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

Autor: O V, Solov'eva, D L, Kakuev, N V, Gibanova, V M, Lipkin
Rok vydání: 2000
Předmět:
Zdroj: Bioorganicheskaia khimiia. 26(6)
ISSN: 0132-3423
Popis: 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.
Databáze: OpenAIRE