1yst

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{{STRUCTURE_1yst| PDB=1yst | SCENE= }}
{{STRUCTURE_1yst| PDB=1yst | SCENE= }}
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'''STRUCTURE OF THE PHOTOCHEMICAL REACTION CENTER OF A SPHEROIDENE CONTAINING PURPLE BACTERIUM, RHODOBACTER SPHAEROIDES Y, AT 3 ANGSTROMS RESOLUTION'''
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===STRUCTURE OF THE PHOTOCHEMICAL REACTION CENTER OF A SPHEROIDENE CONTAINING PURPLE BACTERIUM, RHODOBACTER SPHAEROIDES Y, AT 3 ANGSTROMS RESOLUTION===
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==Overview==
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The crystal structure of the photochemical reaction centre from Rhodobacter sphaeroides Y, a carotenoid-containing wild-type purple bacterium, has been determined at 3 A resolution. This membrane complex consists of three subunits (281, 307 and 260 residues, respectively) and ten cofactors. It was crystallized in presence of beta-D-octylglucoside. The crystals are orthorhombic with unit-cell dimensions, a = 143.7, b = 139.8, c = 78.7 A, space group P2(1)2(1)2(1) with four molecules in the unit cell. Refinement of the structure by X-PLOR and manual reconstructions yielded an R value of 22.1% for 19630 reflections between 7 and 3 A. The secondary structure is highly homologous to those determined for Rhodopseudomonas viridis (Protein Data Bank entry 1PRC) and Rhodobacter sphaeroides R26 (Protein Data Bank entry 4RCR) reaction centres. In the latter two structures one Fe(2+) ion located between the two quinones is coordinated by four histidines and one glutamic acid. In the Rhodobacter sphaeroides Y structure, Mn(2+) occupies the same position with identical ligands and geometry. The carotenoid conformation which is a non-planar 15-15'-cis spheroidene molecule in our structure differs from the 13-14-cis 2,4-dihydroneusporene in the Rhodopseudomonas viridis structure.
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{{ABSTRACT_PUBMED_15299304}}
==About this Structure==
==About this Structure==
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[[Category: Reiss-Husson, F.]]
[[Category: Reiss-Husson, F.]]
[[Category: Photosynthetic reaction center]]
[[Category: Photosynthetic reaction center]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:53:12 2008''

Revision as of 14:53, 28 July 2008

Image:1yst.png

Template:STRUCTURE 1yst

STRUCTURE OF THE PHOTOCHEMICAL REACTION CENTER OF A SPHEROIDENE CONTAINING PURPLE BACTERIUM, RHODOBACTER SPHAEROIDES Y, AT 3 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 15299304

About this Structure

1YST is a Protein complex structure of sequences from Rhodobacter sphaeroides. Full crystallographic information is available from OCA.

Reference

Structure of the photochemical reaction centre of a spheroidene-containing purple-bacterium, Rhodobacter sphaeroides Y, at 3 A resolution., Arnoux B, Gaucher JF, Ducruix A, Reiss-Husson F, Acta Crystallogr D Biol Crystallogr. 1995 May 1;51(Pt 3):368-79. PMID:15299304

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