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Title: Comparison of reaction centers from Rhodobacter sphaeroides and rhodopseudomonas viridis: Overall archistecture and protein-pigment interactions

Abstract

Photosynthetic reaction centers (RCs) from the photosynthetic bacteria Rhodobacter sphaeroides and Rhodopseudomonas viridis are protein complexes closely related in both structure and function. The structure of the Rps. viridis RC was used to determine the structure of the RC from Rb. sphaeroides. Small but meaningful differences between the positions of the helices and the cofactors in the two complexes were identified. The distances between helices A{sub L} adn A{sub M}, between B{sub L} and B{sub M}, and between bacteriopheophytins BP{sub L} and BP{sub M} are significantly shorter in Rps. viridis than they are in Rb. sphaeroides RCs. There are a number of differences in the amino acid residues that surround the cofactors; some of these residues form hydrogen bonds with the cofactors. Differences in chemical properties of the two RCs.

Authors:
; ; ; ;  [1]
  1. (Argonne National Lab., IL (United States))
Publication Date:
OSTI Identifier:
5139099
Alternate Identifier(s):
OSTI ID: 5139099
Resource Type:
Journal Article
Resource Relation:
Journal Name: Biochemistry; (United States); Journal Volume: 30:22
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PHOTOSYNTHETIC REACTION CENTERS; MOLECULAR STRUCTURE; AMINO ACID SEQUENCE; CHEMICAL PROPERTIES; PHOTOSYNTHETIC BACTERIA; RHODOPSEUDOMONAS; BACTERIA; MICROORGANISMS 140505* -- Solar Energy Conversion-- Photochemical, Photobiological, & Thermochemical Conversion-- (1980-)

Citation Formats

Elkabbani, Ossama, Chang, Chonghwan, Tiede, D., Norris, J., and Schiffer, M.. Comparison of reaction centers from Rhodobacter sphaeroides and rhodopseudomonas viridis: Overall archistecture and protein-pigment interactions. United States: N. p., 1991. Web. doi:10.1021/bi00236a006.
Elkabbani, Ossama, Chang, Chonghwan, Tiede, D., Norris, J., & Schiffer, M.. Comparison of reaction centers from Rhodobacter sphaeroides and rhodopseudomonas viridis: Overall archistecture and protein-pigment interactions. United States. doi:10.1021/bi00236a006.
Elkabbani, Ossama, Chang, Chonghwan, Tiede, D., Norris, J., and Schiffer, M.. Tue . "Comparison of reaction centers from Rhodobacter sphaeroides and rhodopseudomonas viridis: Overall archistecture and protein-pigment interactions". United States. doi:10.1021/bi00236a006.
@article{osti_5139099,
title = {Comparison of reaction centers from Rhodobacter sphaeroides and rhodopseudomonas viridis: Overall archistecture and protein-pigment interactions},
author = {Elkabbani, Ossama and Chang, Chonghwan and Tiede, D. and Norris, J. and Schiffer, M.},
abstractNote = {Photosynthetic reaction centers (RCs) from the photosynthetic bacteria Rhodobacter sphaeroides and Rhodopseudomonas viridis are protein complexes closely related in both structure and function. The structure of the Rps. viridis RC was used to determine the structure of the RC from Rb. sphaeroides. Small but meaningful differences between the positions of the helices and the cofactors in the two complexes were identified. The distances between helices A{sub L} adn A{sub M}, between B{sub L} and B{sub M}, and between bacteriopheophytins BP{sub L} and BP{sub M} are significantly shorter in Rps. viridis than they are in Rb. sphaeroides RCs. There are a number of differences in the amino acid residues that surround the cofactors; some of these residues form hydrogen bonds with the cofactors. Differences in chemical properties of the two RCs.},
doi = {10.1021/bi00236a006},
journal = {Biochemistry; (United States)},
number = ,
volume = 30:22,
place = {United States},
year = {Tue Jun 04 00:00:00 EDT 1991},
month = {Tue Jun 04 00:00:00 EDT 1991}
}