1kbj

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{{Seed}}
 
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[[Image:1kbj.png|left|200px]]
 
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==Crystallographic Study of the Recombinant Flavin-binding Domain of Baker's Yeast Flavocytochrome b2: comparison with the Intact Wild-type Enzyme==
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The line below this paragraph, containing "STRUCTURE_1kbj", creates the "Structure Box" on the page.
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<StructureSection load='1kbj' size='340' side='right'caption='[[1kbj]], [[Resolution|resolution]] 2.50&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'>[[1kbj]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KBJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KBJ 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]] 2.5&#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=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene></td></tr>
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{{STRUCTURE_1kbj| PDB=1kbj | 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=1kbj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kbj OCA], [https://pdbe.org/1kbj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kbj RCSB], [https://www.ebi.ac.uk/pdbsum/1kbj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kbj ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CYB2_YEAST CYB2_YEAST]
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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/kb/1kbj_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=1kbj ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Flavocytochrome b(2) catalyzes the oxidation of L-lactate to pyruvate and the transfer of electrons to cytochrome c. The enzyme consists of a flavin-binding domain, which includes the active site for lacate oxidation, and a b(2)-cytochrome domain, required for efficient cytochrome c reduction. To better understand the structure and function of intra- and interprotein electron transfer, we have determined the crystal structure of the independently expressed flavin-binding domain of flavocytochrome b(2) to 2.50 A resolution and compared this with the structure of the intact enzyme, redetermined at 2.30 A resolution, both structures being from crystals cooled to 100 K. Whereas there is little overall difference between these structures, we do observe significant local changes near the interface region, some of which impact on amino acid side chains, such as Arg289, that have been shown previously to have an important role in catalysis. The disordered loop region found in flavocytochrome b(2) and its close homologues remain unresolved in frozen crystals of the flavin-binding domain, implying that the presence of the b(2)-cytochrome domain is not responsible for this positional disorder. The flavin-binding domain interacts poorly with cytochrome c, but we have introduced acidic residues in the interdomain interface region with the aim of enhancing cytochrome c binding. While the mutations L199E and K201E within the flavin-binding domain resulted in unimpaired lactate dehydrogenase activity, they failed to enhance electron-transfer rates with cytochrome c. This is most likely due to the disordered loop region obscuring all or part of the surface having the potential for productive interaction with cytochrome c.
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===Crystallographic Study of the Recombinant Flavin-binding Domain of Baker's Yeast Flavocytochrome b2: comparison with the Intact Wild-type Enzyme===
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Crystallographic study of the recombinant flavin-binding domain of Baker's yeast flavocytochrome b(2): comparison with the intact wild-type enzyme.,Cunane LM, Barton JD, Chen ZW, Welsh FE, Chapman SK, Reid GA, Mathews FS Biochemistry. 2002 Apr 2;41(13):4264-72. PMID:11914072<ref>PMID:11914072</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1kbj" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_11914072}}, adds the Publication Abstract to the page
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*[[Lactate dehydrogenase 3D structures|Lactate dehydrogenase 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 11914072 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_11914072}}
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Large Structures]]
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1KBJ is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KBJ OCA].
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==Reference==
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<ref group="xtra">PMID:11914072</ref><references group="xtra"/>
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[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Barton, J D.]]
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[[Category: Barton JD]]
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[[Category: Chapman, S K.]]
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[[Category: Chapman SK]]
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[[Category: Chen, Z W.]]
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[[Category: Chen ZW]]
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[[Category: Cunane, L M.]]
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[[Category: Cunane LM]]
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[[Category: Mathews, F S.]]
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[[Category: Mathews FS]]
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[[Category: Reid, G A.]]
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[[Category: Reid GA]]
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[[Category: Welsh, F E.]]
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[[Category: Welsh FE]]
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[[Category: Flavin-binding domain of flavocytochrome b2]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 19:55:57 2009''
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Current revision

Crystallographic Study of the Recombinant Flavin-binding Domain of Baker's Yeast Flavocytochrome b2: comparison with the Intact Wild-type Enzyme

PDB ID 1kbj

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