This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
5ync
From Proteopedia
(Difference between revisions)
| Line 7: | Line 7: | ||
<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=5ync FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ync OCA], [http://pdbe.org/5ync PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ync RCSB], [http://www.ebi.ac.uk/pdbsum/5ync PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ync ProSAT]</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=5ync FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ync OCA], [http://pdbe.org/5ync PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ync RCSB], [http://www.ebi.ac.uk/pdbsum/5ync PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ync ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Crystal structures of Klebsiella pneumoniae pullulanase (KPP) in complex with alpha-cyclodextrin (alpha-CD), beta-cyclodextrin (beta-CD) and gamma-cyclodextrin (gamma-CD) were refined at around 1.98-2.59 A resolution from data collected at SPring-8. In the structures of the complexes obtained with 1 mM alpha-CD or gamma-CD, one molecule of CD was found at carbohydrate-binding module 41 only (CBM41). In the structures of the complexes obtained with 1 mM beta-CD or with 10 mM alpha-CD or gamma-CD, two molecules of CD were found at CBM41 and in the active-site cleft, where the hydrophobic residue of Phe746 occupies the inside cavity of the CD rings. In contrast to alpha-CD and gamma-CD, one beta-CD molecule was found at the active site only in the presence of 0.1 mM beta-CD. These results were coincident with the solution experiments, which showed that beta-CD inhibits this enzyme more than a thousand times more potently than alpha-CD and gamma-CD. The strong inhibition of beta-CD is caused by the optimized interaction between beta-CD and the side chain of Phe746. The increased Ki values of the F746A mutant for beta-CD supported the importance of Phe746 in the strong interaction of pullulanase with beta-CD. | ||
| + | |||
| + | Elucidation of the mechanism of interaction between Klebsiella pneumoniae pullulanase and cyclodextrin.,Saka N, Iwamoto H, Malle D, Takahashi N, Mizutani K, Mikami B Acta Crystallogr D Struct Biol. 2018 Nov 1;74(Pt 11):1115-1123. doi:, 10.1107/S2059798318014523. Epub 2018 Oct 30. PMID:30387770<ref>PMID:30387770</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5ync" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Revision as of 08:53, 14 November 2018
Crystal structure of Pullulanase from Klebsiella pneumoniae complex at 1 mM beta-cyclodextrin
| |||||||||||
