75 KB
- Format:
- Item-specific license agreed upon to submission
- Description: