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Bioorg Khim. 2000 Jun;26(6):433-41.

[Deletion mutants of the natriuretic peptide receptor type B: expression of cDNA, purification and characteristics of proteins].

[Article in Russian]

Author information

1
Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia. solov@ibch.siobc.ras.ru

Abstract

The C type natriuretic peptide (CNP) is a peptide hormone stimulating vasorelaxation and inhibiting cell proliferation. CNP activates the type B natriuretic peptide receptor (NPR-B), known as the guanylate cyclase B membrane enzyme, which results in the cGMP release. To study functional properties of NPR-B, its gene fragments were expressed in methylotrophic yeasts Pichia pastoris. Conditions were found providing for secretion of functionally active recombinant proteins NPR-Bs and NPR-B1 into the cultural medium in a yield of 25 mg/ml culture. Their specific activity was 0.97 and 0.93 mumol cGMP min-1 mg-1 protein, respectively. It was shown that NPR-B belongs to the family of Ser/Thr protein kinases and can be autophosphorylated at the serine residues.

PMID:
10923191
[Indexed for MEDLINE]

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