1cq0

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{{STRUCTURE_1cq0| PDB=1cq0 | SCENE= }}
{{STRUCTURE_1cq0| PDB=1cq0 | SCENE= }}
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'''SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B'SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B ''''
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===SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B'SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B '===
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==Overview==
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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.
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(as it appears on PubMed at http://www.pubmed.gov), where 10583376 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10583376}}
==About this Structure==
==About this Structure==
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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].
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1CQ0 is a [[Single protein]] structure of 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=1CQ0 OCA].
==Reference==
==Reference==
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[[Category: Obesity]]
[[Category: Obesity]]
[[Category: Solution structure]]
[[Category: Solution structure]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:59:27 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 21:05:39 2008''

Revision as of 18:05, 30 June 2008

Image:1cq0.png

Template:STRUCTURE 1cq0

SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B'SOLUTION STRUCTURE OF A HUMAN HYPOCRETIN-2/OREXIN-B '

Template:ABSTRACT PUBMED 10583376

About this Structure

1CQ0 is a Single protein structure of sequence from Homo sapiens. Full experimental 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

Page seeded by OCA on Mon Jun 30 21:05:39 2008

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