6tv7

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of rsGCaMP in the OFF state (illuminated)

Structural highlights

6tv7 is a 1 chain structure with sequence from Aequorea victoria. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.9Å
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

CALM1_HUMAN The disease is caused by mutations affecting the gene represented in this entry. Mutations in CALM1 are the cause of CPVT4. The disease is caused by mutations affecting the gene represented in this entry. Mutations in CALM1 are the cause of LQT14.

Function

CALM1_HUMAN Calmodulin mediates the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis (PubMed:16760425). Mediates calcium-dependent inactivation of CACNA1C (PubMed:26969752). Positively regulates calcium-activated potassium channel activity of KCNN2 (PubMed:27165696).^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

Reversibly photo-switchable proteins are essential for many super-resolution fluorescence microscopic and optoacoustic imaging methods. However, they have yet to be used as sensors that measure the distribution of specific analytes at the nanoscale or in the tissues of live animals. Here we constructed the prototype of a photo-switchable Ca(2+) sensor based on GCaMP5G that can be switched with 405/488-nm light and describe its molecular mechanisms at the structural level, including the importance of the interaction of the core barrel structure of the fluorescent protein with the Ca(2+) receptor moiety. We demonstrate super-resolution imaging of Ca(2+) concentration in cultured cells and optoacoustic Ca(2+) imaging in implanted tumor cells in mice under controlled Ca(2+) conditions. Finally, we show the generalizability of the concept by constructing examples of photo-switching maltose and dopamine sensors based on periplasmatic binding protein and G-protein-coupled receptor-based sensors.

Genetically encoded photo-switchable molecular sensors for optoacoustic and super-resolution imaging.,Mishra K, Fuenzalida-Werner JP, Pennacchietti F, Janowski R, Chmyrov A, Huang Y, Zakian C, Klemm U, Testa I, Niessing D, Ntziachristos V, Stiel AC Nat Biotechnol. 2021 Nov 29. pii: 10.1038/s41587-021-01100-5. doi:, 10.1038/s41587-021-01100-5. PMID:34845372^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Tsang WY, Spektor A, Luciano DJ, Indjeian VB, Chen Z, Salisbury JL, Sanchez I, Dynlacht BD. CP110 cooperates with two calcium-binding proteins to regulate cytokinesis and genome stability. Mol Biol Cell. 2006 Aug;17(8):3423-34. Epub 2006 Jun 7. PMID:16760425 doi:10.1091/mbc.E06-04-0371
↑ Reichow SL, Clemens DM, Freites JA, Nemeth-Cahalan KL, Heyden M, Tobias DJ, Hall JE, Gonen T. Allosteric mechanism of water-channel gating by Ca-calmodulin. Nat Struct Mol Biol. 2013 Jul 28. doi: 10.1038/nsmb.2630. PMID:23893133 doi:10.1038/nsmb.2630
↑ Boczek NJ, Gomez-Hurtado N, Ye D, Calvert ML, Tester DJ, Kryshtal D, Hwang HS, Johnson CN, Chazin WJ, Loporcaro CG, Shah M, Papez AL, Lau YR, Kanter R, Knollmann BC, Ackerman MJ. Spectrum and Prevalence of CALM1-, CALM2-, and CALM3-Encoded Calmodulin Variants in Long QT Syndrome and Functional Characterization of a Novel Long QT Syndrome-Associated Calmodulin Missense Variant, E141G. Circ Cardiovasc Genet. 2016 Apr;9(2):136-146. doi:, 10.1161/CIRCGENETICS.115.001323. Epub 2016 Mar 11. PMID:26969752 doi:http://dx.doi.org/10.1161/CIRCGENETICS.115.001323
↑ Yu CC, Ko JS, Ai T, Tsai WC, Chen Z, Rubart M, Vatta M, Everett TH 4th, George AL Jr, Chen PS. Arrhythmogenic calmodulin mutations impede activation of small-conductance calcium-activated potassium current. Heart Rhythm. 2016 Aug;13(8):1716-23. doi: 10.1016/j.hrthm.2016.05.009. Epub 2016, May 7. PMID:27165696 doi:http://dx.doi.org/10.1016/j.hrthm.2016.05.009
↑ Mishra K, Fuenzalida-Werner JP, Pennacchietti F, Janowski R, Chmyrov A, Huang Y, Zakian C, Klemm U, Testa I, Niessing D, Ntziachristos V, Stiel AC. Genetically encoded photo-switchable molecular sensors for optoacoustic and super-resolution imaging. Nat Biotechnol. 2021 Nov 29. pii: 10.1038/s41587-021-01100-5. doi:, 10.1038/s41587-021-01100-5. PMID:34845372 doi:http://dx.doi.org/10.1038/s41587-021-01100-5

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6tv7"

@@ Line 3: / Line 3: @@
 <StructureSection load='6tv7' size='340' side='right'caption='[[6tv7]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6tv7]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TV7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TV7 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6tv7]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Aequorea_victoria Aequorea victoria]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TV7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TV7 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></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]] 2.9&#8491;</td></tr>
-<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PIA:[(4Z)-2-[(1S)-1-AMINOETHYL]-4-(4-HYDROXYBENZYLIDENE)-5-OXO-4,5-DIHYDRO-1H-IMIDAZOL-1-YL]ACETIC+ACID'>PIA</scene></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PIA:[(4Z)-2-[(1S)-1-AMINOETHYL]-4-(4-HYDROXYBENZYLIDENE)-5-OXO-4,5-DIHYDRO-1H-IMIDAZOL-1-YL]ACETIC+ACID'>PIA</scene></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=6tv7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tv7 OCA], [https://pdbe.org/6tv7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tv7 RCSB], [https://www.ebi.ac.uk/pdbsum/6tv7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tv7 ProSAT]</span></td></tr>
 </table>
+== Disease ==
+[https://www.uniprot.org/uniprot/CALM1_HUMAN CALM1_HUMAN] The disease is caused by mutations affecting the gene represented in this entry. Mutations in CALM1 are the cause of CPVT4.  The disease is caused by mutations affecting the gene represented in this entry. Mutations in CALM1 are the cause of LQT14.
+== Function ==
+[https://www.uniprot.org/uniprot/CALM1_HUMAN CALM1_HUMAN] Calmodulin mediates the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis (PubMed:16760425). Mediates calcium-dependent inactivation of CACNA1C (PubMed:26969752). Positively regulates calcium-activated potassium channel activity of KCNN2 (PubMed:27165696).<ref>PMID:16760425</ref> <ref>PMID:23893133</ref> <ref>PMID:26969752</ref> <ref>PMID:27165696</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 21: / Line 25: @@
 __TOC__
 </StructureSection>
+[[Category: Aequorea victoria]]
 [[Category: Large Structures]]
-[[Category: Fuenzalida-Werner, J P]]
+[[Category: Fuenzalida-Werner JP]]
-[[Category: Janowski, R]]
+[[Category: Janowski R]]
-[[Category: Mishra, K]]
+[[Category: Mishra K]]
-[[Category: Niessing, D]]
+[[Category: Niessing D]]
-[[Category: Stiel, A C]]
+[[Category: Stiel AC]]
-[[Category: Calcium sensor]]
-[[Category: Calmodulin]]
-[[Category: Fluorescent protein]]
-[[Category: Reversible switchable fluorescent protein]]

6tv7

From Proteopedia

Current revision

Crystal structure of rsGCaMP in the OFF state (illuminated)

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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