1psp: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| (10 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
< | ==PANCREATIC SPASMOLYTIC POLYPEPTIDE: FIRST THREE-DIMENSIONAL STRUCTURE OF A MEMBER OF THE MAMMALIAN TREFOIL FAMILY OF PEPTIDES== | ||
<StructureSection load='1psp' size='340' side='right'caption='[[1psp]], [[Resolution|resolution]] 2.50Å' scene=''> | |||
You may | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1psp]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PSP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PSP FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</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=1psp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1psp OCA], [https://pdbe.org/1psp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1psp RCSB], [https://www.ebi.ac.uk/pdbsum/1psp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1psp ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/TFF2_PIG TFF2_PIG] Inhibits gastrointestinal motility and gastric acid secretion. Could function as a structural component of gastric mucus, possibly by stabilizing glycoproteins in the mucus gel through interactions with carbohydrate side chains. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ps/1psp_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</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=1psp ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
BACKGROUND: The trefoil peptides are a rapidly growing family of peptides, mainly found in the gastrointestinal tract. There is circumstantial evidence that they stabilize the mucus layer, and may affect the rate of healing of the mucosal epithelium. RESULTS: We have determined the structure of porcine pancreatic spasmolytic polypeptide (PSP) to 2.5 A resolution. The polypeptide contains two trefoil domains. The domain structure is compact, and is composed of a central short antiparallel beta-sheet with one short helix above and one below it. This is a novel motif. The two domains are related by two-fold symmetry, and each domain contains a cleft. CONCLUSIONS: The cleft within each domain could accommodate a polysaccharide chain, and may therefore be responsible for binding mucin glycoproteins. We suggest that PSP may cross-link glycoproteins, explaining its ability to stabilize the mucus layer. | |||
Pancreatic spasmolytic polypeptide: first three-dimensional structure of a member of the mammalian trefoil family of peptides.,Gajhede M, Petersen TN, Henriksen A, Petersen JF, Dauter Z, Wilson KS, Thim L Structure. 1993 Dec 15;1(4):253-62. PMID:8081739<ref>PMID:8081739</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1psp" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Large Structures]] | ||
== | |||
< | |||
[[Category: Sus scrofa]] | [[Category: Sus scrofa]] | ||
[[Category: Dauter | [[Category: Dauter Z]] | ||
[[Category: Gajhede | [[Category: Gajhede M]] | ||
[[Category: Henriksen | [[Category: Henriksen A]] | ||
[[Category: Petersen | [[Category: Petersen JFW]] | ||
[[Category: Petersen | [[Category: Petersen TN]] | ||
[[Category: Thim | [[Category: Thim L]] | ||
[[Category: Wilson | [[Category: Wilson KS]] | ||
Latest revision as of 10:34, 23 October 2024
PANCREATIC SPASMOLYTIC POLYPEPTIDE: FIRST THREE-DIMENSIONAL STRUCTURE OF A MEMBER OF THE MAMMALIAN TREFOIL FAMILY OF PEPTIDESPANCREATIC SPASMOLYTIC POLYPEPTIDE: FIRST THREE-DIMENSIONAL STRUCTURE OF A MEMBER OF THE MAMMALIAN TREFOIL FAMILY OF PEPTIDES
Structural highlights
FunctionTFF2_PIG Inhibits gastrointestinal motility and gastric acid secretion. Could function as a structural component of gastric mucus, possibly by stabilizing glycoproteins in the mucus gel through interactions with carbohydrate side chains. 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 PubMedBACKGROUND: The trefoil peptides are a rapidly growing family of peptides, mainly found in the gastrointestinal tract. There is circumstantial evidence that they stabilize the mucus layer, and may affect the rate of healing of the mucosal epithelium. RESULTS: We have determined the structure of porcine pancreatic spasmolytic polypeptide (PSP) to 2.5 A resolution. The polypeptide contains two trefoil domains. The domain structure is compact, and is composed of a central short antiparallel beta-sheet with one short helix above and one below it. This is a novel motif. The two domains are related by two-fold symmetry, and each domain contains a cleft. CONCLUSIONS: The cleft within each domain could accommodate a polysaccharide chain, and may therefore be responsible for binding mucin glycoproteins. We suggest that PSP may cross-link glycoproteins, explaining its ability to stabilize the mucus layer. Pancreatic spasmolytic polypeptide: first three-dimensional structure of a member of the mammalian trefoil family of peptides.,Gajhede M, Petersen TN, Henriksen A, Petersen JF, Dauter Z, Wilson KS, Thim L Structure. 1993 Dec 15;1(4):253-62. PMID:8081739[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
| ||||||||||||||||||