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'''NMR SOLUTION STRUCTURE AND FLEXIBILITY OF A PEPTIDE ANTIGEN REPRESENTING THE RECEPTOR BINDING DOMAIN OF PSEUDOMONAS AERUGINOSA'''<br />


==Overview==
==NMR SOLUTION STRUCTURE AND FLEXIBILITY OF A PEPTIDE ANTIGEN REPRESENTING THE RECEPTOR BINDING DOMAIN OF PSEUDOMONAS AERUGINOSA==
A synthetic peptide antigen corresponding to the C-terminus of Pseudomonas, aeruginosa K strain pilin has been studied by one and two-dimensional NMR, techniques. This peptide exists in two isomeric forms which arise as a, result of the I138-P139 amide bond. An ensemble of solution conformations, for the trans form of this 17-residue disulfide-bridged peptide (PAK, 128-144) has been generated using a simulated annealing procedure in, conjunction with distance and torsion angle restraints derived from NMR, data. One major class of backbone conformations has been identified for, this potential synthetic vaccine and indicates the presence of two, beta-turns in the region 134-142. The region that has been established as, the epitope for the monoclonal antibody PK99H is consistent with the, region of the major conformers that exhibit the most definition in the, ensemble (134-140) and also includes a type I beta-turn from residues 134, to 137. The generated structures are also consistent with observed NOEs, characteristic of beta-turns and amide proton temperature coefficient, data, which indicate the presence of two turns between residues 134 and, 142. The presence of secondary structure within the epitope substantiates, the theory that immunogenic regions of proteins are those which contain, surface-exposed structural elements such as beta-turns. Further, implications of the structure on antigenicity and cross-reactivity are, discussed.
<StructureSection load='1pak' size='340' side='right'caption='[[1pak]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1pak]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PAK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PAK FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 1 model</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene></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=1pak FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pak OCA], [https://pdbe.org/1pak PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1pak RCSB], [https://www.ebi.ac.uk/pdbsum/1pak PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1pak ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FMPA_PSEAI FMPA_PSEAI]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
A synthetic peptide antigen corresponding to the C-terminus of Pseudomonas aeruginosa K strain pilin has been studied by one and two-dimensional NMR techniques. This peptide exists in two isomeric forms which arise as a result of the I138-P139 amide bond. An ensemble of solution conformations for the trans form of this 17-residue disulfide-bridged peptide (PAK 128-144) has been generated using a simulated annealing procedure in conjunction with distance and torsion angle restraints derived from NMR data. One major class of backbone conformations has been identified for this potential synthetic vaccine and indicates the presence of two beta-turns in the region 134-142. The region that has been established as the epitope for the monoclonal antibody PK99H is consistent with the region of the major conformers that exhibit the most definition in the ensemble (134-140) and also includes a type I beta-turn from residues 134 to 137. The generated structures are also consistent with observed NOEs characteristic of beta-turns and amide proton temperature coefficient data, which indicate the presence of two turns between residues 134 and 142. The presence of secondary structure within the epitope substantiates the theory that immunogenic regions of proteins are those which contain surface-exposed structural elements such as beta-turns. Further implications of the structure on antigenicity and cross-reactivity are discussed.


==About this Structure==
NMR solution structure and flexibility of a peptide antigen representing the receptor binding domain of Pseudomonas aeruginosa.,McInnes C, Sonnichsen FD, Kay CM, Hodges RS, Sykes BD Biochemistry. 1993 Dec 14;32(49):13432-40. PMID:8257679<ref>PMID:8257679</ref>
1PAK is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa] with OH and ACE as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1PAK OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
NMR solution structure and flexibility of a peptide antigen representing the receptor binding domain of Pseudomonas aeruginosa., McInnes C, Sonnichsen FD, Kay CM, Hodges RS, Sykes BD, Biochemistry. 1993 Dec 14;32(49):13432-40. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8257679 8257679]
</div>
<div class="pdbe-citations 1pak" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pseudomonas aeruginosa]]
[[Category: Pseudomonas aeruginosa]]
[[Category: Single protein]]
[[Category: Hodges RS]]
[[Category: Hodges, R.S.]]
[[Category: Kay CM]]
[[Category: Kay, C.M.]]
[[Category: Mcinnes C]]
[[Category: Mcinnes, C.]]
[[Category: Sonnichsen FD]]
[[Category: Sonnichsen, F.D.]]
[[Category: Sykes BD]]
[[Category: Sykes, B.D.]]
[[Category: ACE]]
[[Category: OH]]
[[Category: fimbrial protein]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 23:38:21 2007''

Latest revision as of 08:20, 25 September 2024

NMR SOLUTION STRUCTURE AND FLEXIBILITY OF A PEPTIDE ANTIGEN REPRESENTING THE RECEPTOR BINDING DOMAIN OF PSEUDOMONAS AERUGINOSANMR SOLUTION STRUCTURE AND FLEXIBILITY OF A PEPTIDE ANTIGEN REPRESENTING THE RECEPTOR BINDING DOMAIN OF PSEUDOMONAS AERUGINOSA

Structural highlights

1pak is a 1 chain structure with sequence from Pseudomonas aeruginosa. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR, 1 model
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

FMPA_PSEAI

Publication Abstract from PubMed

A synthetic peptide antigen corresponding to the C-terminus of Pseudomonas aeruginosa K strain pilin has been studied by one and two-dimensional NMR techniques. This peptide exists in two isomeric forms which arise as a result of the I138-P139 amide bond. An ensemble of solution conformations for the trans form of this 17-residue disulfide-bridged peptide (PAK 128-144) has been generated using a simulated annealing procedure in conjunction with distance and torsion angle restraints derived from NMR data. One major class of backbone conformations has been identified for this potential synthetic vaccine and indicates the presence of two beta-turns in the region 134-142. The region that has been established as the epitope for the monoclonal antibody PK99H is consistent with the region of the major conformers that exhibit the most definition in the ensemble (134-140) and also includes a type I beta-turn from residues 134 to 137. The generated structures are also consistent with observed NOEs characteristic of beta-turns and amide proton temperature coefficient data, which indicate the presence of two turns between residues 134 and 142. The presence of secondary structure within the epitope substantiates the theory that immunogenic regions of proteins are those which contain surface-exposed structural elements such as beta-turns. Further implications of the structure on antigenicity and cross-reactivity are discussed.

NMR solution structure and flexibility of a peptide antigen representing the receptor binding domain of Pseudomonas aeruginosa.,McInnes C, Sonnichsen FD, Kay CM, Hodges RS, Sykes BD Biochemistry. 1993 Dec 14;32(49):13432-40. PMID:8257679[1]

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

References

  1. ↑ McInnes C, Sonnichsen FD, Kay CM, Hodges RS, Sykes BD. NMR solution structure and flexibility of a peptide antigen representing the receptor binding domain of Pseudomonas aeruginosa. Biochemistry. 1993 Dec 14;32(49):13432-40. PMID:8257679
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