1m3u

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[[Image:1m3u.gif|left|200px]]<br /><applet load="1m3u" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1m3u.gif|left|200px]]
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caption="1m3u, resolution 1.800&Aring;" />
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'''Crystal Structure of Ketopantoate Hydroxymethyltransferase complexed the Product Ketopantoate'''<br />
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{{Structure
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|PDB= 1m3u |SIZE=350|CAPTION= <scene name='initialview01'>1m3u</scene>, resolution 1.800&Aring;
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|SITE=
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|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=KPL:KETOPANTOATE'>KPL</scene>
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|ACTIVITY= [http://en.wikipedia.org/wiki/3-methyl-2-oxobutanoate_hydroxymethyltransferase 3-methyl-2-oxobutanoate hydroxymethyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.2.11 2.1.2.11]
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|GENE= PANB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])
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}}
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'''Crystal Structure of Ketopantoate Hydroxymethyltransferase complexed the Product Ketopantoate'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1M3U is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=KPL:'>KPL</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/3-methyl-2-oxobutanoate_hydroxymethyltransferase 3-methyl-2-oxobutanoate hydroxymethyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.2.11 2.1.2.11] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M3U OCA].
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1M3U is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M3U OCA].
==Reference==
==Reference==
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Structure of E. coli ketopantoate hydroxymethyl transferase complexed with ketopantoate and Mg2+, solved by locating 160 selenomethionine sites., von Delft F, Inoue T, Saldanha SA, Ottenhof HH, Schmitzberger F, Birch LM, Dhanaraj V, Witty M, Smith AG, Blundell TL, Abell C, Structure. 2003 Aug;11(8):985-96. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=12906829 12906829]
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Structure of E. coli ketopantoate hydroxymethyl transferase complexed with ketopantoate and Mg2+, solved by locating 160 selenomethionine sites., von Delft F, Inoue T, Saldanha SA, Ottenhof HH, Schmitzberger F, Birch LM, Dhanaraj V, Witty M, Smith AG, Blundell TL, Abell C, Structure. 2003 Aug;11(8):985-96. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12906829 12906829]
[[Category: 3-methyl-2-oxobutanoate hydroxymethyltransferase]]
[[Category: 3-methyl-2-oxobutanoate hydroxymethyltransferase]]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: tim-barrel]]
[[Category: tim-barrel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:51:08 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:38:27 2008''

Revision as of 10:38, 20 March 2008

Image:1m3u.gif


PDB ID 1m3u

Drag the structure with the mouse to rotate
, resolution 1.800Å
Ligands: and
Gene: PANB (Escherichia coli)
Activity: 3-methyl-2-oxobutanoate hydroxymethyltransferase, with EC number 2.1.2.11
Coordinates: save as pdb, mmCIF, xml



Crystal Structure of Ketopantoate Hydroxymethyltransferase complexed the Product Ketopantoate


Overview

We report the crystal structure of E. coli ketopantoate hydroxymethyltransferase (KPHMT) at 1.9 A resolution, in complex with its product, ketopantoate. KPHMT catalyzes the first step in the biosynthesis of pantothenate (vitamin B(5)), the precursor of coenzyme A and the acyl carrier protein cofactor. The structure of the decameric enzyme was solved by multiwavelength anomalous dispersion to locate 160 selenomethionine sites and phase 560 kDa of protein, making it the largest structure solved by this approach. KPHMT adopts the (betaalpha)(8) barrel fold and is a member of the phosphoenolpyruvate/pyruvate superfamily. The active site contains a ketopantoate bidentately coordinated to Mg(2+). Similar binding is likely for the substrate, alpha-ketoisovalerate, orienting the C3 for deprotonation.

About this Structure

1M3U is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Structure of E. coli ketopantoate hydroxymethyl transferase complexed with ketopantoate and Mg2+, solved by locating 160 selenomethionine sites., von Delft F, Inoue T, Saldanha SA, Ottenhof HH, Schmitzberger F, Birch LM, Dhanaraj V, Witty M, Smith AG, Blundell TL, Abell C, Structure. 2003 Aug;11(8):985-96. PMID:12906829

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