1otn: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
==Calcium-binding mutant of the Internalin B LRR domain== | ==Calcium-binding mutant of the Internalin B LRR domain== | ||
<StructureSection load='1otn' size='340' side='right' caption='[[1otn]], [[Resolution|resolution]] 1.97Å' scene=''> | <StructureSection load='1otn' size='340' side='right' caption='[[1otn]], [[Resolution|resolution]] 1.97Å' scene=''> | ||
| Line 5: | Line 6: | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1d0b|1d0b]], [[1otm|1otm]], [[1oto|1oto]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1d0b|1d0b]], [[1otm|1otm]], [[1oto|1oto]]</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=1otn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1otn OCA], [http://pdbe.org/1otn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1otn RCSB], [http://www.ebi.ac.uk/pdbsum/1otn 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=1otn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1otn OCA], [http://pdbe.org/1otn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1otn RCSB], [http://www.ebi.ac.uk/pdbsum/1otn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1otn ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
Revision as of 11:06, 12 October 2017
Calcium-binding mutant of the Internalin B LRR domainCalcium-binding mutant of the Internalin B LRR domain
Structural highlights
Function[INLB_LISMO] Mediates the entry of Listeria monocytogenes into cells. 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 PubMedThe Listeria monocytogenes protein InlB promotes invasion of mammalian cells through activation of the receptor tyrosine kinase Met. The InlB N-cap, a approximately 40 residue part of the domain that binds Met, was previously observed to bind two calcium ions in a novel and unusually exposed manner. Because subsequent work raised questions about the existence of these calcium-binding sites, we assayed calcium binding in solution to the InlB N-cap. We show that calcium ions are bound with dissociation constants in the low micromolar range at the two identified sites, and that the sites interact with one another. We demonstrate that the calcium ions are not required for structure, and also find that they have no appreciable effect on Met activation or intracellular invasion. Therefore, our results indicate that the sites are fortuitous in InlB, but also suggest that the simple architecture of the sites may be adaptable for protein engineering purposes. Characterization of the calcium-binding sites of Listeria monocytogenes InlB.,Marino M, Banerjee M, Copp J, Dramsi S, Chapman T, van der Geer P, Cossart P, Ghosh P Biochem Biophys Res Commun. 2004 Apr 2;316(2):379-86. PMID:15020228[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
|
| ||||||||||||||||||