1fso: Difference between revisions

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


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==CRYSTAL STRUCTURE OF TRUNCATED HUMAN RHOGDI QUADRUPLE MUTANT==
The line below this paragraph, containing "STRUCTURE_1fso", creates the "Structure Box" on the page.
<StructureSection load='1fso' size='340' side='right'caption='[[1fso]], [[Resolution|resolution]] 2.00&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'>[[1fso]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FSO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FSO 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&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fso FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fso OCA], [https://pdbe.org/1fso PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fso RCSB], [https://www.ebi.ac.uk/pdbsum/1fso PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fso ProSAT]</span></td></tr>
{{STRUCTURE_1fso| PDB=1fso |  SCENE= }}
</table>
== Function ==
[https://www.uniprot.org/uniprot/GDIR1_HUMAN GDIR1_HUMAN] Regulates the GDP/GTP exchange reaction of the Rho proteins by inhibiting the dissociation of GDP from them, and the subsequent binding of GTP to them. In glioma cells, inhibits cell migration and invasion by mediating the signals of SEMA5A and PLXNB3 that lead to inactivation of RAC1 (By similarity).
== 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/fs/1fso_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=1fso ConSurf].
<div style="clear:both"></div>


'''CRYSTAL STRUCTURE OF TRUNCATED HUMAN RHOGDI QUADRUPLE MUTANT'''
==See Also==
 
*[[Guanine nucleotide dissociation inhibitor|Guanine nucleotide dissociation inhibitor]]
 
__TOC__
==Overview==
</StructureSection>
Crystallization is a unique process that occurs at the expense of entropy, including the conformational entropy of surface residues, which become ordered in crystal lattices during formation of crystal contacts. It could therefore be argued that epitopes free of amino acids with high conformational entropy are more thermodynamically favorable for crystal formation. For a protein recalcitrant to crystallization, mutation of such surface amino acids to residues with no conformational entropy might lead to enhancement of crystallization. This paper reports the results of experiments with an important cytosolic regulator of GTPases, human RhoGDI, in which lysine residues were systematically mutated to alanines. Single and multiple mutations were introduced into two different variants of RhoGDI, NDelta23 and NDelta66, in which the first 23 and 66 residues, respectively, were removed by recombinant methods. In total, 13 single and multiple mutants were prepared and assessed for crystallization and all were shown to crystallize using the Hampton Research Crystal Screens I and II, in contrast to wild-type NDelta23 and NDelta66 RhoGDI which did not crystallize. Four crystal structures were solved (the triple mutants NDelta23:K135,138,141A and NDelta66:K135,138,141A, and two single mutants NDelta66:K113A and NDelta66:K141A) and in three cases the crystal contacts of the new lattices were found precisely at the sites of mutations. These results support the notion that it is, in principle, possible to rationally design mutations which systematically enhance proteins' ability to crystallize.
 
==About this Structure==
1FSO is a [[Single protein]] structure of 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=1FSO OCA].
 
==Reference==
Protein crystallization by rational mutagenesis of surface residues: Lys to Ala mutations promote crystallization of RhoGDI., Longenecker KL, Garrard SM, Sheffield PJ, Derewenda ZS, Acta Crystallogr D Biol Crystallogr. 2001 May;57(Pt 5):679-88. Epub 2001, Apr 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11320308 11320308]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Derewenda, Z S.]]
[[Category: Derewenda ZS]]
[[Category: Garrard, S M.]]
[[Category: Garrard SM]]
[[Category: Longenecker, K L.]]
[[Category: Longenecker KL]]
[[Category: Sheffield, P J.]]
[[Category: Sheffield PJ]]
[[Category: Beta sandwich motif]]
[[Category: Gdp-dissociation inhibitor of rho gtpase]]
[[Category: Immunoglobulin fold]]
[[Category: Isoprenyl-binding domain]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 16:43:13 2008''

Latest revision as of 10:18, 7 February 2024

CRYSTAL STRUCTURE OF TRUNCATED HUMAN RHOGDI QUADRUPLE MUTANTCRYSTAL STRUCTURE OF TRUNCATED HUMAN RHOGDI QUADRUPLE MUTANT

Structural highlights

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

Function

GDIR1_HUMAN Regulates the GDP/GTP exchange reaction of the Rho proteins by inhibiting the dissociation of GDP from them, and the subsequent binding of GTP to them. In glioma cells, inhibits cell migration and invasion by mediating the signals of SEMA5A and PLXNB3 that lead to inactivation of RAC1 (By similarity).

Evolutionary Conservation

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

See Also

1fso, resolution 2.00Å

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