3cl1: Difference between revisions
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==M. loti cyclic-nucleotide binding domain, cyclic-GMP bound== | ==M. loti cyclic-nucleotide binding domain, cyclic-GMP bound== | ||
<StructureSection load='3cl1' size='340' side='right' caption='[[3cl1]], [[Resolution|resolution]] 2.40Å' scene=''> | <StructureSection load='3cl1' size='340' side='right' caption='[[3cl1]], [[Resolution|resolution]] 2.40Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3cl1]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[3cl1]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Rhizobium_loti Rhizobium loti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CL1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CL1 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PCG:CYCLIC+GUANOSINE+MONOPHOSPHATE'>PCG</scene>, <scene name='pdbligand=POL:N-PROPANOL'>POL</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PCG:CYCLIC+GUANOSINE+MONOPHOSPHATE'>PCG</scene>, <scene name='pdbligand=POL:N-PROPANOL'>POL</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1vp6|1vp6]], [[1u12|1u12]], [[3beh|3beh]], [[3clp|3clp]], [[3co2|3co2]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1vp6|1vp6]], [[1u12|1u12]], [[3beh|3beh]], [[3clp|3clp]], [[3co2|3co2]]</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=3cl1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cl1 OCA], [http://pdbe.org/3cl1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3cl1 RCSB], [http://www.ebi.ac.uk/pdbsum/3cl1 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=3cl1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cl1 OCA], [http://pdbe.org/3cl1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3cl1 RCSB], [http://www.ebi.ac.uk/pdbsum/3cl1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3cl1 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cl/3cl1_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cl/3cl1_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</div> | </div> | ||
<div class="pdbe-citations 3cl1" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 3cl1" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Ion channels|Ion channels]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Rhizobium loti]] | ||
[[Category: Alteiri, S L]] | [[Category: Alteiri, S L]] | ||
[[Category: Clayton, G M]] | [[Category: Clayton, G M]] | ||
Revision as of 16:53, 7 November 2018
M. loti cyclic-nucleotide binding domain, cyclic-GMP boundM. loti cyclic-nucleotide binding domain, cyclic-GMP bound
Structural highlights
Function[CNGK1_RHILO] Cyclic nucleotide-regulated potassium channel activated by cAMP.[1] 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 PubMedMlotiK1 is a prokaryotic homolog of cyclic-nucleotide-dependent ion channels that contains an intracellular C-terminal cyclic nucleotide binding (CNB) domain. X-ray structures of the CNB domain have been solved in the absence of ligand and bound to cAMP. Both the full-length channel and CNB domain fragment are easily expressed and purified, making MlotiK1 a useful model system for dissecting activation by ligand binding. We have used X-ray crystallography to determine three new MlotiK1 CNB domain structures: a second apo configuration, a cGMP-bound structure, and a second cAMP-bound structure. In combination, the five MlotiK1 CNB domain structures provide a unique opportunity for analyzing, within a single protein, the structural differences between the apo state and the bound state, and the structural variability within each state. With this analysis as a guide, we have probed the nucleotide selectivity and importance of specific residue side chains in ligand binding and channel activation. These data help to identify ligand-protein interactions that are important for ligand dependence in MlotiK1 and, more globally, in the class of nucleotide-dependent proteins. Structural and energetic analysis of activation by a cyclic nucleotide binding domain.,Altieri SL, Clayton GM, Silverman WR, Olivares AO, De la Cruz EM, Thomas LR, Morais-Cabral JH J Mol Biol. 2008 Sep 5;381(3):655-69. Epub 2008 Jun 10. PMID:18619611[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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