1ehb: Difference between revisions

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New page: left|200px<br /><applet load="1ehb" size="450" color="white" frame="true" align="right" spinBox="true" caption="1ehb, resolution 1.90Å" /> '''CRYSTAL STRUCTURE OF...
 
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[[Image:1ehb.jpg|left|200px]]<br /><applet load="1ehb" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1ehb, resolution 1.90&Aring;" />
'''CRYSTAL STRUCTURE OF RECOMBINANT TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5'''<br />


==Overview==
==CRYSTAL STRUCTURE OF RECOMBINANT TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5==
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.
<StructureSection load='1ehb' size='340' side='right'caption='[[1ehb]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1ehb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EHB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EHB FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
<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>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ehb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ehb OCA], [https://pdbe.org/1ehb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ehb RCSB], [https://www.ebi.ac.uk/pdbsum/1ehb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ehb ProSAT]</span></td></tr>
</table>
== Function ==
[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.
== 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/eh/1ehb_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=1ehb ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1EHB is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] with HEM as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1EHB OCA].
*[[Cytochrome b5 3D structures|Cytochrome b5 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
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://ispc.weizmann.ac.il//pmbin/getpm?pmid=10842340 10842340]
[[Category: Bos taurus]]
[[Category: Bos taurus]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Gan, J.H.]]
[[Category: Gan J-H]]
[[Category: Huang, Z.X.]]
[[Category: Huang Z-X]]
[[Category: Wang, W.H.]]
[[Category: Wang W-H]]
[[Category: Wang, Y.H.]]
[[Category: Wang Y-H]]
[[Category: Wu, J.]]
[[Category: Wu J]]
[[Category: Xia, Z.X.]]
[[Category: Xia Z-X]]
[[Category: Xie, Y.]]
[[Category: Xie Y]]
[[Category: Xue, L.L.]]
[[Category: Xue L-L]]
[[Category: HEM]]
[[Category: cytochrome b5; trypsin-cleaved fragment; recombinant wild type; crystal structure]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 14:00:17 2007''

Latest revision as of 10:02, 7 February 2024

CRYSTAL STRUCTURE OF RECOMBINANT TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5CRYSTAL STRUCTURE OF RECOMBINANT TRYPSIN-SOLUBILIZED FRAGMENT OF CYTOCHROME B5

Structural highlights

1ehb is a 1 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.9Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CYB5_BOVIN Cytochrome b5 is a membrane bound hemoprotein which function as an electron carrier for several membrane bound oxygenases.

Evolutionary Conservation

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

See Also

1ehb, resolution 1.90Å

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