Anti-correlation of the emission from different red pools in photosystem I

M. Brecht; V. Radics; J. B. Nieder; R. Bittl

doi:10.1117/12.809303

24 February 2009 Anti-correlation of the emission from different red pools in photosystem I

M. Brecht, V. Radics, J. B. Nieder, R. Bittl

Proceedings Volume 7185, Single Molecule Spectroscopy and Imaging II; 718506 (2009) https://doi.org/10.1117/12.809303
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

Electron and energy transfer in proteins are key processes in bioenergetics. Their understanding on a molecular level can serve as an important guideline for the design of nanoscale assemblies. Energy transfer between pigment molecules requires a match between their transition energies for energy emission and absorption. The tuning of these pigment energies in proteins is achieved by pigment-protein interactions. In general, these interactions are regarded as static properties determined by the three-dimensional structure of pigment-protein complexes. Employing single-molecule fluorescence spectroscopy we demonstrate that protein dynamics, even at cryogenic temperatures, significantly influences the transition energy of pigments and, as a consequence, modulates energy transfer pathways. This variability of excitation energy transfer pathways introduced by protein dynamics might be important for the extreme robustness of photosystems.

Citation Download Citation

M. Brecht, V. Radics, J. B. Nieder, and R. Bittl "Anti-correlation of the emission from different red pools in photosystem I", Proc. SPIE 7185, Single Molecule Spectroscopy and Imaging II, 718506 (24 February 2009); https://doi.org/10.1117/12.809303

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available