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1qxn

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[[Image:1qxn.gif|left|200px]]
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{{Seed}}
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[[Image:1qxn.png|left|200px]]
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{{STRUCTURE_1qxn| PDB=1qxn | SCENE= }}
{{STRUCTURE_1qxn| PDB=1qxn | SCENE= }}
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'''Solution Structure of the 30 kDa Polysulfide-sulfur Transferase Homodimer from Wolinella Succinogenes'''
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===Solution Structure of the 30 kDa Polysulfide-sulfur Transferase Homodimer from Wolinella Succinogenes===
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==Overview==
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The periplasmic polysulfide-sulfur transferase (Sud) protein encoded by Wolinella succinogenes is involved in oxidative phosphorylation with polysulfide-sulfur as a terminal electron acceptor. The polysulfide-sulfur is covalently bound to the catalytic Cys residue of the Sud protein and transferred to the active site of the membranous polysulfide reductase. The solution structure of the homodimeric Sud protein has been determined using heteronuclear multidimensional NMR techniques. The structure is based on NOE-derived distance restraints, backbone hydrogen bonds, and torsion angle restraints as well as residual dipolar coupling restraints for a refinement of the relative orientation of the monomer units. The monomer structure consists of a five-stranded parallel beta-sheet enclosing a hydrophobic core, a two-stranded antiparallel beta-sheet, and six alpha-helices. The dimer fold is stabilized by hydrophobic residues and ion pairs found in the contact area between the two monomers. Similar to rhodanese enzymes, Sud catalyzes the transfer of the polysulfide-sulfur to the artificial acceptor cyanide. Despite their similar functions and active sites, the amino acid sequences and structures of these proteins are quite different.
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The line below this paragraph, {{ABSTRACT_PUBMED_14769017}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 14769017 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14769017}}
==About this Structure==
==About this Structure==
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1QXN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Wolinella_succinogenes Wolinella succinogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXN OCA].
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1QXN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Wolinella_succinogenes Wolinella succinogenes]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXN OCA].
==Reference==
==Reference==
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[[Category: Polysulfide-sulfur transferase]]
[[Category: Polysulfide-sulfur transferase]]
[[Category: Sud]]
[[Category: Sud]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:49:30 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 08:03:17 2008''

Revision as of 05:03, 29 July 2008

Image:1qxn.png

Template:STRUCTURE 1qxn

Solution Structure of the 30 kDa Polysulfide-sulfur Transferase Homodimer from Wolinella Succinogenes

Template:ABSTRACT PUBMED 14769017

About this Structure

1QXN is a Single protein structure of sequence from Wolinella succinogenes. Full experimental information is available from OCA.

Reference

Solution structure of the 30 kDa polysulfide-sulfur transferase homodimer from Wolinella succinogenes., Lin YJ, Dancea F, Lohr F, Klimmek O, Pfeiffer-Marek S, Nilges M, Wienk H, Kroger A, Ruterjans H, Biochemistry. 2004 Feb 17;43(6):1418-24. PMID:14769017

Page seeded by OCA on Tue Jul 29 08:03:17 2008

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