NMR structure of vasoactive intestinal peptide in DPC Micelle

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

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Structural difference of vasoactive intestinal peptide in two distinct membrane-mimicking environments

Umetsu, Y.Tenno, T.Goda, N.Shirakawa, M.Ikegami, T.Hiroaki, H.

(2011) Biochim Biophys Acta 1814: 724-730

  • DOI: https://doi.org/10.1016/j.bbapap.2011.03.009
  • Primary Citation of Related Structures:  
    2RRH, 2RRI

  • PubMed Abstract: 

    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 α-helix, micelle-bound VIP-G has a curved α-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.

  • Organizational Affiliation

    Graduate School of Medicine, Kobe University, Chuo-ku, Kobe, Hyogo, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vasoactive intestinal peptide29Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01282 (Homo sapiens)
Explore P01282 
Go to UniProtKB:  P01282
PHAROS:  P01282
GTEx:  ENSG00000146469 
Entity Groups  
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UniProt GroupP01282
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-12-28
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Data collection, Database references, Other