2rrh: Difference between revisions
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==NMR structure of vasoactive intestinal peptide in Methanol== | ==NMR structure of vasoactive intestinal peptide in Methanol== | ||
<StructureSection load='2rrh' size='340' side='right' caption='[[2rrh]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | <StructureSection load='2rrh' size='340' side='right'caption='[[2rrh]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2rrh]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RRH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2RRH FirstGlance]. <br> | <table><tr><td colspan='2'>[[2rrh]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RRH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2RRH FirstGlance]. <br> | ||
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== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/VIP_HUMAN VIP_HUMAN]] VIP causes vasodilation, lowers arterial blood pressure, stimulates myocardial contractility, increases glycogenolysis and relaxes the smooth muscle of trachea, stomach and gall bladder.<ref>PMID:15013843</ref> PHM and PHV also cause vasodilation. PHM-27 is a potent agonist of the calcitonin receptor CALCR, with similar efficacy as calcitonin.<ref>PMID:15013843</ref> | [[http://www.uniprot.org/uniprot/VIP_HUMAN VIP_HUMAN]] VIP causes vasodilation, lowers arterial blood pressure, stimulates myocardial contractility, increases glycogenolysis and relaxes the smooth muscle of trachea, stomach and gall bladder.<ref>PMID:15013843</ref> PHM and PHV also cause vasodilation. PHM-27 is a potent agonist of the calcitonin receptor CALCR, with similar efficacy as calcitonin.<ref>PMID:15013843</ref> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Vasoactive intestinal peptide (VIP) is a 28-amino acid neuropeptide which belongs to a glucagon/secretin superfamily, the ligand of class II G protein-coupled receptors. Knowledge for the conformation of VIP bound to membrane is important because the receptor activation is initiated by membrane binding of VIP. We have previously observed that VIP-G (glycine-extended VIP) is unstructured in solution, as evidenced by the limited NMR chemical shift dispersion. In this study, we determined the three-dimensional structures of VIP-G in two distinct membrane-mimicking environments. Although these are basically similar structures composed of a disordered N-terminal region and a long alpha-helix, micelle-bound VIP-G has a curved alpha-helix. The side chains of residues Phe(6), Tyr(10), Leu(13), and Met(17) found at the concave face form a hydrophobic patch in the micelle-bound state. The structural differences in two distinct membrane-mimicking environments show that the micelle-bound VIP-G localized at the water-micelle boundary with these side chains toward micelle interior. In micelle-bound PACAP-38 (one of the glucagon/secretin superfamily peptide) structure, the identical hydrophobic residues form the micelle-binding interface. This result suggests that these residues play an important role for the membrane binding of VIP and PACAP. | |||
Structural difference of vasoactive intestinal peptide in two distinct membrane-mimicking environments.,Umetsu Y, Tenno T, Goda N, Shirakawa M, Ikegami T, Hiroaki H Biochim Biophys Acta. 2011 May;1814(5):724-30. Epub 2011 Mar 23. PMID:21439408<ref>PMID:21439408</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2rrh" style="background-color:#fffaf0;"></div> | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Human]] | [[Category: Human]] | ||
[[Category: Large Structures]] | |||
[[Category: Goda, N]] | [[Category: Goda, N]] | ||
[[Category: Hiroaki, H]] | [[Category: Hiroaki, H]] | ||
Revision as of 08:34, 1 January 2020
NMR structure of vasoactive intestinal peptide in Methanol
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