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[[Image:1qbf.jpg|left|200px]]<br /><applet load="1qbf" size="350" color="white" frame="true" align="right" spinBox="true"
caption="1qbf" />
'''NMR SOLUTION STRUCTURE OF PORCINE PEPTIDE YY'''<br />


==Overview==
==NMR SOLUTION STRUCTURE OF PORCINE PEPTIDE YY==
Peptide YY (PYY) belongs to a family of peptides including neuropeptide Y (NPY) and pancreatic peptide (PP) that regulate numerous functions through both central and peripheral receptors. The solution structure of these peptides is hypothesized to be critically important in receptor selectivity and activation, based on prior demonstration of a stable tertiary conformation of PP called the "PP-fold". Circular dichroism (CD) spectra show a pH-dependent structural transition in the pH range 3-4. Thus we describe the tertiary structure of porcine PYY in water at pH 5.5, 25 degrees C, and 150 mM NaCl, as determined from 2D (1)H NMR data recorded at 500 MHz. A constraint set consisting of 396 interproton distances from NOE data was used as input for distance geometry, simulated annealing, and restrained energy minimization calculations in X-PLOR. The RMSDs of the 20 X-PLOR-generated structures were 0.71 +/- 0.14 and 1.16 +/- 0.17 A, respectively, for backbone and heavy atom overlays of residues 1-34. The resulting structure consists of two C-terminal helical segments from residues 17 to 22 and 25 to 33 separated by a kink at residues 23, 24, and 25, a turn centered around residues 12-14, and the N-terminus folded near residues 30 and 31. The well-defined portions of the PYY structure reported here bear a marked similarity to the structure of PP. Our findings strongly support the importance of the stable folded structure of this family of peptides for binding and activation of Y receptor subtypes.
<StructureSection load='1qbf' size='340' side='right'caption='[[1qbf]]' scene=''>
 
== Structural highlights ==
==About this Structure==
<table><tr><td colspan='2'>[[1qbf]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QBF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QBF FirstGlance]. <br>
1QBF is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ] with <scene name='pdbligand=NH2:'>NH2</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QBF OCA].  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
 
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></td></tr>
==Reference==
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qbf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qbf OCA], [https://pdbe.org/1qbf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qbf RCSB], [https://www.ebi.ac.uk/pdbsum/1qbf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qbf ProSAT]</span></td></tr>
Solution structure of monomeric peptide YY supports the functional significance of the PP-fold., Keire DA, Kobayashi M, Solomon TE, Reeve JR Jr, Biochemistry. 2000 Aug 15;39(32):9935-42. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10933813 10933813]
</table>
[[Category: Single protein]]
== Function ==
[[Category: Jr., J R.Reeve.]]
[https://www.uniprot.org/uniprot/PYY_PIG PYY_PIG] This gut peptide inhibits exocrine pancreatic secretion, has a vasoconstrictory action and inhibitis jejunal and colonic mobility.
[[Category: Keire, D A.]]
== Evolutionary Conservation ==
[[Category: Kobayashi, M.]]
[[Image:Consurf_key_small.gif|200px|right]]
[[Category: Solomon, T E.]]
Check<jmol>
[[Category: NH2]]
  <jmolCheckbox>
[[Category: pancreatic hormone]]
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qb/1qbf_consurf.spt"</scriptWhenChecked>
[[Category: pp-fold]]
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 
    <text>to colour the structure by Evolutionary Conservation</text>
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:37:53 2008''
  </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/main_output.php?pdb_ID=1qbf ConSurf].
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Sus scrofa]]
[[Category: Keire DA]]
[[Category: Kobayashi M]]
[[Category: Reeve Jr JR]]
[[Category: Solomon TE]]

Latest revision as of 09:03, 17 April 2024

NMR SOLUTION STRUCTURE OF PORCINE PEPTIDE YYNMR SOLUTION STRUCTURE OF PORCINE PEPTIDE YY

Structural highlights

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

Function

PYY_PIG This gut peptide inhibits exocrine pancreatic secretion, has a vasoconstrictory action and inhibitis jejunal and colonic mobility.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Drag the structure with the mouse to rotate

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