2olb

From Proteopedia

(Difference between revisions)

Revision as of 07:00, 22 August 2018

OLIGOPEPTIDE BINDING PROTEIN (OPPA) COMPLEXED WITH TRI-LYSINE

Structural highlights

2olb is a 2 chain structure with sequence from Salmonella typhimurium. This structure supersedes the now removed PDB entry 1olb. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[OPPA_SALTY] This protein is a component of the oligopeptide permease, a binding protein-dependent transport system, it binds peptides up to five amino acids long with high affinity.

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

BACKGROUND: The periplasmic oligopeptide-binding protein OppA has a remarkably broad substrate specificity, binding peptides of two or five amino-acid residues with high affinity, but little regard to sequence. It is therefore an ideal system for studying how different chemical groups can be accommodated in a protein interior. The ability of the protein to bind peptides of different lengths has been studied by co-crystallising it with different ligands. RESULTS: Crystals of OppA from Salmonella typhimurium complexed with the peptides Lys-Lys-Lys (KKK) and Lys-Lys-Lys-Ala (KKKA) have been grown in the presence of uranyl ions which form important crystal contacts. These structures have been refined to 1.4 A and 2.1 A, respectively. The ligands are completely enclosed, their side chains pointing into large hydrated cavities and making few strong interactions with the protein. CONCLUSIONS: Tight peptide binding by OppA arises from strong hydrogen bonding and electrostatic interactions between the protein and the main chain of the ligand. Different basic side chains on the protein form salt bridges with the C terminus of peptide ligands of different lengths.

The crystal structures of the oligopeptide-binding protein OppA complexed with tripeptide and tetrapeptide ligands.,Tame JR, Dodson EJ, Murshudov G, Higgins CF, Wilkinson AJ Structure. 1995 Dec 15;3(12):1395-406. PMID:8747465^[1]

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

References

↑ Tame JR, Dodson EJ, Murshudov G, Higgins CF, Wilkinson AJ. The crystal structures of the oligopeptide-binding protein OppA complexed with tripeptide and tetrapeptide ligands. Structure. 1995 Dec 15;3(12):1395-406. PMID:8747465

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/2olb"

Categories: Salmonella typhimurium | Tame, J | Wilkinson, A J | Periplasmic

@@ Line 1: / Line 1: @@
 ==OLIGOPEPTIDE BINDING PROTEIN (OPPA) COMPLEXED WITH TRI-LYSINE==
 <StructureSection load='2olb' size='340' side='right' caption='[[2olb]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2olb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1olb 1olb]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OLB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2OLB FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2olb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_typhimurium Salmonella typhimurium]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1olb 1olb]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OLB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2OLB FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=IUM:URANYL+(VI)+ION'>IUM</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=2olb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2olb OCA], [http://pdbe.org/2olb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2olb RCSB], [http://www.ebi.ac.uk/pdbsum/2olb 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=2olb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2olb OCA], [http://pdbe.org/2olb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2olb RCSB], [http://www.ebi.ac.uk/pdbsum/2olb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2olb ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ol/2olb_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ol/2olb_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 34: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]
+[[Category: Salmonella typhimurium]]
 [[Category: Tame, J]]
 [[Category: Wilkinson, A J]]
 [[Category: Periplasmic]]

2olb

From Proteopedia

Revision as of 07:00, 22 August 2018

OLIGOPEPTIDE BINDING PROTEIN (OPPA) COMPLEXED WITH TRI-LYSINE

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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