1w88

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[[Image:1w88.gif|left|200px]]<br /><applet load="1w88" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1w88.gif|left|200px]]
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caption="1w88, resolution 2.30&Aring;" />
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'''THE CRYSTAL STRUCTURE OF PYRUVATE DEHYDROGENASE E1(D180N, E183Q) BOUND TO THE PERIPHERAL SUBUNIT BINDING DOMAIN OF E2'''<br />
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{{Structure
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|PDB= 1w88 |SIZE=350|CAPTION= <scene name='initialview01'>1w88</scene>, resolution 2.30&Aring;
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|SITE= <scene name='pdbsite=AC1:Mg+Binding+Site+For+Chain+G'>AC1</scene>
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|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=TDP:THIAMIN DIPHOSPHATE'>TDP</scene>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Pyruvate_dehydrogenase_(acetyl-transferring) Pyruvate dehydrogenase (acetyl-transferring)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.4.1 1.2.4.1]
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|GENE=
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}}
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'''THE CRYSTAL STRUCTURE OF PYRUVATE DEHYDROGENASE E1(D180N, E183Q) BOUND TO THE PERIPHERAL SUBUNIT BINDING DOMAIN OF E2'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1W88 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus] with <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=TDP:'>TDP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Pyruvate_dehydrogenase_(acetyl-transferring) Pyruvate dehydrogenase (acetyl-transferring)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.4.1 1.2.4.1] Known structural/functional Site: <scene name='pdbsite=AC1:Mg+Binding+Site+For+Chain+G'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W88 OCA].
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1W88 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W88 OCA].
==Reference==
==Reference==
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A molecular switch and proton wire synchronize the active sites in thiamine enzymes., Frank RA, Titman CM, Pratap JV, Luisi BF, Perham RN, Science. 2004 Oct 29;306(5697):872-6. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15514159 15514159]
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A molecular switch and proton wire synchronize the active sites in thiamine enzymes., Frank RA, Titman CM, Pratap JV, Luisi BF, Perham RN, Science. 2004 Oct 29;306(5697):872-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15514159 15514159]
[[Category: Geobacillus stearothermophilus]]
[[Category: Geobacillus stearothermophilus]]
[[Category: Protein complex]]
[[Category: Protein complex]]
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[[Category: transferase]]
[[Category: transferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:41:30 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:53:29 2008''

Revision as of 12:53, 20 March 2008

Image:1w88.gif


PDB ID 1w88

Drag the structure with the mouse to rotate
, resolution 2.30Å
Sites:
Ligands: and
Activity: Pyruvate dehydrogenase (acetyl-transferring), with EC number 1.2.4.1
Coordinates: save as pdb, mmCIF, xml



THE CRYSTAL STRUCTURE OF PYRUVATE DEHYDROGENASE E1(D180N, E183Q) BOUND TO THE PERIPHERAL SUBUNIT BINDING DOMAIN OF E2


Overview

Thiamine diphosphate (ThDP) is used as a cofactor in many key metabolic enzymes. We present evidence that the ThDPs in the two active sites of the E1 (EC 1.2.4.1) component of the pyruvate dehydrogenase complex communicate over a distance of 20 angstroms by reversibly shuttling a proton through an acidic tunnel in the protein. This "proton wire" permits the co-factors to serve reciprocally as general acid/base in catalysis and to switch the conformation of crucial active-site peptide loops. This synchronizes the progression of chemical events and can account for the oligomeric organization, conformational asymmetry, and "ping-pong" kinetic properties of E1 and other thiamine-dependent enzymes.

About this Structure

1W88 is a Protein complex structure of sequences from Geobacillus stearothermophilus. Full crystallographic information is available from OCA.

Reference

A molecular switch and proton wire synchronize the active sites in thiamine enzymes., Frank RA, Titman CM, Pratap JV, Luisi BF, Perham RN, Science. 2004 Oct 29;306(5697):872-6. PMID:15514159

Page seeded by OCA on Thu Mar 20 14:53:29 2008

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