2c5w

From Proteopedia

(Difference between revisions)

Current revision

PENICILLIN-BINDING PROTEIN 1A (PBP-1A) ACYL-ENZYME COMPLEX (CEFOTAXIME) FROM STREPTOCOCCUS PNEUMONIAE

Structural highlights

2c5w is a 2 chain structure with sequence from Streptococcus pneumoniae R6. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.55Å
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PBPA_STRR6 Cell wall formation.

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 PubMed

Streptococcus pneumoniae is a major human pathogen whose infections have been treated with beta-lactam antibiotics for over 60 years, but the proliferation of strains that are highly resistant to such drugs is a problem of worldwide concern. Beta-lactams target penicillin-binding proteins (PBPs), membrane-associated enzymes that play essential roles in the peptidoglycan biosynthetic process. Bifunctional PBPs catalyze both the polymerization of glycan chains (glycosyltransfer) and the cross-linking of adjacent pentapeptides (transpeptidation), while monofunctional enzymes catalyze only the latter reaction. Although S. pneumoniae has six PBPs, only three (PBP1a, PBP2x, PBP2b) are major resistance determinants, with PBP1a being the only bifunctional enzyme. PBP1a plays a key role in septum formation during the cell division cycle and its modification is essential for the development of high-level resistance to penicillins and cephalosporins. The crystal structure of a soluble form of pneumococcal PBP1a (PBP1a*) has been solved to 2.6A and reveals that it folds into three domains. The N terminus contains a peptide from the glycosyltransfer domain bound to an interdomain linker region, followed by a central, transpeptidase domain, and a small C-terminal unit. An analysis of PBP1a sequences from drug-resistant clinical strains in light of the structure reveals the existence of a mutational hotspot at the entrance of the catalytic cleft that leads to the modification of the polarity and accessibility of the mutated PBP1a active site. The presence of this hotspot in all variants sequenced to date is of key relevance for the development of novel antibiotherapies for the treatment of beta-lactam-resistant pneumococcal strains.

Crystal structure of penicillin-binding protein 1a (PBP1a) reveals a mutational hotspot implicated in beta-lactam resistance in Streptococcus pneumoniae.,Contreras-Martel C, Job V, Di Guilmi AM, Vernet T, Dideberg O, Dessen A J Mol Biol. 2006 Jan 27;355(4):684-96. Epub 2005 Nov 9. PMID:16316661^[1]

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

References

↑ Contreras-Martel C, Job V, Di Guilmi AM, Vernet T, Dideberg O, Dessen A. Crystal structure of penicillin-binding protein 1a (PBP1a) reveals a mutational hotspot implicated in beta-lactam resistance in Streptococcus pneumoniae. J Mol Biol. 2006 Jan 27;355(4):684-96. Epub 2005 Nov 9. PMID:16316661 doi:10.1016/j.jmb.2005.10.030

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2c5w"

@@ Line 1: / Line 1: @@
 ==PENICILLIN-BINDING PROTEIN 1A (PBP-1A) ACYL-ENZYME COMPLEX (CEFOTAXIME) FROM STREPTOCOCCUS PNEUMONIAE==
-<StructureSection load='2c5w' size='340' side='right' caption='[[2c5w]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
+<StructureSection load='2c5w' size='340' side='right'caption='[[2c5w]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2c5w]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Strr6 Strr6]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C5W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2C5W FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2c5w]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae_R6 Streptococcus pneumoniae R6]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C5W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2C5W FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CEF:CEFOTAXIME,+C3+CLEAVED,+OPEN,+BOUND+FORM'>CEF</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.55&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2c6w|2c6w]]</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CEF:CEFOTAXIME,+C3+CLEAVED,+OPEN,+BOUND+FORM'>CEF</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=2c5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c5w OCA], [http://pdbe.org/2c5w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2c5w RCSB], [http://www.ebi.ac.uk/pdbsum/2c5w PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2c5w ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2c5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c5w OCA], [https://pdbe.org/2c5w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2c5w RCSB], [https://www.ebi.ac.uk/pdbsum/2c5w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2c5w ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/PBPA_STRR6 PBPA_STRR6]] Cell wall formation.
+[https://www.uniprot.org/uniprot/PBPA_STRR6 PBPA_STRR6] Cell wall formation.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 31: / Line 31: @@
 ==See Also==
-*[[Penicillin-binding protein|Penicillin-binding protein]]
+*[[Penicillin-binding protein 3D structures|Penicillin-binding protein 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Strr6]]
+[[Category: Large Structures]]
-[[Category: Contreras-Martel, C]]
+[[Category: Streptococcus pneumoniae R6]]
-[[Category: Dessen, A]]
+[[Category: Contreras-Martel C]]
-[[Category: Dideberg, O]]
+[[Category: Dessen A]]
-[[Category: Guilmi, A M.Di]]
+[[Category: Di Guilmi A-M]]
-[[Category: Job, V]]
+[[Category: Dideberg O]]
-[[Category: Vernet, T]]
+[[Category: Job V]]
-[[Category: Antibiotic resistance]]
+[[Category: Vernet T]]
-[[Category: Cell shape]]
-[[Category: Multifunctional enzyme]]
-[[Category: Peptidoglycan synthesis]]
-[[Category: Transferase-hydrolase complex]]

2c5w

From Proteopedia

Current revision

PENICILLIN-BINDING PROTEIN 1A (PBP-1A) ACYL-ENZYME COMPLEX (CEFOTAXIME) FROM STREPTOCOCCUS PNEUMONIAE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox