Solution structure of Human Orexin-A:Regulator of Appetite and Wakefulness

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

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Solution structure of human orexin-A: regulator of appetite and wakefulness.

Kim, H.Y.Hong, E.Kim, J.I.Lee, W.

(2004) J Biochem Mol Biol 37: 565-573

  • DOI: https://doi.org/10.5483/bmbrep.2004.37.5.565
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Orexin-A and orexin-B (hypocretin-1 and hypocretin-2, respectively) are important hypothalamic neuro-peptides, which are encoded by a single mRNA transcript and stimulate food intake as well as regulate wakefulness. Here we determined the solution structure of orexin-A by NMR spectroscopy and by simulated-annealing calculation. The structural features of orexin-A involve two alpha-helices, with the hydrophobic residues disposed to on one side of helix, and hydrophilic residues to the other. A hydrophilic turn induced by two disulfide bonds provides the key difference between orexin-A and -B. With previous mutagenic studies, the derived structure of orexin-A provides us with a structure-functional view for novel drug design.

  • Organizational Affiliation

    Department of Biochemistry, College of Science, Yonsei University, Seoul 120-740, Korea.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Orexin-A33Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O43612 (Homo sapiens)
Explore O43612 
Go to UniProtKB:  O43612
PHAROS:  O43612
GTEx:  ENSG00000161610 
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UniProt GroupO43612
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-19
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-10-09
    Changes: Data collection, Database references, Derived calculations, Source and taxonomy