TY - JOUR
T1 - The three-dimensional structures of bacterial reaction centers
AU - Olson, T. L.
AU - Williams, Joann
AU - Allen, James
N1 - Funding Information:
Acknowledgments This work was supported by the Grant CHE 1158552 from the National Science Foundation.
PY - 2014/5
Y1 - 2014/5
N2 - This review presents a broad overview of the research that enabled the structure determination of the bacterial reaction centers from Blastochloris viridis and Rhodobacter sphaeroides, with a focus on the contributions from Duysens, Clayton, and Feher. Early experiments performed in the laboratory of Duysens and others demonstrated the utility of spectroscopic techniques and the presence of photosynthetic complexes in both oxygenic and anoxygenic photosynthesis. The laboratories of Clayton and Feher led efforts to isolate and characterize the bacterial reaction centers. The availability of well-characterized preparations of pure and stable reaction centers allowed the crystallization and subsequent determination of the structures using X-ray diffraction. The three-dimensional structures of reaction centers revealed an overall arrangement of two symmetrical branches of cofactors surrounded by transmembrane helices from the L and M subunits, which also are related by the same twofold symmetry axis. The structure has served as a framework to address several issues concerning bacterial photosynthesis, including the directionality of electron transfer, the properties of the reaction center-cytochrome c 2 complex, and the coupling of proton and electron transfer. Together, these research efforts laid the foundation for ongoing efforts to address an outstanding question in oxygenic photosynthesis, namely the molecular mechanism of water oxidation.
AB - This review presents a broad overview of the research that enabled the structure determination of the bacterial reaction centers from Blastochloris viridis and Rhodobacter sphaeroides, with a focus on the contributions from Duysens, Clayton, and Feher. Early experiments performed in the laboratory of Duysens and others demonstrated the utility of spectroscopic techniques and the presence of photosynthetic complexes in both oxygenic and anoxygenic photosynthesis. The laboratories of Clayton and Feher led efforts to isolate and characterize the bacterial reaction centers. The availability of well-characterized preparations of pure and stable reaction centers allowed the crystallization and subsequent determination of the structures using X-ray diffraction. The three-dimensional structures of reaction centers revealed an overall arrangement of two symmetrical branches of cofactors surrounded by transmembrane helices from the L and M subunits, which also are related by the same twofold symmetry axis. The structure has served as a framework to address several issues concerning bacterial photosynthesis, including the directionality of electron transfer, the properties of the reaction center-cytochrome c 2 complex, and the coupling of proton and electron transfer. Together, these research efforts laid the foundation for ongoing efforts to address an outstanding question in oxygenic photosynthesis, namely the molecular mechanism of water oxidation.
KW - Blastochloris viridis
KW - Membrane protein
KW - Protein purification
KW - Rhodobacter sphaeroides
KW - Spectroscopy
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=84898830509&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898830509&partnerID=8YFLogxK
U2 - 10.1007/s11120-013-9821-6
DO - 10.1007/s11120-013-9821-6
M3 - Review article
C2 - 23575738
AN - SCOPUS:84898830509
SN - 0166-8595
VL - 120
SP - 87
EP - 98
JO - Photosynthesis research
JF - Photosynthesis research
IS - 1-2
ER -