1hki

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[[Image:1hki.png|left|200px]]
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==CRYSTAL STRUCTURE OF HUMAN CHITINASE IN COMPLEX WITH GLUCOALLOSAMIDIN B==
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<StructureSection load='1hki' size='340' side='right' caption='[[1hki]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1hki]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HKI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1HKI FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALI:METHYL+N-ACETYL+ALLOSAMINE'>ALI</scene>, <scene name='pdbligand=NA1:METHYL+N-ACETYL+ALLOSAMINE'>NA1</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1guv|1guv]], [[1hkj|1hkj]], [[1hkk|1hkk]], [[1hkm|1hkm]], [[1lg1|1lg1]], [[1lg2|1lg2]]</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Chitinase Chitinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.14 3.2.1.14] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1hki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hki OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1hki RCSB], [http://www.ebi.ac.uk/pdbsum/1hki PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hk/1hki_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The pseudotrisaccharide allosamidin is a potent family 18 chitinase inhibitor with demonstrated biological activity against insects, fungi, and the Plasmodium falciparum life cycle. The synthesis and biological properties of several derivatives have been reported. The structural interactions of allosamidin with several family 18 chitinases have been determined by x-ray crystallography previously. Here, a high resolution structure of chitotriosidase, the human macrophage chitinase, in complex with allosamidin is presented. In addition, complexes of the allosamidin derivatives demethylallosamidin, methylallosamidin, and glucoallosamidin B are described, together with their inhibitory properties. Similar to other chitinases, inhibition of the human chitinase by allosamidin derivatives lacking a methyl group is 10-fold stronger, and smaller effects are observed for the methyl and C3 epimer derivatives. The structures explain the effects on inhibition in terms of altered hydrogen bonding and hydrophobic interactions, together with displaced water molecules. The data reported here represent a first step toward structure-based design of specific allosamidin derivatives.
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{{STRUCTURE_1hki| PDB=1hki | SCENE= }}
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Crystal structures of allosamidin derivatives in complex with human macrophage chitinase.,Rao FV, Houston DR, Boot RG, Aerts JM, Sakuda S, van Aalten DM J Biol Chem. 2003 May 30;278(22):20110-6. Epub 2003 Mar 14. PMID:12639956<ref>PMID:12639956</ref>
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===CRYSTAL STRUCTURE OF HUMAN CHITINASE IN COMPLEX WITH GLUCOALLOSAMIDIN B===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_12639956}}
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==About this Structure==
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[[1hki]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HKI OCA].
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==See Also==
==See Also==
*[[Chitinase|Chitinase]]
*[[Chitinase|Chitinase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:012639956</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Chitinase]]
[[Category: Chitinase]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]

Revision as of 10:39, 28 September 2014

CRYSTAL STRUCTURE OF HUMAN CHITINASE IN COMPLEX WITH GLUCOALLOSAMIDIN B

1hki, resolution 2.55Å

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