2e7z

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{{STRUCTURE_2e7z| PDB=2e7z | SCENE= }}
{{STRUCTURE_2e7z| PDB=2e7z | SCENE= }}
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'''Acetylene Hydratase from Pelobacter acetylenicus'''
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===Acetylene Hydratase from Pelobacter acetylenicus===
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==Overview==
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The tungsten-iron-sulfur enzyme acetylene hydratase stands out from its class because it catalyzes a nonredox reaction, the hydration of acetylene to acetaldehyde. Sequence comparisons group the protein into the dimethyl sulfoxide reductase family, and it contains a bis-molybdopterin guanine dinucleotide-ligated tungsten atom and a cubane-type [4Fe:4S] cluster. The crystal structure of acetylene hydratase at 1.26 A now shows that the tungsten center binds a water molecule that is activated by an adjacent aspartate residue, enabling it to attack acetylene bound in a distinct, hydrophobic pocket. This mechanism requires a strong shift of pK(a) of the aspartate, caused by a nearby low-potential [4Fe:4S] cluster. To access this previously unrecognized W-Asp active site, the protein evolved a new substrate channel distant from where it is found in other molybdenum and tungsten enzymes.
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The line below this paragraph, {{ABSTRACT_PUBMED_17360611}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 17360611 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17360611}}
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
Structure of the non-redox-active tungsten/[4Fe:4S] enzyme acetylene hydratase., Seiffert GB, Ullmann GM, Messerschmidt A, Schink B, Kroneck PM, Einsle O, Proc Natl Acad Sci U S A. 2007 Feb 27;104(9):3073-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17360611 17360611]
Structure of the non-redox-active tungsten/[4Fe:4S] enzyme acetylene hydratase., Seiffert GB, Ullmann GM, Messerschmidt A, Schink B, Kroneck PM, Einsle O, Proc Natl Acad Sci U S A. 2007 Feb 27;104(9):3073-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17360611 17360611]
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Crystallization and preliminary X-ray analysis of the tungsten-dependent acetylene hydratase from Pelobacter acetylenicus., Einsle O, Niessen H, Abt DJ, Seiffert G, Schink B, Huber R, Messerschmidt A, Kroneck PM, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Mar 1;61(Pt, 3):299-301. Epub 2005 Feb 12. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16511024 16511024]
[[Category: Deleted entry]]
[[Category: Deleted entry]]
[[Category: Pelobacter acetylenicus]]
[[Category: Pelobacter acetylenicus]]
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[[Category: Iron-sulfur-cluster]]
[[Category: Iron-sulfur-cluster]]
[[Category: Tungstoprotein]]
[[Category: Tungstoprotein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 02:06:23 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 09:34:31 2008''

Revision as of 06:34, 28 July 2008

Template:STRUCTURE 2e7z

Acetylene Hydratase from Pelobacter acetylenicus

Template:ABSTRACT PUBMED 17360611

About this Structure

2E7Z is a Single protein structure of sequence from Pelobacter acetylenicus. Full crystallographic information is available from OCA.

Reference

Structure of the non-redox-active tungsten/[4Fe:4S] enzyme acetylene hydratase., Seiffert GB, Ullmann GM, Messerschmidt A, Schink B, Kroneck PM, Einsle O, Proc Natl Acad Sci U S A. 2007 Feb 27;104(9):3073-7. PMID:17360611

Crystallization and preliminary X-ray analysis of the tungsten-dependent acetylene hydratase from Pelobacter acetylenicus., Einsle O, Niessen H, Abt DJ, Seiffert G, Schink B, Huber R, Messerschmidt A, Kroneck PM, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Mar 1;61(Pt, 3):299-301. Epub 2005 Feb 12. PMID:16511024

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