3hln: Difference between revisions
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==Crystal structure of ClpP A153C mutant with inter-heptamer disulfide bonds== | ==Crystal structure of ClpP A153C mutant with inter-heptamer disulfide bonds== | ||
<StructureSection load='3hln' size='340' side='right' caption='[[3hln]], [[Resolution|resolution]] 3.20Å' scene=''> | <StructureSection load='3hln' size='340' side='right'caption='[[3hln]], [[Resolution|resolution]] 3.20Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3hln]] is a 28 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3hln]] is a 28 chain structure with sequence from [https://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HLN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3HLN FirstGlance]. <br> | ||
</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" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">b0437, clpP, JW0427, lopP ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">b0437, clpP, JW0427, lopP ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Endopeptidase_Clp Endopeptidase Clp], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.92 3.4.21.92] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3hln FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hln OCA], [https://pdbe.org/3hln PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3hln RCSB], [https://www.ebi.ac.uk/pdbsum/3hln PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3hln ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/CLPP_ECOLI CLPP_ECOLI]] Cleaves peptides in various proteins in a process that requires ATP hydrolysis. Has a chymotrypsin-like activity. Plays a major role in the degradation of misfolded proteins. May play the role of a master protease which is attracted to different substrates by different specificity factors such as ClpA or ClpX. | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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==See Also== | ==See Also== | ||
*[[Clp | *[[Clp protease 3D structures|Clp protease 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Ecoli]] | [[Category: Ecoli]] | ||
[[Category: Endopeptidase Clp]] | [[Category: Endopeptidase Clp]] | ||
[[Category: Large Structures]] | |||
[[Category: Borg, M]] | [[Category: Borg, M]] | ||
[[Category: Chan, H S]] | [[Category: Chan, H S]] | ||
Revision as of 15:01, 13 October 2021
Crystal structure of ClpP A153C mutant with inter-heptamer disulfide bondsCrystal structure of ClpP A153C mutant with inter-heptamer disulfide bonds
Structural highlights
Function[CLPP_ECOLI] Cleaves peptides in various proteins in a process that requires ATP hydrolysis. Has a chymotrypsin-like activity. Plays a major role in the degradation of misfolded proteins. May play the role of a master protease which is attracted to different substrates by different specificity factors such as ClpA or ClpX. 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 highly conserved ClpP protease consists of two heptameric rings that interact by the interdigitation of an alpha-helix beta strand handle domain motif to form a tetradecameric cylinder. We previously proposed that protease dynamics results in the temporary unstructuring of interacting pairs of handle domains, opening transient equatorial side pores that allow for peptide egress. Here, we report the structure of an Escherichia coli ClpP mutant in which each opposing pair of protomers is linked by a disulfide bond. This structure resembles the compact structures of Streptococcus pneumoniae, Mycobacterium tuberculosis, and Plasmodium falciparum ClpPs, rather than the active, extended structures that have previously been determined for E. coli ClpPs. The structural data, along with normal mode analysis, support a model whereby the ClpP cylinder switches dynamically between an active extended state required for substrate degradation and an inactive compact state allowing peptide product release. Structural and theoretical studies indicate that the cylindrical protease ClpP samples extended and compact conformations.,Kimber MS, Yu AY, Borg M, Leung E, Chan HS, Houry WA Structure. 2010 Jul 14;18(7):798-808. PMID:20637416[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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