1es1

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[[Image:1es1.jpg|left|200px]]
 
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==CRYSTAL STRUCTURE OF VAL61HIS MUTANT OF TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5==
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The line below this paragraph, containing "STRUCTURE_1es1", creates the "Structure Box" on the page.
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<StructureSection load='1es1' size='340' side='right'caption='[[1es1]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1es1]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1qdx 1qdx]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ES1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ES1 FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
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{{STRUCTURE_1es1| PDB=1es1 | SCENE= }}
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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=1es1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1es1 OCA], [https://pdbe.org/1es1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1es1 RCSB], [https://www.ebi.ac.uk/pdbsum/1es1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1es1 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CYB5_BOVIN CYB5_BOVIN] Cytochrome b5 is a membrane bound hemoprotein which function as an electron carrier for several membrane bound oxygenases.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/es/1es1_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1es1 ConSurf].
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<div style="clear:both"></div>
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'''CRYSTAL STRUCTURE OF VAL61HIS MUTANT OF TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5'''
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==See Also==
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*[[Cytochrome b5 3D structures|Cytochrome b5 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The crystal structure of the recombinant trypsin-solubilized fragment of the microsomal cytochrome b(5) from bovine liver has been determined at 1.9 A resolution and compared with the reported crystal structure of the lipase-solubilized fragment of the membrane protein cytochrome b(5). The two structures are similar to each other. However, some detailed structural differences are observed: the conformation of the segment Asn16-Ser20 is quite different, some helices around the heme and some segments between the helices are shifted slightly, the heme is rotated about the normal of the mean plane of heme, one of the propionates of the heme exhibits a different conformation. The average coordination distances between the iron and the two nitrogen atoms of the imidazole ligands are the same in the two structures. Most of the structural differences can be attributed to the different intermolecular interactions which result from the crystal packing. The wild-type protein structure is also compared with its Val61His mutant, showing that the heme binding and the main chain conformations are basically identical with each other except for the local area of the mutation site. However, when Val61 is mutated to histidine, the large side chain of His61 is forced to point away from the heme pocket toward the solvent region, disturbing the micro-environment of the heme pocket and influencing the stability and the redox potential of the protein.
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==About this Structure==
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1ES1 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1qdx 1qdx]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ES1 OCA].
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==Reference==
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Crystal structure of recombinant trypsin-solubilized fragment of cytochrome b(5) and the structural comparison with Val61His mutant., Wu J, Gan JH, Xia ZX, Wang YH, Wang WH, Xue LL, Xie Y, Huang ZX, Proteins. 2000 Aug 1;40(2):249-57. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10842340 10842340]
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[[Category: Bos taurus]]
[[Category: Bos taurus]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Gan, J H.]]
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[[Category: Gan J-H]]
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[[Category: Huang, Z X.]]
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[[Category: Huang Z-X]]
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[[Category: Wang, W H.]]
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[[Category: Wang W-H]]
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[[Category: Wang, Y H.]]
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[[Category: Wang Y-H]]
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[[Category: Wu, J.]]
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[[Category: Wu J]]
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[[Category: Xia, Z X.]]
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[[Category: Xia Z-X]]
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[[Category: Xie, Y.]]
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[[Category: Xie Y]]
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[[Category: Xue, L L.]]
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[[Category: Xue L-L]]
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[[Category: Cytochrome b5]]
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[[Category: Mutant val61his;crystal structure]]
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[[Category: Structure comparison with the wild type fragment;]]
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[[Category: Trypsin-cleaved fragment]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 15:27:09 2008''
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Current revision

CRYSTAL STRUCTURE OF VAL61HIS MUTANT OF TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5

PDB ID 1es1

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