3pbc

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==Peptidase module of the peptidoglycan hydrolase RipA (Rv1477) from Mycobacterium tuberculosis at 1.38 resolution==
==Peptidase module of the peptidoglycan hydrolase RipA (Rv1477) from Mycobacterium tuberculosis at 1.38 resolution==
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<StructureSection load='3pbc' size='340' side='right' caption='[[3pbc]], [[Resolution|resolution]] 1.38&Aring;' scene=''>
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<StructureSection load='3pbc' size='340' side='right'caption='[[3pbc]], [[Resolution|resolution]] 1.38&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3pbc]] is a 1 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=3PBC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3PBC FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3pbc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PBC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3PBC FirstGlance]. <br>
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</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3pbi|3pbi]], [[3s0q|3s0q]]</td></tr>
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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]] 1.38&#8491;</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Rv1477 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884])</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=3pbc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pbc OCA], [https://pdbe.org/3pbc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3pbc RCSB], [https://www.ebi.ac.uk/pdbsum/3pbc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3pbc ProSAT]</span></td></tr>
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<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=3pbc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pbc OCA], [http://pdbe.org/3pbc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3pbc RCSB], [http://www.ebi.ac.uk/pdbsum/3pbc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3pbc ProSAT]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/RIPA_MYCTU RIPA_MYCTU]] Peptidoglycan endopeptidase that cleaves the bond between D-glutamate and meso-diaminopimelate. Binds and degrades high-molecular weight peptidoglycan from a number of Actinobacteria; activity is increased in the presence of RpfB and inhibited by PBP1A (ponA1). Required for normal separation of daughter cells after cell division and for cell wall integrity. Required for host cell invasion and intracellular survival in host macrophages.<ref>PMID:16495549</ref> <ref>PMID:17919286</ref> <ref>PMID:18463693</ref> <ref>PMID:20826344</ref> <ref>PMID:21864539</ref>
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[https://www.uniprot.org/uniprot/RIPA_MYCTU RIPA_MYCTU] Peptidoglycan endopeptidase that cleaves the bond between D-glutamate and meso-diaminopimelate. Binds and degrades high-molecular weight peptidoglycan from a number of Actinobacteria; activity is increased in the presence of RpfB and inhibited by PBP1A (ponA1). Required for normal separation of daughter cells after cell division and for cell wall integrity. Required for host cell invasion and intracellular survival in host macrophages.<ref>PMID:16495549</ref> <ref>PMID:17919286</ref> <ref>PMID:18463693</ref> <ref>PMID:20826344</ref> <ref>PMID:21864539</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The success of Mycobacterium tuberculosis in sustaining long-term survival within the host macrophages partly relies on its unique cell envelop that also confers low susceptibility to several antibiotics. Remodeling of the septal peptidoglycan (PG) has been linked to the putative PG hydrolases RipA and RipB. The crystal structures of RipB (Rv1478) and the homologous module of RipA (Rv1477) were determined to 1.60 A and 1.38 A resolution, respectively. Both proteins contain a C-terminal core domain resembling the NlpC-type PG hydrolases. However, the structure of RipB exhibits striking differences to the structures of this domain in RipA reported here and previously by others. Major structural differences were found in the N-terminal segments of 70 amino acids and in an adjacent loop, which form part of the substrate binding groove. Both RipA and RipB are able to bind PG. RipA, its C-terminal module and RipB cleave defined PG fragments between d-glutamate and meso-diaminopimelate with pH optima of 5 and 6, respectively. The peptidase module of RipA is also able to degrade Bacillus subtilis PG, which displays peptide stems and cross-links identical with those found in mycobacterial murein. RipB did not show comparable hydrolase activity with this substrate. Removal of the N-terminal segments previously suggested to have a role in auto-inhibition did not change the activity of either RipA or RipB. A comparison of the putative active-site clefts in the two enzymes provides structural insights into the basis of the differences in their substrate specificity.
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Peptidoglycan Remodeling in Mycobacterium tuberculosis: Comparison of Structures and Catalytic Activities of RipA and RipB.,Both D, Schneider G, Schnell R J Mol Biol. 2011 Oct 14;413(1):247-60. Epub 2011 Aug 16. PMID:21864539<ref>PMID:21864539</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3pbc" style="background-color:#fffaf0;"></div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Both, D]]
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[[Category: Large Structures]]
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[[Category: Schneider, G]]
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[[Category: Mycobacterium tuberculosis]]
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[[Category: Schnell, R]]
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[[Category: Both D]]
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[[Category: Cell wall]]
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[[Category: Schneider G]]
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[[Category: Extracellular]]
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[[Category: Schnell R]]
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[[Category: Hydrolase]]
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[[Category: Nlpc -like module]]
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[[Category: Peptidoglycan hydrolase]]
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[[Category: Petidoglycan]]
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Current revision

Peptidase module of the peptidoglycan hydrolase RipA (Rv1477) from Mycobacterium tuberculosis at 1.38 resolution

PDB ID 3pbc

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