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1on3

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Revision as of 07:47, 15 February 2018

Transcarboxylase 12S crystal structure: hexamer assembly and substrate binding to a multienzyme core (with methylmalonyl-coenzyme a and methylmalonic acid bound)

Structural highlights

1on3 is a 6 chain structure with sequence from "bacterium_acidi_propionici_a"_von_freudenreich_and_orla-jensen_1907 "bacterium acidi propionici a" von freudenreich and orla-jensen 1907. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
Related:	1on9
Activity:	Methylmalonyl-CoA carboxytransferase, with EC number 2.1.3.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[12S_PROFR] The 12S subunit specifically catalyzes the transfer of the carboxyl group of methylmalonyl CoA to the biotin of the 1.3S subunit forming propanoyl-CoA and carboxylated 1.3S-biotin.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Transcarboxylase from Propionibacterium shermanii is a 1.2 MDa multienzyme complex that couples two carboxylation reactions, transferring CO(2)(-) from methylmalonyl-CoA to pyruvate, yielding propionyl-CoA and oxaloacetate. The 1.9 A resolution crystal structure of the central 12S hexameric core, which catalyzes the first carboxylation reaction, has been solved bound to its substrate methylmalonyl-CoA. Overall, the structure reveals two stacked trimers related by 2-fold symmetry, and a domain duplication in the monomer. In the active site, the labile carboxylate group of methylmalonyl-CoA is stabilized by interaction with the N-termini of two alpha-helices. The 12S domains are structurally similar to the crotonase/isomerase superfamily, although only domain 1 of each 12S monomer binds ligand. The 12S reaction is similar to that of human propionyl-CoA carboxylase, whose beta-subunit has 50% sequence identity with 12S. A homology model of the propionyl-CoA carboxylase beta-subunit, based on this 12S crystal structure, provides new insight into the propionyl-CoA carboxylase mechanism, its oligomeric structure and the molecular basis of mutations responsible for enzyme deficiency in propionic acidemia.

Transcarboxylase 12S crystal structure: hexamer assembly and substrate binding to a multienzyme core.,Hall PR, Wang YF, Rivera-Hainaj RE, Zheng X, Pustai-Carey M, Carey PR, Yee VC EMBO J. 2003 May 15;22(10):2334-47. PMID:12743028^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Hall PR, Wang YF, Rivera-Hainaj RE, Zheng X, Pustai-Carey M, Carey PR, Yee VC. Transcarboxylase 12S crystal structure: hexamer assembly and substrate binding to a multienzyme core. EMBO J. 2003 May 15;22(10):2334-47. PMID:12743028 doi:10.1093/emboj/cdg244

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1on3"

@@ Line 1: / Line 1: @@
 ==Transcarboxylase 12S crystal structure: hexamer assembly and substrate binding to a multienzyme core (with methylmalonyl-coenzyme a and methylmalonic acid bound)==
 <StructureSection load='1on3' size='340' side='right' caption='[[1on3]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1on9|1on9]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Methylmalonyl-CoA_carboxytransferase Methylmalonyl-CoA carboxytransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.3.1 2.1.3.1] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1on3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1on3 OCA], [http://pdbe.org/1on3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1on3 RCSB], [http://www.ebi.ac.uk/pdbsum/1on3 PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1on3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1on3 OCA], [http://pdbe.org/1on3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1on3 RCSB], [http://www.ebi.ac.uk/pdbsum/1on3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1on3 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/on/1on3_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/on/1on3_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1on3

From Proteopedia

Revision as of 07:47, 15 February 2018

Transcarboxylase 12S crystal structure: hexamer assembly and substrate binding to a multienzyme core (with methylmalonyl-coenzyme a and methylmalonic acid bound)

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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