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| | <StructureSection load='2gpw' size='340' side='right'caption='[[2gpw]], [[Resolution|resolution]] 2.20Å' scene=''> | | <StructureSection load='2gpw' size='340' side='right'caption='[[2gpw]], [[Resolution|resolution]] 2.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2gpw]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GPW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GPW FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2gpw]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GPW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GPW FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1w93|1w93]], [[1w96|1w96]], [[1dv1|1dv1]], [[1dv2|1dv2]], [[1bnc|1bnc]]</div></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">accC ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Biotin_carboxylase Biotin carboxylase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.3.4.14 6.3.4.14] </span></td></tr>
| + | |
| | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2gpw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gpw OCA], [https://pdbe.org/2gpw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gpw RCSB], [https://www.ebi.ac.uk/pdbsum/2gpw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gpw ProSAT]</span></td></tr> | | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2gpw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gpw OCA], [https://pdbe.org/2gpw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gpw RCSB], [https://www.ebi.ac.uk/pdbsum/2gpw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gpw ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/ACCC_ECOLI ACCC_ECOLI]] This protein is a component of the acetyl coenzyme A carboxylase complex; first, biotin carboxylase catalyzes the carboxylation of the carrier protein and then the transcarboxylase transfers the carboxyl group to form malonyl-CoA.
| + | [https://www.uniprot.org/uniprot/ACCC_ECOLI ACCC_ECOLI] This protein is a component of the acetyl coenzyme A carboxylase complex; first, biotin carboxylase catalyzes the carboxylation of the carrier protein and then the transcarboxylase transfers the carboxyl group to form malonyl-CoA. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus coli migula 1895]] | + | [[Category: Escherichia coli]] |
| - | [[Category: Biotin carboxylase]]
| + | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Chang, G G]] | + | [[Category: Chang GG]] |
| - | [[Category: Chou, C Y]] | + | [[Category: Chou CY]] |
| - | [[Category: Shen, Y]] | + | [[Category: Shen Y]] |
| - | [[Category: Tong, L]] | + | [[Category: Tong L]] |
| - | [[Category: Atp-grasp]]
| + | |
| - | [[Category: Biotin-dependent]]
| + | |
| - | [[Category: Carboxylase]]
| + | |
| - | [[Category: Dimer-interface mutant]]
| + | |
| - | [[Category: Fatty acid synthesis]]
| + | |
| - | [[Category: Ligase]]
| + | |
| Structural highlights
Function
ACCC_ECOLI This protein is a component of the acetyl coenzyme A carboxylase complex; first, biotin carboxylase catalyzes the carboxylation of the carrier protein and then the transcarboxylase transfers the carboxyl group to form malonyl-CoA.
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
Acetyl-coenzyme A carboxylases (ACCs) have crucial roles in fatty acid metabolism. The biotin carboxylase (BC) subunit of Escherichia coli ACC is believed to be active only as a dimer, although the crystal structure shows that the active site of each monomer is 25 A from the dimer interface. We report here biochemical, biophysical, and structural characterizations of BC carrying single-site mutations in the dimer interface. Our studies demonstrate that two of the mutants, R19E and E23R, are monomeric in solution but have only a 3-fold loss in catalytic activity. The crystal structures of the E23R and F363A mutants show that they can still form the correct dimer at high concentrations. Our data suggest that dimerization is not an absolute requirement for the catalytic activity of the E. coli BC subunit, and we propose a new model for the molecular mechanism of action for BC in multisubunit and multidomain ACCs.
Is dimerization required for the catalytic activity of bacterial biotin carboxylase?,Shen Y, Chou CY, Chang GG, Tong L Mol Cell. 2006 Jun 23;22(6):807-18. PMID:16793549[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Shen Y, Chou CY, Chang GG, Tong L. Is dimerization required for the catalytic activity of bacterial biotin carboxylase? Mol Cell. 2006 Jun 23;22(6):807-18. PMID:16793549 doi:10.1016/j.molcel.2006.04.026
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