Name
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Orexin B, Rat, Mouse
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Other Name
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Sequence (Single letter abbreviations)
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RPGPPGLQGRLQRLLQANGNHAAGILTM-NH2
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Sequence(Three letter abbreviations)
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{ARG}{PRO}{GLY}{PRO}{PRO}{GLY}{LEU}{GLN}{GLY}{ARG}{LEU}{GLN}{ARG}{LEU}{LEU}{GLN}{ALA}{ASN}{GLY}{ASN}{HIS}{ALA}{ALA}{GLY}{ILE}{LEU}{THR}{MET}-NH2
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C-port
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NH2
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Basic description
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Orexin B is a hypothalamatic neuropeptide stimulating food intake in rats. Orexin B activates OX2 receptors. Both OX1 and OX2 receptors are involved in maintaining arousal. OX2 receptors appear to be inhibitory autoreceptors on orexin-containing neurons. Orexin B stimulates food consumption in a similar manner to orexin A, but the effect did not last as long as that of orexin A. The affinity of orexin B for the OX1 receptor is significantly lower than that of orexin A. Binding affinities for the OX2 receptor are similar for orexin A and B.
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Solubility
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Soluble in water. The contents of this vial have been accurately determined. Both the stopper and the vial have been siliconized. Do not attempt to weight out a smaller portion of the contents.
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The molecular weight
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2936.400
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Chemical formula
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C126H215N45O34S
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The purity
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> 95%
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Storage conditions
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Store at -20°C.
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Annotation
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Documents
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Figures
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Reference
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Haj-Dahmane S, Shen RY. The wake-promoting peptide orexin-B inhibits glutamatergic transmission to dorsal raphe nucleus serotonin neurons through retrograde endocannabinoid signaling. J. Neurosci. Jan 2005; 25(4): 896-905.
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