Amino acid sequence at the phosphorylated site of rat liver fructose-1,6-diphosphatase and phosphorylation of a corresponding synthetic peptide
1979 (English)In: Biochemical and Biophysical Research Communications - BBRC, ISSN 0006-291X, E-ISSN 1090-2104, Vol. 90, no 3, 1064-1072 p.Article in journal (Refereed) Published
Rat liver fructose-1,6-diphosphatase was phosphorylated with (32P)ATP and the catalytic subunit of cyclic AMP-dependent protein kinase from pig muscle. After digestion with pepsin, α-chymotrypsin and subtilisin a peptide with the amino-terminal sequence Ser-Arg-Tyr-(32P)SerP-Leu-Pro-Leu-Pro was isolated. A synthetic unphosphorylated heptapeptide with the same amino acid sequence, ending with leucine, was phosphorylated with an apparent Km of 400 μM, while the apparent Km value for fructose-1,6-diphosphatase was 30 μM (subunit concentration). The Vmax value was 20 times higher for the peptide than for the enzyme.
Place, publisher, year, edition, pages
1979. Vol. 90, no 3, 1064-1072 p.
Other Medical Sciences Other Medical Sciences not elsewhere specified
IdentifiersURN: urn:nbn:se:uu:diva-169296DOI: 10.1016/0006-291X(79)91934-XPubMedID: 228666OAI: oai:DiVA.org:uu-169296DiVA: diva2:506087