2bf2

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[[Image:2bf2.gif|left|200px]]
 
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==Crystal structure of native toluene-4-monooxygenase catalytic effector protein, T4moD==
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The line below this paragraph, containing "STRUCTURE_2bf2", creates the "Structure Box" on the page.
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<StructureSection load='2bf2' size='340' side='right'caption='[[2bf2]], [[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'>[[2bf2]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_mendocina Pseudomonas mendocina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BF2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BF2 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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2bf2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bf2 OCA], [https://pdbe.org/2bf2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bf2 RCSB], [https://www.ebi.ac.uk/pdbsum/2bf2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bf2 ProSAT]</span></td></tr>
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{{STRUCTURE_2bf2| PDB=2bf2 | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TMOD_PSEME TMOD_PSEME] Effector protein subunit of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol. Required for optimal efficiency and specificity of the holoenzyme.<ref>PMID:11297417</ref> <ref>PMID:15882052</ref> <ref>PMID:19033467</ref>
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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/bf/2bf2_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=2bf2 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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Toluene 4-monooxygenase (T4MO) is a four-component complex that catalyzes the regiospecific, NADH-dependent hydroxylation of toluene to yield p-cresol. The catalytic effector (T4moD) of this complex is a 102-residue protein devoid of metals or organic cofactors. It forms a complex with the diiron hydroxylase component (T4moH) that influences both the kinetics and regiospecificity of catalysis. Here, we report crystal structures for native T4moD and two engineered variants with either four (DeltaN4-) or 10 (DeltaN10-) residues removed from the N-terminal at 2.1-, 1.7-, and 1.9-A resolution, respectively. The crystal structures have C-alpha root-mean-squared differences of less than 0.8 A for the central core consisting of residues 11-98, showing that alterations of the N-terminal have little influence on the folded core of the protein. The central core has the same fold topology as observed in the NMR structures of T4moD, the methane monooxygenase effector protein (MmoB) from two methanotrophs, and the phenol hydroxylase effector protein (DmpM). However, the root-mean-squared differences between comparable C-alpha positions in the X-ray structures and the NMR structures vary from approximately 1.8 A to greater than 6 A. The X-ray structures exhibit an estimated overall coordinate error from 0.095 (0.094) A based on the R-value (R free) for the highest resolution DeltaN4-T4moD structure to 0.211 (0.196) A for the native T4moD structure. Catalytic studies of the DeltaN4-, DeltaN7-, and DeltaN10- variants of T4moD show statistically insignificant changes in k(cat), K(M), k(cat)/K(M), and K(I) relative to the native protein. Moreover, there was no significant change in the regiospecificity of toluene oxidation with any of the T4moD variants. The relative insensitivity to changes in the N-terminal region distinguishes T4moD from the MmoB homologues, which each require the approximately 33 residue N-terminal region for catalytic activity.
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'''CRYSTAL STRUCTURE OF NATIVE TOLUENE-4-MONOOXYGENASE CATALYTIC EFFECTOR PROTEIN, T4MOD'''
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Crystal structures and functional studies of T4moD, the toluene 4-monooxygenase catalytic effector protein.,Lountos GT, Mitchell KH, Studts JM, Fox BG, Orville AM Biochemistry. 2005 May 17;44(19):7131-42. PMID:15882052<ref>PMID:15882052</ref>
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==Overview==
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Toluene 4-monooxygenase (T4MO) is a four-component complex that catalyzes the regiospecific, NADH-dependent hydroxylation of toluene to yield p-cresol. The catalytic effector (T4moD) of this complex is a 102-residue protein devoid of metals or organic cofactors. It forms a complex with the diiron hydroxylase component (T4moH) that influences both the kinetics and regiospecificity of catalysis. Here, we report crystal structures for native T4moD and two engineered variants with either four (DeltaN4-) or 10 (DeltaN10-) residues removed from the N-terminal at 2.1-, 1.7-, and 1.9-A resolution, respectively. The crystal structures have C-alpha root-mean-squared differences of less than 0.8 A for the central core consisting of residues 11-98, showing that alterations of the N-terminal have little influence on the folded core of the protein. The central core has the same fold topology as observed in the NMR structures of T4moD, the methane monooxygenase effector protein (MmoB) from two methanotrophs, and the phenol hydroxylase effector protein (DmpM). However, the root-mean-squared differences between comparable C-alpha positions in the X-ray structures and the NMR structures vary from approximately 1.8 A to greater than 6 A. The X-ray structures exhibit an estimated overall coordinate error from 0.095 (0.094) A based on the R-value (R free) for the highest resolution DeltaN4-T4moD structure to 0.211 (0.196) A for the native T4moD structure. Catalytic studies of the DeltaN4-, DeltaN7-, and DeltaN10- variants of T4moD show statistically insignificant changes in k(cat), K(M), k(cat)/K(M), and K(I) relative to the native protein. Moreover, there was no significant change in the regiospecificity of toluene oxidation with any of the T4moD variants. The relative insensitivity to changes in the N-terminal region distinguishes T4moD from the MmoB homologues, which each require the approximately 33 residue N-terminal region for catalytic activity.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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2BF2 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Pseudomonas_mendocina Pseudomonas mendocina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BF2 OCA].
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</div>
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<div class="pdbe-citations 2bf2" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Crystal structures and functional studies of T4moD, the toluene 4-monooxygenase catalytic effector protein., Lountos GT, Mitchell KH, Studts JM, Fox BG, Orville AM, Biochemistry. 2005 May 17;44(19):7131-42. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15882052 15882052]
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*[[Monooxygenase 3D structures|Monooxygenase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Pseudomonas mendocina]]
[[Category: Pseudomonas mendocina]]
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[[Category: Single protein]]
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[[Category: Fox BG]]
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[[Category: Fox, B G.]]
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[[Category: Lountos GT]]
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[[Category: Lountos, G T.]]
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[[Category: Mitchell KH]]
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[[Category: Mitchell, K H.]]
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[[Category: Orville AM]]
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[[Category: Orville, A M.]]
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[[Category: Studts JM]]
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[[Category: Studts, J M.]]
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[[Category: Aromatic hydrocarbon catabolism]]
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[[Category: Catalytic effector protein]]
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[[Category: Fad]]
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[[Category: Flavoprotein]]
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[[Category: Iron]]
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[[Category: Mad phasing]]
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[[Category: Monooxygenase]]
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[[Category: Oxidoreductase]]
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[[Category: Toluene oxidation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 20:12:21 2008''
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Current revision

Crystal structure of native toluene-4-monooxygenase catalytic effector protein, T4moD

PDB ID 2bf2

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