Flavocytochrome: Difference between revisions

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Michal Harel, Alexander Berchansky, Joel L. Sussman

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-[[Image:1kbi.png|left|200px|thumb|Crystal Structure of Flavocytochrome b2 [[1kbi]]]]
+<StructureSection load='2b7r' size='450' side='right' caption='Structure of heme-containing flavocytochrome c3 complex with FAD and fumaric acid (PDB code [[2b7r]]).' scene='' >
-{{STRUCTURE_1kbi|  PDB=1kbi  | SIZE=300| SCENE=Flavocytochrome/Cv/1 |right|CAPTION=Yeast flavocytochrome b2 complex with FMN, MPD, phosphate, pyruvic acid [[1kbi]] }}
-'''Flavocytochrome b2''' (Fcb2) is a flavin-dependent hydroxy acid dehydrogenase.  Fc P450 BM3 is a fatty acid hydroxtylase.  Fcc3 has fumarate reductase activity.
-{{TOC limit|limit=2}}
+* '''Flavocytochrome c''' or '''flavocytochrome c sulphide dehydrogenase''' or  '''Fcc''' catalyzes the conversion of H2S and ferricytochrome c to S and ferrocytochrome c.<br />
+*  '''Fcc3''' has fumarate reductase activity<ref>PMID:12093271</ref>
+* '''Flavocytochrome b2''' is a L-lactate/cytochrome c oxidoreductase<ref>PMID:15260495</ref>
+* '''Flavocytochrome b558''' is the catalytic component of the phagocyte NADPH oxidase
+<scene name='44/442751/Cv/10'>Structure of heme-containing flavocytochrome c3 complex with FAD and fumaric acid</scene> (PDB code [[2b7r]]<ref>PMID:16699170</ref>).
+*<scene name='44/442751/Cv/12'>1st Heme binding site</scene>. Water molecules are shown as red spheres.
+*<scene name='44/442751/Cv/13'>1st Heme Fe coordination site</scene>.
+*<scene name='44/442751/Cv/14'>2nd Heme binding site</scene>.
+*<scene name='44/442751/Cv/15'>2nd Heme Fe coordination site</scene>.
+*<scene name='44/442751/Cv/16'>3rd Heme binding site</scene>.
+*<scene name='44/442751/Cv/17'>3rd Heme Fe coordination site</scene>.
+*<scene name='44/442751/Cv/18'>4th Heme binding site</scene>.
+*<scene name='44/442751/Cv/19'>4th Heme Fe coordination site</scene>.
-== 3D Structures of flavocytochrome ==
+Interestedly, that all 4 heme groups are <scene name='44/442751/Cv/20'>covalently bound with Cys residues</scene> in heme-containing flavocytochrome c3 (PDB code [[2b7r]]).
+<scene name='44/442751/Cv/26'>All Fe of 4 heme groups are coordinated with His residues</scene>.
-===Fc===
+<scene name='44/442751/Cv/22'>Fumaric acid binding site</scene>.
-[[3kx3]], [[3kx4]], [[3kx5]], [[3ekb]], [[3ekd]], [[3ekf]], [[3nnb]], [[2yqo]], [[2yqp]], [[1p0v]], [[1p0w]], [[1p0x]], [[1jme]] – BmFc P450 BM3 (mutant) – ''Bacillus megaterium''<br />
+<scene name='44/442751/Cv/24'>FAD binding site</scene>.
-[[2ij2]] - BmFc P450 BM3<br />
-[[2uwh]] - BmFc P450 BM3 (mutant)+palmitic acid<br />
-[[2j1m]], [[2j4s]] - BmFc P450 BM3 + DMSO<br />
-[[3ben]] - BmFc P450 BM3 heme domain+inhibitor
-===Fcb2===
+<scene name='44/442751/Cv/25'>Na coordination site</scene>.
-[[3ks0]] – mFcb2 heme domain+fragment antigen binding B2B4+Cyt b2 – mouse<br />
+== 3D Structures of flavocytochrome ==
-[[2oz0]], [[1qcw]] – yFcb2 (mutant) – yeast<br />
+[[Flavocytochrome 3D structures]]
-[[1kbi]], [[1fcb]] – yFcb2<br />
-[[1kbj]] – yFcb2 FMN binding domain<br />
-[[1sze]] – yFcb2 (mutant)+benzoylformate<br />
-[[1szf]], [[1lco]], [[1ldc]] – yFcb2 (mutant)+pyruvate derivative<br />
-[[1szg]] – yFcb2 (mutant)+sulfite<br />
-[[1ltd]] – yFcb2 +sulfite
-===Fcc===
+</StructureSection>
-[[2b7r]], [[2b7s]], [[1q9i]], [[1p2e]], [[1p2h]], [[1lj1]], [[1m64]], [[1kss]], [[1ksu]], [[1jrx]], [[1jry]], [[1jrz]], [[1e39]] – SfFcc3 (mutant) – ''Shewanella frigidimarina''<br />
+== References ==
-[[1qo8]], [[1qjd]] - SfFcc3<br />
+<references/>
-[[1y0p]] – SfFcc3+mesaconate<br />
-[[1wve]] – Fcc+4-cresol dehydrogenase – ''Pseudomonas putida''
 [[Category:Topic Page]]

Flavocytochrome: Difference between revisions

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