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6vgk

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Revision as of 09:48, 1 April 2020

ClpP1P2 complex from M. tuberculosis

Structural highlights

6vgk is a 14 chain structure with sequence from "bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	clpP2, Rv2460c, MTV008.16c ("Bacillus tuberculosis" (Zopf 1883) Klein 1884), clpP1, clpP, Rv2461c, MTV008.17c ("Bacillus tuberculosis" (Zopf 1883) Klein 1884)
Activity:	Endopeptidase Clp, with EC number 3.4.21.92
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CLPP2_MYCTU] 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 (By similarity). Degrades anti-sigma-D factor RsdA when present in a complex with ClpP1 and ClpX. Degrades anti-sigma-E factor RseA in the presence of ClpC1. Does not seem to act on anti-sigma-L factor RslA.[HAMAP-Rule:MF_00444]^[1] ^[2] [CLPP1_MYCTU] 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 (By similarity).

Publication Abstract from PubMed

The 300-kDa ClpP1P2 protease from Mycobacterium tuberculosis collaborates with the AAA+ (ATPases associated with a variety of cellular activities) unfoldases, ClpC1 and ClpX, to degrade substrate proteins. Unlike in other bacteria, all of the components of the Clp system are essential for growth and virulence of mycobacteria, and their inhibitors show promise as antibiotics. MtClpP1P2 is unique in that it contains a pair of distinct ClpP1 and ClpP2 rings and also requires the presence of activator peptides, such as benzoyl-leucyl-leucine (Bz-LL), for function. Understanding the structural basis for this requirement has been elusive but is critical for the rational design and improvement of antituberculosis (anti-TB) therapeutics that target the Clp system. Here, we present a combined biophysical and biochemical study to explore the structure-dynamics-function relationship in MtClpP1P2. Electron cryomicroscopy (cryo-EM) structures of apo and acyldepsipeptide-bound MtClpP1P2 explain their lack of activity by showing loss of a key beta-sheet in a sequence known as the handle region that is critical for the proper formation of the catalytic triad. Methyl transverse relaxation-optimized spectroscopy (TROSY)-based NMR, cryo-EM, and biochemical assays show that, on binding Bz-LL or covalent inhibitors, MtClpP1P2 undergoes a conformational change from an inactive compact state to an active extended structure that can be explained by a modified Monod-Wyman-Changeux model. Our study establishes a critical role for the handle region as an on/off switch for function and shows extensive allosteric interactions involving both intra- and interring communication that regulate MtClpP1P2 activity and that can potentially be exploited by small molecules to target M. tuberculosis.

An allosteric switch regulates Mycobacterium tuberculosis ClpP1P2 protease function as established by cryo-EM and methyl-TROSY NMR.,Vahidi S, Ripstein ZA, Juravsky JB, Rennella E, Goldberg AL, Mittermaier AK, Rubinstein JL, Kay LE Proc Natl Acad Sci U S A. 2020 Mar 2. pii: 1921630117. doi:, 10.1073/pnas.1921630117. PMID:32123115^[3]

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

References

↑ Barik S, Sureka K, Mukherjee P, Basu J, Kundu M. RseA, the SigE specific anti-sigma factor of Mycobacterium tuberculosis, is inactivated by phosphorylation-dependent ClpC1P2 proteolysis. Mol Microbiol. 2010 Feb;75(3):592-606. doi: 10.1111/j.1365-2958.2009.07008.x., Epub 2009 Dec 16. PMID:20025669 doi:http://dx.doi.org/10.1111/j.1365-2958.2009.07008.x
↑ Jaiswal RK, Prabha TS, Manjeera G, Gopal B. Mycobacterium tuberculosis RsdA provides a conformational rationale for selective regulation of sigma-factor activity by proteolysis. Nucleic Acids Res. 2013 Jan 11. PMID:23314154 doi:http://dx.doi.org/10.1093/nar/gks1468
↑ Vahidi S, Ripstein ZA, Juravsky JB, Rennella E, Goldberg AL, Mittermaier AK, Rubinstein JL, Kay LE. An allosteric switch regulates Mycobacterium tuberculosis ClpP1P2 protease function as established by cryo-EM and methyl-TROSY NMR. Proc Natl Acad Sci U S A. 2020 Mar 2. pii: 1921630117. doi:, 10.1073/pnas.1921630117. PMID:32123115 doi:http://dx.doi.org/10.1073/pnas.1921630117

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 3: / Line 3: @@
 <StructureSection load='6vgk' size='340' side='right'caption='[[6vgk]], [[Resolution|resolution]] 3.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6vgk]] is a 14 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6VGK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6VGK FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6vgk]] is a 14 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6VGK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6VGK FirstGlance]. <br>
-</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Endopeptidase_Clp Endopeptidase Clp], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.92 3.4.21.92] </span></td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">clpP2, Rv2460c, MTV008.16c ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884]), clpP1, clpP, Rv2461c, MTV008.17c ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884])</td></tr>
+<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Endopeptidase_Clp Endopeptidase Clp], with EC number [http://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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6vgk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6vgk OCA], [http://pdbe.org/6vgk PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6vgk RCSB], [http://www.ebi.ac.uk/pdbsum/6vgk PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6vgk ProSAT]</span></td></tr>
 </table>

6vgk

From Proteopedia

Revision as of 09:48, 1 April 2020

ClpP1P2 complex from M. tuberculosis

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

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Views

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