2csm: Difference between revisions

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[[Image:2csm.jpg|left|200px]]


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==TYR-BOUND T-STATE OF YEAST CHORISMATE MUTASE==
The line below this paragraph, containing "STRUCTURE_2csm", creates the "Structure Box" on the page.
<StructureSection load='2csm' size='340' side='right'caption='[[2csm]], [[Resolution|resolution]] 2.80&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'>[[2csm]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CSM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CSM 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]] 2.8&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=TYR:TYROSINE'>TYR</scene></td></tr>
{{STRUCTURE_2csm| PDB=2csm |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2csm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2csm OCA], [https://pdbe.org/2csm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2csm RCSB], [https://www.ebi.ac.uk/pdbsum/2csm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2csm ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CHMU_YEAST CHMU_YEAST]
== 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/cs/2csm_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=2csm ConSurf].
<div style="clear:both"></div>


'''TYR-BOUND T-STATE OF YEAST CHORISMATE MUTASE'''
==See Also==
 
*[[3D structures of chorismate mutase|3D structures of chorismate mutase]]
 
__TOC__
==Overview==
</StructureSection>
The crystal structure of the tyrosine-bound T state of allosteric yeast Saccharomyces cerevisiae chorismate mutase was solved by molecular replacement at a resolution of 2.8 angstroms using a monomer of the R-state structure as the search model. The allosteric inhibitor tyrosine was found to bind in the T state at the same binding site as the allosteric activator tryptophan binds in the R state, thus defining one regulatory binding site for each monomer. Activation by tryptophan is caused by the larger steric size of its side chain, thereby pushing apart the allosteric domain of one monomer and helix H8 of the catalytic domain of the other monomer. Inhibition is caused by polar contacts of tyrosine with Arg-75 and Arg-76 of one monomer and with Gly-141, Ser-142, and Thr-145 of the other monomer, thereby bringing the allosteric and catalytic domains closer together. The allosteric transition includes an 8 degree rotation of each of the two catalytic domains relative to the allosteric domains of each monomer (domain closure). Alternatively, this transition can be described as a 15 degree rotation of the catalytic domains of the dimer relative to each other.
[[Category: Large Structures]]
 
==About this Structure==
2CSM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CSM OCA].
 
==Reference==
Crystal structure of the T state of allosteric yeast chorismate mutase and comparison with the R state., Strater N, Hakansson K, Schnappauf G, Braus G, Lipscomb WN, Proc Natl Acad Sci U S A. 1996 Apr 16;93(8):3330-4. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8622937 8622937]
[[Category: Chorismate mutase]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Single protein]]
[[Category: Hakansson K]]
[[Category: Hakansson, K.]]
[[Category: Lipscomb WN]]
[[Category: Lipscomb, W N.]]
[[Category: Straeter N]]
[[Category: Straeter, N.]]
[[Category: Allosteric protein]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 22:57:44 2008''

Latest revision as of 12:18, 14 February 2024

TYR-BOUND T-STATE OF YEAST CHORISMATE MUTASETYR-BOUND T-STATE OF YEAST CHORISMATE MUTASE

Structural highlights

2csm is a 1 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.8Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CHMU_YEAST

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

2csm, resolution 2.80Å

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