1l3b

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{{Seed}}
 
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[[Image:1l3b.png|left|200px]]
 
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==MT0146, THE PRECORRIN-6Y METHYLTRANSFERASE (CBIT) HOMOLOG FROM M. THERMOAUTOTROPHICUM, C2 SPACEGROUP W/ LONG CELL==
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The line below this paragraph, containing "STRUCTURE_1l3b", creates the "Structure Box" on the page.
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<StructureSection load='1l3b' size='340' side='right'caption='[[1l3b]], [[Resolution|resolution]] 2.65&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'>[[1l3b]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanothermobacter_thermautotrophicus Methanothermobacter thermautotrophicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L3B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1L3B 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]] 2.65&#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=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
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{{STRUCTURE_1l3b| PDB=1l3b | 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=1l3b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l3b OCA], [https://pdbe.org/1l3b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1l3b RCSB], [https://www.ebi.ac.uk/pdbsum/1l3b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1l3b ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CBIT_METTH CBIT_METTH] Catalyzes the methylation of C-15 in cobalt-precorrin-6B followed by the decarboxylation of C-12 to form cobalt-precorrin-7 (Probable).<ref>PMID:12429089</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/l3/1l3b_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1l3b 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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The CbiT and CbiE enzymes participate in the biosynthesis of vitamin B12. They are fused together in some organisms to form a protein called CobL, which catalyzes two methylations and one decarboxylation on a precorrin intermediate. Because CbiE has sequence homology to canonical precorrin methyltransferases, CbiT was hypothesized to catalyze the decarboxylation. We herein present the crystal structure of MT0146, the CbiT homolog from Methanobacterium thermoautotrophicum. The protein shows structural similarity to Rossmann-like S-adenosyl-methionine-dependent methyltransferases, and our 1.9 A cocrystal structure shows that it binds S-adenosyl-methionine in standard geometry near a binding pocket that could accommodate a precorrin substrate. Therefore, MT0146/CbiT probably functions as a precorrin methyltransferase and represents the first enzyme identified with this activity that does not have the canonical precorrin methyltransferase fold.
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===MT0146, THE PRECORRIN-6Y METHYLTRANSFERASE (CBIT) HOMOLOG FROM M. THERMOAUTOTROPHICUM, C2 SPACEGROUP W/ LONG CELL===
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The crystal structure of MT0146/CbiT suggests that the putative precorrin-8w decarboxylase is a methyltransferase.,Keller JP, Smith PM, Benach J, Christendat D, deTitta GT, Hunt JF Structure. 2002 Nov;10(11):1475-87. PMID:12429089<ref>PMID:12429089</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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The line below this paragraph, {{ABSTRACT_PUBMED_12429089}}, adds the Publication Abstract to the page
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<div class="pdbe-citations 1l3b" style="background-color:#fffaf0;"></div>
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(as it appears on PubMed at http://www.pubmed.gov), where 12429089 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_12429089}}
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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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1L3B is a 8 chains structure of sequences from [http://en.wikipedia.org/wiki/Methanothermobacter_thermautotrophicus Methanothermobacter thermautotrophicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L3B OCA].
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==Reference==
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<ref group="xtra">PMID:12429089</ref><references group="xtra"/>
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[[Category: Methanothermobacter thermautotrophicus]]
[[Category: Methanothermobacter thermautotrophicus]]
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[[Category: Benach, J.]]
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[[Category: Benach J]]
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[[Category: Christendat, D.]]
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[[Category: Christendat D]]
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[[Category: Hunt, J F.]]
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[[Category: Hunt JF]]
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[[Category: Keller, J P.]]
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[[Category: Keller JP]]
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[[Category: Smith, P M.]]
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[[Category: Smith PM]]
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[[Category: DeTitta, G.]]
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[[Category: DeTitta G]]
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[[Category: Beta barrel]]
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[[Category: Decarboxylase]]
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[[Category: Methyltransferase]]
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[[Category: Rossmann fold]]
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[[Category: Structural genomic]]
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[[Category: Structure-based function assignment]]
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[[Category: Tetramer]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Feb 17 00:55:51 2009''
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Current revision

MT0146, THE PRECORRIN-6Y METHYLTRANSFERASE (CBIT) HOMOLOG FROM M. THERMOAUTOTROPHICUM, C2 SPACEGROUP W/ LONG CELL

PDB ID 1l3b

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