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1d7b

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[[Image:1d7b.gif|left|200px]]<br /><applet load="1d7b" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1d7b, resolution 1.90&Aring;" />
 
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'''CYTOCHROME DOMAIN OF CELLOBIOSE DEHYDROGENASE, PH 7.5'''<br />
 
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==Overview==
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==CYTOCHROME DOMAIN OF CELLOBIOSE DEHYDROGENASE, PH 7.5==
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BACKGROUND: The fungal oxidoreductase cellobiose dehydrogenase (CDH) degrades both lignin and cellulose, and is the only known extracellular flavocytochrome. This haemoflavoenzyme has a multidomain organisation with a b-type cytochrome domain linked to a large flavodehydrogenase domain. The two domains can be separated proteolytically to yield a functional cytochrome and a flavodehydrogenase. Here, we report the crystal structure of the cytochrome domain of CDH. RESULTS: The crystal structure of the b-type cytochrome domain of CDH from the wood-degrading fungus Phanerochaete chrysosporium has been determined at 1.9 A resolution using multiple isomorphous replacement including anomalous scattering information. Three models of the cytochrome have been refined: the in vitro prepared cytochrome in its redox-inactive state (pH 7.5) and redox-active state (pH 4.6), as well as the naturally occurring cytochrome fragment. CONCLUSIONS: The 190-residue long cytochrome domain of CDH folds as a beta sandwich with the topology of the antibody Fab V(H) domain. The haem iron is ligated by Met65 and His163, which confirms previous results from spectroscopic studies. This is only the second example of a b-type cytochrome with this ligation, the first being cytochrome b(562). The haem-propionate groups are surface exposed and, therefore, might play a role in the association between the cytochrome and flavoprotein domain, and in interdomain electron transfer. There are no large differences in overall structure of the cytochrome at redox-active pH as compared with the inactive form, which excludes the possibility that pH-dependent redox inactivation results from partial denaturation. From the electron-density map of the naturally occurring cytochrome, we conclude that it corresponds to the proteolytically prepared cytochrome domain.
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<StructureSection load='1d7b' size='340' side='right'caption='[[1d7b]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[1d7b]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Phanerodontia_chrysosporium Phanerodontia chrysosporium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D7B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1D7B FirstGlance]. <br>
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1D7B is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Phanerochaete_chrysosporium Phanerochaete chrysosporium] with <scene name='pdbligand=CD:'>CD</scene>, <scene name='pdbligand=HEM:'>HEM</scene> and <scene name='pdbligand=1PG:'>1PG</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Deleted_entry Deleted entry], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.25 1.1.3.25] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D7B OCA].
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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]] 1.9&#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=1PG:2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL'>1PG</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr>
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==Reference==
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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=1d7b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d7b OCA], [https://pdbe.org/1d7b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1d7b RCSB], [https://www.ebi.ac.uk/pdbsum/1d7b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1d7b ProSAT]</span></td></tr>
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A new scaffold for binding haem in the cytochrome domain of the extracellular flavocytochrome cellobiose dehydrogenase., Hallberg BM, Bergfors T, Backbro K, Pettersson G, Henriksson G, Divne C, Structure. 2000 Jan 15;8(1):79-88. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10673428 10673428]
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</table>
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[[Category: Deleted entry]]
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== Function ==
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[[Category: Phanerochaete chrysosporium]]
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[https://www.uniprot.org/uniprot/CDH_PHACH CDH_PHACH] Degrades both lignin and cellulose. Oxidizes cellobiose to cellobionolactone.
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[[Category: Single protein]]
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== Evolutionary Conservation ==
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[[Category: Backbro, K.]]
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[[Image:Consurf_key_small.gif|200px|right]]
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[[Category: Bergfors, T.]]
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Check<jmol>
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[[Category: Divne, C.]]
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<jmolCheckbox>
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[[Category: Hallberg, B M.]]
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d7/1d7b_consurf.spt"</scriptWhenChecked>
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[[Category: 1PG]]
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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[[Category: CD]]
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<text>to colour the structure by Evolutionary Conservation</text>
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[[Category: HEM]]
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</jmolCheckbox>
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[[Category: b-type cytochrome]]
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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=1d7b ConSurf].
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[[Category: beta sandwich]]
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<div style="clear:both"></div>
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[[Category: fe(ii)-protoporphyrin ix]]
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__TOC__
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[[Category: met/his ligation]]
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</StructureSection>
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[[Category: Large Structures]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:13:49 2008''
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[[Category: Phanerodontia chrysosporium]]
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[[Category: Backbro K]]
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[[Category: Bergfors T]]
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[[Category: Divne C]]
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[[Category: Hallberg BM]]

Current revision

CYTOCHROME DOMAIN OF CELLOBIOSE DEHYDROGENASE, PH 7.5

PDB ID 1d7b

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