1d9e: Difference between revisions

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[[Image:1d9e.jpg|left|200px]]


<!--
==STRUCTURE OF E. COLI KDO8P SYNTHASE==
The line below this paragraph, containing "STRUCTURE_1d9e", creates the "Structure Box" on the page.
<StructureSection load='1d9e' size='340' side='right'caption='[[1d9e]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1d9e]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D9E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1D9E FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
{{STRUCTURE_1d9e| PDB=1d9e |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1d9e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d9e OCA], [https://pdbe.org/1d9e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1d9e RCSB], [https://www.ebi.ac.uk/pdbsum/1d9e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1d9e ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/KDSA_ECOLI KDSA_ECOLI] Synthesis of KDO 8-P which is required for lipid A maturation and cellular growth.[HAMAP-Rule:MF_00056]
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d9/1d9e_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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/main_output.php?pdb_ID=1d9e ConSurf].
<div style="clear:both"></div>


'''STRUCTURE OF E. COLI KDO8P SYNTHASE'''
==See Also==
 
*[[Kdo-8-phosphate synthase|Kdo-8-phosphate synthase]]
 
__TOC__
==Overview==
</StructureSection>
3-deoxy-D-manno-octulosonate 8-phosphate (KDO8P) synthase catalyzes the condensation of phosphoenolpyruvate (PEP) with arabinose 5-phosphate (A5P) to form KDO8P and inorganic phosphate. KDO8P is the phosphorylated precursor of 3-deoxy-D-manno-octulosonate, an essential sugar of the lipopolysaccharide of Gram-negative bacteria. The crystal structure of the Escherichia coli KDO8P synthase has been determined by multiple wavelength anomalous diffraction and the model has been refined to 2.4 A (R-factor, 19.9%; R-free, 23.9%). KDO8P synthase is a homotetramer in which each monomer has the fold of a (beta/alpha)(8) barrel. On the basis of the features of the active site, PEP and A5P are predicted to bind with their phosphate moieties 13 A apart such that KDO8P synthesis would proceed via a linear intermediate. A reaction similar to KDO8P synthesis, the condensation of phosphoenolpyruvate, and erythrose 4-phosphate to form 3-deoxy-D-arabino-heptulosonate 7-phosphate (DAH7P), is catalyzed by DAH7P synthase. In the active site of DAH7P synthase the two substrates PEP and erythrose 4-phosphate appear to bind in a configuration similar to that proposed for PEP and A5P in the active site of KDO8P synthase. This observation suggests that KDO8P synthase and DAH7P synthase evolved from a common ancestor and that they adopt the same catalytic strategy.
 
==About this Structure==
1D9E 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=1D9E OCA].
 
==Reference==
Structure and mechanism of 3-deoxy-D-manno-octulosonate 8-phosphate synthase., Radaev S, Dastidar P, Patel M, Woodard RW, Gatti DL, J Biol Chem. 2000 Mar 31;275(13):9476-84. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10734095 10734095]
[[Category: 3-deoxy-8-phosphooctulonate synthase]]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Dastidar, P.]]
[[Category: Dastidar P]]
[[Category: Gatti, D L.]]
[[Category: Gatti DL]]
[[Category: Patel, M.]]
[[Category: Patel M]]
[[Category: Radaev, S.]]
[[Category: Radaev S]]
[[Category: Woodard, R W.]]
[[Category: Woodard RW]]
[[Category: A5p]]
[[Category: Dah7p]]
[[Category: Kdo]]
[[Category: Kdo8p]]
[[Category: Pep]]
[[Category: Tim barrel]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 13:35:45 2008''

Latest revision as of 06:50, 7 February 2024

STRUCTURE OF E. COLI KDO8P SYNTHASE

1d9e, resolution 2.40Å

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