1qmf

From Proteopedia

(Difference between revisions)

Revision as of 08:13, 28 February 2018

PENICILLIN-BINDING PROTEIN 2X (PBP-2X) ACYL-ENZYME COMPLEX

Structural highlights

1qmf is a 1 chain structure with sequence from "diplococcus_pneumoniae"_(klein_1884)_weichselbaum_1886 "diplococcus pneumoniae" (klein 1884) weichselbaum 1886. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Gene:	PBP2X ("Diplococcus pneumoniae" (Klein 1884) Weichselbaum 1886)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PBPX_STRPN] Penicillin-binding proteins (PBPs) function in the late steps of murein biosynthesis. Beta-lactams inactivate the PBPs by acylating an essential serine residue in the active site of these proteins.

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

Penicillin-binding proteins (PBPs), the primary targets for beta-lactam antibiotics, are periplasmic membrane-attached proteins responsible for the construction and maintenance of the bacterial cell wall. Bacteria have developed several mechanisms of resistance, one of which is the mutation of the target enzymes to reduce their affinity for beta-lactam antibiotics. Here, we describe the structure of PBP2x from Streptococcus pneumoniae determined to 2.4 A. In addition, we also describe the PBP2x structure in complex with cefuroxime, a therapeutically relevant antibiotic, at 2.8 A. Surprisingly, two antibiotic molecules are observed: one as a covalent complex with the active-site serine residue, and a second one between the C-terminal and the transpeptidase domains. The structure of PBP2x reveals an active site similar to those of the class A beta-lactamases, albeit with an absence of unambiguous deacylation machinery. The structure highlights a few amino acid residues, namely Thr338, Thr550 and Gln552, which are directly related to the resistance phenomenon.

The crystal structure of the penicillin-binding protein 2x from Streptococcus pneumoniae and its acyl-enzyme form: implication in drug resistance.,Gordon E, Mouz N, Duee E, Dideberg O J Mol Biol. 2000 Jun 2;299(2):477-85. PMID:10860753^[1]

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

References

↑ Gordon E, Mouz N, Duee E, Dideberg O. The crystal structure of the penicillin-binding protein 2x from Streptococcus pneumoniae and its acyl-enzyme form: implication in drug resistance. J Mol Biol. 2000 Jun 2;299(2):477-85. PMID:10860753 doi:10.1006/jmbi.2000.3740

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/1qmf"

@@ Line 1: / Line 1: @@
 ==PENICILLIN-BINDING PROTEIN 2X (PBP-2X) ACYL-ENZYME COMPLEX==
 <StructureSection load='1qmf' size='340' side='right' caption='[[1qmf]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CES:2-[CARBOXY-(2-FURAN-2-YL-2-METHOXYIMINO-ACETYLAMINO)-METHYL]-5-METHYL-3,6-DIHYDRO-2H-[1,3]THIAZINE-4-CARBOXYLIC+ACID'>CES</scene>, <scene name='pdbligand=KEF:CEFUROXIME+(OCT-3-ENE+FORM)'>KEF</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PBP2X ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1313 "Diplococcus pneumoniae" (Klein 1884) Weichselbaum 1886])</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=1qmf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qmf OCA], [http://pdbe.org/1qmf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qmf RCSB], [http://www.ebi.ac.uk/pdbsum/1qmf PDBsum]</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=1qmf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qmf OCA], [http://pdbe.org/1qmf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qmf RCSB], [http://www.ebi.ac.uk/pdbsum/1qmf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qmf ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qm/1qmf_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qm/1qmf_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1qmf

From Proteopedia

Revision as of 08:13, 28 February 2018

PENICILLIN-BINDING PROTEIN 2X (PBP-2X) ACYL-ENZYME COMPLEX

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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