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==Crystal Structure Analysis of a Surface Entropy Reduction Mutant of S. pneumoniae FabF==
==Crystal Structure Analysis of a Surface Entropy Reduction Mutant of S. pneumoniae FabF==
<StructureSection load='2rjt' size='340' side='right' caption='[[2rjt]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
<StructureSection load='2rjt' size='340' side='right'caption='[[2rjt]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2rjt]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"diplococcus_pneumoniae"_(klein_1884)_weichselbaum_1886 "diplococcus pneumoniae" (klein 1884) weichselbaum 1886]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RJT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2RJT FirstGlance]. <br>
<table><tr><td colspan='2'>[[2rjt]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae Streptococcus pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RJT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2RJT FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">fabF ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1313 "Diplococcus pneumoniae" (Klein 1884) Weichselbaum 1886])</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.75&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Beta-ketoacyl-[acyl-carrier-protein]_synthase_I Beta-ketoacyl-[acyl-carrier-protein] synthase I], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.41 2.3.1.41] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2rjt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rjt OCA], [https://pdbe.org/2rjt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2rjt RCSB], [https://www.ebi.ac.uk/pdbsum/2rjt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2rjt ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2rjt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rjt OCA], [http://pdbe.org/2rjt PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2rjt RCSB], [http://www.ebi.ac.uk/pdbsum/2rjt PDBsum]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/Q9FBC2_STREE Q9FBC2_STREE]] Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP.[PIRNR:PIRNR000447]  
[https://www.uniprot.org/uniprot/Q9FBC2_STREE Q9FBC2_STREE] Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP.[PIRNR:PIRNR000447]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rj/2rjt_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rj/2rjt_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
Line 19: Line 19:
</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=2rjt ConSurf].
</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=2rjt ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
A series of experiments with beta-ketoacyl acyl carrier protein synthase II (FabF) from Streptococcus pneumonia (spFabF) were undertaken to evaluate the capability of surface-entropy reduction (SER) to manipulate protein crystallization. Previous work has shown that this protein crystallizes in two forms. The triclinic form contains four molecules in the asymmetric unit (a.u.) and diffracts to 2.1 A resolution, while the more desirable primitive orthorhombic form contains one molecule in the a.u. and diffracts to 1.3 A. The aim was to evaluate the effect of SER mutations that were specifically engineered to avoid perturbing the crystal-packing interfaces employed by the favorable primitive orthorhombic crystal form while potentially disrupting a surface of the protein employed by the less desirable triclinic crystal form. Two mutant proteins were engineered, each of which harbored five SER mutations. Extensive crystallization screening produced crystals of the two mutants, but only under conditions that differed from those used for the native protein. One of the mutant proteins yielded crystals that were of a new form (centered orthorhombic), despite the fact that the interfaces employed by the primitive orthorhombic form of the native protein were specifically unaltered. Structure determination at 1.75 A resolution reveals that one of the mutations, E383A, appears to play a key role in disfavouring the less desirable triclinic crystal form and in generating a new surface for a packing interaction that stabilizes the new crystal form.
Surface-entropy reduction approaches to manipulate crystal forms of beta-ketoacyl acyl carrier protein synthase II from Streptococcus pneumoniae.,Parthasarathy G, Cummings R, Becker JW, Soisson SM Acta Crystallogr D Biol Crystallogr. 2008 Feb;64(Pt 2):141-8. Epub 2008 Jan 16. PMID:18219113<ref>PMID:18219113</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2rjt" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Acyl carrier protein synthase|Acyl carrier protein synthase]]
*[[Acyl carrier protein synthase 3D structures|Acyl carrier protein synthase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Becker, J]]
[[Category: Large Structures]]
[[Category: Parthasarathy, G]]
[[Category: Streptococcus pneumoniae]]
[[Category: Soisson, S M]]
[[Category: Becker J]]
[[Category: Acyltransferase]]
[[Category: Parthasarathy G]]
[[Category: Beta-ketoacyl acyl carrier protein synthase]]
[[Category: Soisson SM]]
[[Category: Fabf]]
[[Category: Kasii]]
[[Category: Thiolase]]
[[Category: Transferase]]

Latest revision as of 12:22, 21 February 2024

Crystal Structure Analysis of a Surface Entropy Reduction Mutant of S. pneumoniae FabFCrystal Structure Analysis of a Surface Entropy Reduction Mutant of S. pneumoniae FabF

Structural highlights

2rjt is a 4 chain structure with sequence from Streptococcus pneumoniae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.75Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q9FBC2_STREE Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP.[PIRNR:PIRNR000447]

Evolutionary Conservation

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

See Also

2rjt, resolution 1.75Å

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