1cq0: Difference between revisions
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'''SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B'SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B '''' | {{Structure | ||
|PDB= 1cq0 |SIZE=350|CAPTION= <scene name='initialview01'>1cq0</scene> | |||
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|LIGAND= | |||
|ACTIVITY= | |||
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'''SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B'SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B '''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1CQ0 is a [ | 1CQ0 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CQ0 OCA]. | ||
==Reference== | ==Reference== | ||
Solution structure of a new hypothalamic neuropeptide, human hypocretin-2/orexin-B., Lee JH, Bang E, Chae KJ, Kim JY, Lee DW, Lee W, Eur J Biochem. 1999 Dec;266(3):831-9. PMID:[http:// | Solution structure of a new hypothalamic neuropeptide, human hypocretin-2/orexin-B., Lee JH, Bang E, Chae KJ, Kim JY, Lee DW, Lee W, Eur J Biochem. 1999 Dec;266(3):831-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10583376 10583376] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: solution structure]] | [[Category: solution structure]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:27:28 2008'' | ||
Revision as of 08:27, 20 March 2008
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SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B'SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B '
Overview
Orexin-A and orexin-B (also called hypocretin-1 and hypocretin-2, respectively) are novel hypothalamic neuropeptides encoded by a single mRNA transcript; they stimulate food intake. We have determined the three-dimensional solution structure of human hypocretin-2/orexin-B using two-dimensional 1H-NMR data and dynamical simulated annealing calculations. On the basis of NOEs, 3JHNalpha coupling constants and hydrogen-deuterium exchange rates together with chemical shift indices, human hypocretin-2/orexin-B was deduced to consist of two alpha-helices connected with a short linker in both H2O and 30% trifluoroethanol solutions. The helical axis of helix I is oriented about 60-80 degrees relative to helix II. Hybrid distance geometry and simulated-annealing protocols were used to generate an ensemble of 30 structures with no constraint violations greater than 0.03 nm for distances and 3 degrees for angles. In addition, human hypocretin-2/orexin-B shares a similar secondary-structural motif with human neuropeptide Y. This result can form the basis for further study on ligand-receptor recognition of human orexin receptors.
Disease
Known diseases associated with this structure: Narcolepsy OMIM:[602358], Porphyria variegata OMIM:[600923]
About this Structure
1CQ0 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Solution structure of a new hypothalamic neuropeptide, human hypocretin-2/orexin-B., Lee JH, Bang E, Chae KJ, Kim JY, Lee DW, Lee W, Eur J Biochem. 1999 Dec;266(3):831-9. PMID:10583376
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