1gq8

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[[Image:1gq8.gif|left|200px]]
[[Image:1gq8.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1gq8 |SIZE=350|CAPTION= <scene name='initialview01'>1gq8</scene>, resolution 1.75&Aring;
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The line below this paragraph, containing "STRUCTURE_1gq8", creates the "Structure Box" on the page.
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|SITE= <scene name='pdbsite=AC2:Cac+A+502+Binding+Site'>AC2</scene>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=CAC:CACODYLATE+ION'>CAC</scene>, <scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[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] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE=
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-->
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|DOMAIN=
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{{STRUCTURE_1gq8| PDB=1gq8 | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gq8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gq8 OCA], [http://www.ebi.ac.uk/pdbsum/1gq8 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1gq8 RCSB]</span>
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}}
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'''PECTIN METHYLESTERASE FROM CARROT'''
'''PECTIN METHYLESTERASE FROM CARROT'''
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[[Category: Jornvall, H.]]
[[Category: Jornvall, H.]]
[[Category: Markovic, O.]]
[[Category: Markovic, O.]]
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[[Category: carboxylic ester hydrolase]]
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[[Category: Carboxylic ester hydrolase]]
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[[Category: pectin methylesterase]]
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[[Category: Pectin methylesterase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 17:53:03 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:49:10 2008''
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Revision as of 14:53, 2 May 2008

Image:1gq8.gif

Template:STRUCTURE 1gq8

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 Fri May 2 17:53:03 2008

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