7btk

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'''Unreleased structure'''
 
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The entry 7btk is ON HOLD until Paper Publication
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==E.coli beta-galactosidase (E537Q) in complex with fluorescent probe KSA01==
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<StructureSection load='7btk' size='340' side='right'caption='[[7btk]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[7btk]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BTK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BTK FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DMS:DIMETHYL+SULFOXIDE'>DMS</scene>, <scene name='pdbligand=F6L:4-[[2-[(E)-2-[4-[(2S,3R,4S,5R,6R)-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxyphenyl]ethenyl]-3,3-dimethyl-2H-indol-1-yl]methyl]benzoic+acid'>F6L</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7btk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7btk OCA], [https://pdbe.org/7btk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7btk RCSB], [https://www.ebi.ac.uk/pdbsum/7btk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7btk ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/BGAL_ECOLI BGAL_ECOLI]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The tracking of cellular senescence usually depends on the detection of senescence-associated beta-galactosidase (SA-beta-gal). Previous probes for SA-beta-gal with this purpose only cover a single dimension: the accumulation of this enzyme in lysosomes. However, this is insufficient to determine the destiny of senescence because endogenous beta-gal enriched in lysosomes is not only related to senescence, but also to some other physiological processes. To address this issue, we introduce our fluorescent probes including a second dimension: lysosomal pH, since de-acidification is a unique feature of the lysosomes in senescent cells. With this novel design, our probes achieved excellent discrimination of SA-beta-gal from cancer-associated beta-gal, which enables them to track cellular senescence as well as tissue aging more precisely. Our crystal structures of a model enzyme E. coli beta-gal mutant (E537Q) complexed with each probe further revealed the structural basis for probe recognition.
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Authors:
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Two-Dimensional Design Strategy to Construct Smart Fluorescent Probes for the Precise Tracking of Senescence.,Guo Y, Gao Y, Hu Y, Liu Q, Li X, Li X, Kim CY, James TD, Li J, Chen X Angew Chem Int Ed Engl. 2021 Feb 24. doi: 10.1002/anie.202101278. PMID:33624914<ref>PMID:33624914</ref>
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Description:
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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<div class="pdbe-citations 7btk" style="background-color:#fffaf0;"></div>
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==See Also==
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*[[Galactosidase 3D structures|Galactosidase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Escherichia coli K-12]]
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[[Category: Large Structures]]
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[[Category: Chen X]]
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[[Category: Gao Y]]
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[[Category: Guo Y]]
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[[Category: Hu YL]]
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[[Category: Liu QM]]
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[[Category: Yuan R]]

Current revision

E.coli beta-galactosidase (E537Q) in complex with fluorescent probe KSA01

PDB ID 7btk

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