Neurophysin II

arginine vasopressin (neurophysin II, antidiuretic hormone, diabetes insipidus, neurohypophyseal)
Identifiers
Symbol	AVP
Alt. symbols	ARVP
Entrez	551
HUGO	894
OMIM	192340
RefSeq	NM_000490
UniProt	P01185
Other data
Locus	Chr. 20 p13

Neurophysin II is a carrier protein which binds vasopressin. It is generated from the same precursor as vasopressin.

It can be associated with neurohypophyseal diabetes insipidus.^[1]

Neurophysin II is also known as a stimulator of Prolactin secretion.

Structure

The amino acid sequence of Neurophysin II is:

NH₂ - Ala - Met - Ser - Asp - Leu - Glu - Leu - Arg - Gln - Cys - Leu - Pro - Cys - Gly - Pro - Gly - Gly - Lys - Gly - Arg - Cys - Phe - Gly - Pro - Ser - Ile - Cys - Cys - Ala - Asp - Glu - Leu - Gly - Cys - Phe - Val - Gly - Thr - Ala - Glu - Ala - Leu - Arg - Cys - Gln - Glu - Glu - Asn - Tyr - Leu - Pro - Ser - Pro - Cys - Gln - Ser - Gly - Gln - Lys - Ala - Cys - Gly - Ser - Gly - Gly - Arg - Cys - Ala - Ala - Phe - Gly - Val - Cys - Cys - Asn - Asp - Glu - Ser - Cys - Val - Thr - Glu - Pro - Glu - Cys - Arg - Glu - Gly - Phe - His - Arg - Arg - Ala - OH

(Disulfide - bridge: - 10-54; - 13-27; - 21-44; - 28-34; - 61-73; - 67-85; - 74-79)

Clinical significance

Point mutations in neurophysin II underline most cases of hereditary hypothalamic diabetes insipidus, a disorder resulting from insufficient ADH release into systemic circulation.

References

↑ Christensen JH, Siggaard C, Corydon TJ, et al. (January 2004). "Six novel mutations in the arginine vasopressin gene in 15 kindreds with autosomal dominant familial neurohypophyseal diabetes insipidus give further insight into the pathogenesis". Eur. J. Hum. Genet. 12 (1): 44–51. doi:10.1038/sj.ejhg.5201086. PMID 14673472.

External links

Neurophysin II at the US National Library of Medicine Medical Subject Headings (MeSH)

Proteins: carrier proteins

Fatty acid	FABP1 FABP2 FABP3 FABP4 FABP5 FABP6 FABP7

Hormone	peptide hormone: Follistatin Growth hormone binding protein Insulin-like growth factor binding protein IGFBP1 IGFBP2 IGFBP3 IGFBP4 IGFBP5 IGFBP6 IGFBP7 Neurophysins Neurophysin I II steroid hormone: Sex hormone binding globulin/Androgen binding protein Transcortin Thyroxine-binding globulin Transthyretin

Metal/element	calcium Calcium-binding protein Calmodulin-binding proteins copper Ceruloplasmin iron Iron-binding proteins Transferrin receptor

Vitamin	Retinol binding protein 1 2 3 4 Transcobalamin

Pigment	Plant Light-Harvesting Complex Orange Carotenoid Protein Phycobiliprotein Photosynthetic Reaction Centers Phytochrome Rhodopsin

Other	Acyl carrier protein Adaptor protein Cholesterylester transfer protein F-box protein GTP-binding protein Latent TGF-beta binding protein Major urinary proteins Membrane transport protein Odorant binding protein

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