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[[Image: | ==CRYSTAL STRUCTURE OF THE MODULAR CPL-1 ENDOLYSIN COMPLEXED WITH A PEPTIDOGLYCAN ANALOGUE (E94Q MUTANT)== | ||
<StructureSection load='2ixv' size='340' side='right' caption='[[2ixv]], [[Resolution|resolution]] 1.96Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2ixv]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptococcus_phage_cp-1 Streptococcus phage cp-1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IXV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2IXV FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene>, <scene name='pdbligand=MU2:N-ACETYLMURAMYL-L-ALANYL-D-ISOGLUTAMINE'>MU2</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1h09|1h09]], [[1oba|1oba]], [[2ixu|2ixu]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span></td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ixv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ixv OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ixv RCSB], [http://www.ebi.ac.uk/pdbsum/2ixv PDBsum]</span></td></tr> | |||
<table> | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ix/2ixv_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Pneumococcal bacteriophage-encoded lysins are modular proteins that have been shown to act as enzymatic antimicrobial agents (enzybiotics) in treatment of streptococcal infections. The first x-ray crystal structures of the Cpl-1 lysin, encoded by the pneumococcal phage Cp-1, in complex with three bacterial cell wall peptidoglycan (PG) analogues are reported herein. The Cpl-1 structure is folded in two well defined modules, one responsible for anchoring to the pneumococcal cell wall and the other, a catalytic module, that hydrolyzes the PG. Conformational rearrangement of Tyr-127 is a critical event in molecular recognition of a stretch of five saccharide rings of the polymeric peptidoglycan (cell wall). The PG is bound at a stretch of the surface that is defined as the peptidoglycan-binding sites 1 and 2, the juncture of which catalysis takes place. The peptidoglycan-binding site 1 binds to a stretch of three saccharides of the peptidoglycan in a conformation essentially identical to that of the peptidoglycan in solution. In contrast, binding of two peptidoglycan saccharides at the peptidoglycan-binding site 2 introduces a kink into the solution structure of the peptidoglycan, en route to catalytic turnover. These findings provide the first structural evidence on recognition of the peptidoglycan and shed light on the discrete events of cell wall degradation by Cpl-1. | |||
Elucidation of the molecular recognition of bacterial cell wall by modular pneumococcal phage endolysin CPL-1.,Perez-Dorado I, Campillo NE, Monterroso B, Hesek D, Lee M, Paez JA, Garcia P, Martinez-Ripoll M, Garcia JL, Mobashery S, Menendez M, Hermoso JA J Biol Chem. 2007 Aug 24;282(34):24990-9. Epub 2007 Jun 19. PMID:17581815<ref>PMID:17581815</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[ | *[[Lysozyme 3D structures|Lysozyme 3D structures]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Lysozyme]] | [[Category: Lysozyme]] | ||
[[Category: Streptococcus phage cp-1]] | [[Category: Streptococcus phage cp-1]] | ||
Revision as of 06:52, 29 September 2014
CRYSTAL STRUCTURE OF THE MODULAR CPL-1 ENDOLYSIN COMPLEXED WITH A PEPTIDOGLYCAN ANALOGUE (E94Q MUTANT)CRYSTAL STRUCTURE OF THE MODULAR CPL-1 ENDOLYSIN COMPLEXED WITH A PEPTIDOGLYCAN ANALOGUE (E94Q MUTANT)
Structural highlights
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 PubMedPneumococcal bacteriophage-encoded lysins are modular proteins that have been shown to act as enzymatic antimicrobial agents (enzybiotics) in treatment of streptococcal infections. The first x-ray crystal structures of the Cpl-1 lysin, encoded by the pneumococcal phage Cp-1, in complex with three bacterial cell wall peptidoglycan (PG) analogues are reported herein. The Cpl-1 structure is folded in two well defined modules, one responsible for anchoring to the pneumococcal cell wall and the other, a catalytic module, that hydrolyzes the PG. Conformational rearrangement of Tyr-127 is a critical event in molecular recognition of a stretch of five saccharide rings of the polymeric peptidoglycan (cell wall). The PG is bound at a stretch of the surface that is defined as the peptidoglycan-binding sites 1 and 2, the juncture of which catalysis takes place. The peptidoglycan-binding site 1 binds to a stretch of three saccharides of the peptidoglycan in a conformation essentially identical to that of the peptidoglycan in solution. In contrast, binding of two peptidoglycan saccharides at the peptidoglycan-binding site 2 introduces a kink into the solution structure of the peptidoglycan, en route to catalytic turnover. These findings provide the first structural evidence on recognition of the peptidoglycan and shed light on the discrete events of cell wall degradation by Cpl-1. Elucidation of the molecular recognition of bacterial cell wall by modular pneumococcal phage endolysin CPL-1.,Perez-Dorado I, Campillo NE, Monterroso B, Hesek D, Lee M, Paez JA, Garcia P, Martinez-Ripoll M, Garcia JL, Mobashery S, Menendez M, Hermoso JA J Biol Chem. 2007 Aug 24;282(34):24990-9. Epub 2007 Jun 19. PMID:17581815[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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