1gq8

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[[Image:1gq8.gif|left|200px]]<br /><applet load="1gq8" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1gq8.gif|left|200px]]
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caption="1gq8, resolution 1.75&Aring;" />
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'''PECTIN METHYLESTERASE FROM CARROT'''<br />
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{{Structure
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|PDB= 1gq8 |SIZE=350|CAPTION= <scene name='initialview01'>1gq8</scene>, resolution 1.75&Aring;
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|SITE= <scene name='pdbsite=AC2:Cac+A+502+Binding+Site'>AC2</scene>
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|LIGAND= <scene name='pdbligand=CAC:CACODYLATE ION'>CAC</scene>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Pectinesterase Pectinesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.11 3.1.1.11]
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|GENE=
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}}
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'''PECTIN METHYLESTERASE FROM CARROT'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1GQ8 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Daucus_carota Daucus carota] with <scene name='pdbligand=CAC:'>CAC</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Pectinesterase Pectinesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.11 3.1.1.11] Known structural/functional Site: <scene name='pdbsite=AC2:Cac+A+502+Binding+Site'>AC2</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GQ8 OCA].
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1GQ8 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Daucus_carota Daucus carota]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GQ8 OCA].
==Reference==
==Reference==
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Crystal structure of plant pectin methylesterase., Johansson K, El-Ahmad M, Friemann R, Jornvall H, Markovic O, Eklund H, FEBS Lett. 2002 Mar 13;514(2-3):243-9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11943159 11943159]
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Crystal structure of plant pectin methylesterase., Johansson K, El-Ahmad M, Friemann R, Jornvall H, Markovic O, Eklund H, FEBS Lett. 2002 Mar 13;514(2-3):243-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11943159 11943159]
[[Category: Daucus carota]]
[[Category: Daucus carota]]
[[Category: Pectinesterase]]
[[Category: Pectinesterase]]
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[[Category: pectin methylesterase]]
[[Category: pectin methylesterase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:52:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:26:29 2008''

Revision as of 09:26, 20 March 2008

Image:1gq8.gif


PDB ID 1gq8

Drag the structure with the mouse to rotate
, resolution 1.75Å
Sites:
Ligands:
Activity: Pectinesterase, with EC number 3.1.1.11
Coordinates: save as pdb, mmCIF, xml



PECTIN METHYLESTERASE FROM CARROT


Overview

Pectin is a principal component in the primary cell wall of plants. During cell development, pectin is modified by pectin methylesterases to give different properties to the cell wall. This report describes the first crystal structure of a plant pectin methylesterase. The beta-helical structure embodies a central cleft, lined by several aromatic residues, that has been deduced to be suitable for pectin binding. The active site is found at the center of this cleft where Asp157 is suggested to act as the nucleophile, Asp136 as an acid/base and Gln113/Gln135 to form an anion hole to stabilize the transition state.

About this Structure

1GQ8 is a Single protein structure of sequence from Daucus carota. Full crystallographic information is available from OCA.

Reference

Crystal structure of plant pectin methylesterase., Johansson K, El-Ahmad M, Friemann R, Jornvall H, Markovic O, Eklund H, FEBS Lett. 2002 Mar 13;514(2-3):243-9. PMID:11943159

Page seeded by OCA on Thu Mar 20 11:26:29 2008

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