6k3c
From Proteopedia
(Difference between revisions)
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==Crystal structure of class I PHA synthase (PhaC) mutant from Chromobacterium sp. USM2 bound to Coenzyme A.== | ==Crystal structure of class I PHA synthase (PhaC) mutant from Chromobacterium sp. USM2 bound to Coenzyme A.== | ||
| - | <StructureSection load='6k3c' size='340' side='right'caption='[[6k3c]]' scene=''> | + | <StructureSection load='6k3c' size='340' side='right'caption='[[6k3c]], [[Resolution|resolution]] 3.07Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6K3C OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6K3C FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6k3c]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Chromobacterium_sp._usm2 Chromobacterium sp. usm2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6K3C OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6K3C FirstGlance]. <br> |
| - | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6k3c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6k3c OCA], [http://pdbe.org/6k3c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6k3c RCSB], [http://www.ebi.ac.uk/pdbsum/6k3c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6k3c ProSAT]</span></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=COA:COENZYME+A'>COA</scene></td></tr> |
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">phaC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=611307 Chromobacterium sp. USM2])</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6k3c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6k3c OCA], [http://pdbe.org/6k3c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6k3c RCSB], [http://www.ebi.ac.uk/pdbsum/6k3c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6k3c ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Biodegradable polyester polyhydroxyalkanoate (PHA) is a promising bioplastic material for industrial use as a replacement for petroleum-based plastics. PHA synthase PhaC forms an active dimer to polymerize acyl moieties from the substrate acyl-coenzyme A (CoA) into PHA polymers. Here we present the crystal structure of the catalytic domain of PhaC from Chromobacterium sp. USM2, bound to CoA. The structure reveals an asymmetric dimer, in which one protomer adopts an open conformation bound to CoA, whereas the other adopts a closed conformation in a CoA-free form. The open conformation is stabilized by the asymmetric dimerization and enables PhaC to accommodate CoA and also to create the product egress path. The bound CoA molecule has its beta-mercaptoethanolamine moiety extended into the active site with the terminal SH group close to active center Cys291, enabling formation of the reaction intermediate by acylation of Cys291. | ||
| + | |||
| + | Asymmetric Open-Closed Dimer Mechanism of Polyhydroxyalkanoate Synthase PhaC.,Chek MF, Kim SY, Mori T, Tan HT, Sudesh K, Hakoshima T iScience. 2020 May 22;23(5):101084. doi: 10.1016/j.isci.2020.101084. Epub 2020, Apr 21. PMID:32388399<ref>PMID:32388399</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6k3c" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Chromobacterium sp. usm2]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Chek | + | [[Category: Chek, M F]] |
| - | [[Category: Hakoshima T]] | + | [[Category: Hakoshima, T]] |
| - | [[Category: Kim | + | [[Category: Kim, S Y]] |
| - | [[Category: Mori T]] | + | [[Category: Mori, T]] |
| + | [[Category: Bioplastic synthase]] | ||
| + | [[Category: Biosynthetic protein]] | ||
| + | [[Category: Catalytic domain]] | ||
| + | [[Category: Coa binding]] | ||
| + | [[Category: Open conformation]] | ||
| + | [[Category: Open-closed dimer]] | ||
Revision as of 07:11, 27 May 2020
Crystal structure of class I PHA synthase (PhaC) mutant from Chromobacterium sp. USM2 bound to Coenzyme A.
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