2b4n

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[[Image:2b4n.png|left|200px]]
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==Solution Structure of Glucose-Dependent Insulinotropic Polypeptide==
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<StructureSection load='2b4n' size='340' side='right' caption='[[2b4n]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2b4n]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2B4N OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2B4N FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2b4n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2b4n OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2b4n RCSB], [http://www.ebi.ac.uk/pdbsum/2b4n PDBsum]</span></td></tr>
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<table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Glucose-dependent insulinotropic polypeptide (GIP) is an incretin hormone that stimulates the secretion of insulin after ingestion of food. GIP also promotes the synthesis of fatty acids in adipose tissue. Therefore, it is not surprising that numerous literature reports have shown that GIP is linked to diabetes and obesity-related diseases. In this study, we present the solution structure of GIP in water determined by NMR spectroscopy. The calculated structure is characterized by the presence of an alpha-helical motif between residues Ser(11) and Gln(29). The helical conformation of GIP is further supported by CD spectroscopic studies. Six GIP-(1-42)Ala(1-7) analogues were synthesized by replacing individual N-terminal residues with alanine. Alanine scan studies of these N-terminal residues showed that the GIP-(1-42)Ala(6) was the only analogue to show insulin-secreting activity similar to that of the native GIP. However, when compared with glucose, its insulinotropic ability was reduced. For the first time, these NMR and modeling results contribute to the understanding of the structural requirements for the biological activity of GIP.
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{{STRUCTURE_2b4n| PDB=2b4n | SCENE= }}
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NMR and alanine scan studies of glucose-dependent insulinotropic polypeptide in water.,Alana I, Parker JC, Gault VA, Flatt PR, O'Harte FP, Malthouse JP, Hewage CM J Biol Chem. 2006 Jun 16;281(24):16370-6. Epub 2006 Apr 18. PMID:16621806<ref>PMID:16621806</ref>
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===Solution Structure of Glucose-Dependent Insulinotropic Polypeptide===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_16621806}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[2b4n]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2B4N OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:016621806</ref><references group="xtra"/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Alana, I.]]
[[Category: Alana, I.]]

Revision as of 06:55, 9 June 2014

Solution Structure of Glucose-Dependent Insulinotropic Polypeptide

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