J. Biochem, 1988, Vol. 104, No. 3 322-325
© 1988 Japanese Biochemical Society
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The Conformation of
-Human Atrial Natriuretic Polypeptide in Solution
*Institute for Protein Research, Osaka Uniuersity Suita, Osaka 56
**Research Laboratories, Fujisawa Phannaceutical Co., Ltd. Kashima, Yodogawa-ku, Osaka, Osaka 532
***Faculty of Science, Kyoto University Sakyo-ku,Kyoto, Kyoto 606
1To whom correspondence should be addressed
The three-dimensional structure of
-human ANP in solution was determined through the combined use of nuclear magnetic resonance spectroscopy and distance geometry. The results are based on distance constraints determined by nuclear Overhauser effect measurements and one disulfide bond. The structure is as follows. Three separate regions, which are Ser1-Cys7, Arg11-Ile15, and Gln18-Tyr28 each have some ordered structure. The remaining parts in the sequences of Gly9-Glyl0 and Gly16-Ala17 act as hinges. And the C-terminal part is folded back toward the cyclic moiety. The conformation of
-hANP reported here is expected to give a better understanding of the relationships between its biological activities and three-dimensional structure.