1hph

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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1hph FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hph OCA], [http://www.ebi.ac.uk/pdbsum/1hph PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1hph RCSB]</span>
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'''STRUCTURE OF HUMAN PARATHYROID HORMONE 1-37 IN SOLUTION'''
'''STRUCTURE OF HUMAN PARATHYROID HORMONE 1-37 IN SOLUTION'''
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[[Category: Marx, U C.]]
[[Category: Marx, U C.]]
[[Category: Roesch, P.]]
[[Category: Roesch, P.]]
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[[Category: hormone]]
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[[Category: Hormone]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 19:05:39 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:08:39 2008''
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Revision as of 16:05, 2 May 2008

Image:1hph.gif

Template:STRUCTURE 1hph

STRUCTURE OF HUMAN PARATHYROID HORMONE 1-37 IN SOLUTION


Overview

Human parathyroid hormone (hPTH), amino acids Ser1 to Leu37, is biologically active with respect to both receptor binding and activation of adenylate cyclase to influence the serum calcium concentration. It induces DNA synthesis via an unknown signal pathway. We investigated the structure of hPTH(1-37) in H2O/buffer solution under near physiological conditions, that is pH 6.0 and 270 mM salt, by circular dichroism, ultracentrifugation, nuclear magnetic resonance spectroscopy, and molecular dynamics calculations. Complete sequence specific assignments of all 1H resonances were performed by using 1H two-dimensional NMR measurements (double quantum-filtered correlated spectroscopy, nuclear Overhauser effect spectroscopy (NOESY), and total correlation spectroscopy with suppression of NOESY-type cross-peaks spectra). hPTH(1-37) obtained helical structure and showed hydrophobic interactions defining a tertiary structure. The NH2-terminal four amino acids of hPTH(1-37) did not show a stable conformation. Evidence for an alpha-helical region between Ile5 and Asn10 was found. This region was followed by a flexible link (Gly12, Lys13) and a well defined turn region, His14 to Ser17. The latter was stabilized by hydrophobic interactions between Trp23 and Leu15. Ser17 through at least Leu28 formed an alpha-helix. Arg20 and Lys27 were involved in the core built by His14 to Ser17. Unrestrained molecular dynamics simulations indicated that the structure was stable on the 200 ps time scale.

About this Structure

1HPH is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of human parathyroid hormone 1-37 in solution., Marx UC, Austermann S, Bayer P, Adermann K, Ejchart A, Sticht H, Walter S, Schmid FX, Jaenicke R, Forssmann WG, et al., J Biol Chem. 1995 Jun 23;270(25):15194-202. PMID:7797503 Page seeded by OCA on Fri May 2 19:05:39 2008

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