2bh5: Difference between revisions

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-[[Image:2bh5.png|left|200px]]
+==X-RAY STRUCTURE OF THE M100K VARIANT OF FERRIC CYT C-550 FROM PARACOCCUS VERSUTUS DETERMINED AT 295 K.==
+<StructureSection load='2bh5' size='340' side='right' caption='[[2bh5]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2bh5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Paracoccus_versutus Paracoccus versutus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BH5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BH5 FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEC:HEME+C'>HEC</scene><br>
+<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2bgv|2bgv]], [[2bh4|2bh4]]</td></tr>
+<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=2bh5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bh5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2bh5 RCSB], [http://www.ebi.ac.uk/pdbsum/2bh5 PDBsum]</span></td></tr>
+<table>
+== 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/bh/2bh5_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/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The structure of cytochrome c-550 from the nonphotosynthetic bacteria Paraccocus versutus has been solved by X-ray crystallography to 1.90 A resolution, and reveals a high structural homology to other bacterial cytochromes c(2). The effect of replacing the axial heme-iron methionine ligand with a lysine residue on protein structure and unfolding has been assessed using the M100K variant. From X-ray structures at 1.95 and 1.55 A resolution it became clear that the amino group of the lysine side chain coordinates to the heme-iron. Structural differences compared to the wild-type protein are confined to the lysine ligand loop connecting helices four and five. In the heme cavity an additional water molecule is found which participates in an H-bonding interaction with the lysine ligand. Under cryo-conditions extra electron density in the lysine ligand loop is revealed, leading to residues K97 to T101 being modeled with a double main-chain conformation. Upon unfolding, dissociation of the lysine ligand from the heme-iron is shown to be pH dependent, with NMR data consistent with the occurrence of a ligand exchange mechanism similar to that seen for the wild-type protein.
-{{STRUCTURE_2bh5|  PDB=2bh5  |  SCENE=  }}
+The effect of replacing the axial methionine ligand with a lysine residue in cytochrome c-550 from Paracoccus versutus assessed by X-ray crystallography and unfolding.,Worrall JA, van Roon AM, Ubbink M, Canters GW FEBS J. 2005 May;272(10):2441-55. PMID:15885094<ref>PMID:15885094</ref>
-===X-RAY STRUCTURE OF THE M100K VARIANT OF FERRIC CYT C-550 FROM PARACOCCUS VERSUTUS DETERMINED AT 295 K.===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_15885094}}
-==About this Structure==
-[[2bh5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Paracoccus_versutus Paracoccus versutus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BH5 OCA].
 ==See Also==
 *[[Cytochrome c|Cytochrome c]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:015885094</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Paracoccus versutus]]
 [[Category: Canters, G W.]]