1rb0

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[[Image:1rb0.png|left|200px]]
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==CRYSTAL STRUCTURE OF A BINARY COMPLEX OF E. COLI HPPK WITH 6-HYDROXYMETHYLPTERIN-DIPHOSPHATE AT 1.35 ANGSTROM RESOLUTION==
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<StructureSection load='1rb0' size='340' side='right' caption='[[1rb0]], [[Resolution|resolution]] 1.35&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1rb0]] is a 1 chain structure with 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=1RB0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RB0 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HH2:6-HYDROXYMETHYLPTERIN-DIPHOSPHATE'>HH2</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hka|1hka]], [[1eqm|1eqm]], [[1eq0|1eq0]], [[1q0n|1q0n]], [[1ex8|1ex8]], [[1cbk|1cbk]], [[1dy3|1dy3]], [[1f9y|1f9y]], [[1f9h|1f9h]], [[1g4c|1g4c]], [[1hq2|1hq2]], [[1im6|1im6]], [[1kbr|1kbr]], [[1rao|1rao]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FOLK, B0142 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</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/2-amino-4-hydroxy-6-hydroxymethyldihydropteridine_diphosphokinase 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.6.3 2.7.6.3] </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=1rb0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rb0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1rb0 RCSB], [http://www.ebi.ac.uk/pdbsum/1rb0 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/rb/1rb0_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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6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) catalyzes the Mg(2+)-dependent pyrophosphoryl transfer from ATP to 6-hydroxymethyl-7,8-dihydropterin (HP). The reaction follows a bi-bi mechanism with ATP as the first substrate and AMP and HP pyrophosphate (HPPP) as the two products. HPPK is a key enzyme in the folate biosynthetic pathway and is essential for microorganisms but absent from mammals. For the HPPK-catalyzed pyrophosphoryl transfer, a reaction coordinate is constructed on the basis of the thermodynamic and transient kinetic data we reported previously, and the reaction trajectory is mapped out with five three-dimensional structures of the enzyme at various liganded states. The five structures are apo-HPPK (ligand-free enzyme), HPPK.MgATP(analog) (binary complex of HPPK with its first substrate) and HPPK.MgATP(analog).HP (ternary complex of HPPK with both substrates), which we reported previously, and HPPK.AMP.HPPP (ternary complex of HPPK with both product molecules) and HPPK.HPPP (binary complex of HPPK with one product), which we present in this study.
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{{STRUCTURE_1rb0| PDB=1rb0 | SCENE= }}
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Reaction trajectory of pyrophosphoryl transfer catalyzed by 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase.,Blaszczyk J, Shi G, Li Y, Yan H, Ji X Structure. 2004 Mar;12(3):467-75. PMID:15016362<ref>PMID:15016362</ref>
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===CRYSTAL STRUCTURE OF A BINARY COMPLEX OF E. COLI HPPK WITH 6-HYDROXYMETHYLPTERIN-DIPHOSPHATE AT 1.35 ANGSTROM RESOLUTION===
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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_15016362}}
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==See Also==
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*[[6-hydroxymethyl-7%2C8-dihydropterin pyrophosphokinase|6-hydroxymethyl-7%2C8-dihydropterin pyrophosphokinase]]
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==About this Structure==
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== References ==
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[[1rb0]] is a 1 chain structure with 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=1RB0 OCA].
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<references/>
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__TOC__
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==Reference==
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</StructureSection>
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<ref group="xtra">PMID:015016362</ref><references group="xtra"/>
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[[Category: 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase]]
[[Category: 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase]]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]

Revision as of 16:35, 29 September 2014

CRYSTAL STRUCTURE OF A BINARY COMPLEX OF E. COLI HPPK WITH 6-HYDROXYMETHYLPTERIN-DIPHOSPHATE AT 1.35 ANGSTROM RESOLUTION

1rb0, resolution 1.35Å

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