Proteolytic release of dehydrodolichyl diphosphate synthase from pig testis microsomes

Akira Kurisaki, Hiroshi Sagami, Kyozo Ogura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Pig testicular dehydrodolichyl diphosphate synthase was released in a soluble form out of microsomes by controlled proteolysis with trypsin or papain. Approximately 25% of the microsomal enzyme activity was recovered in the 115,000 × g supernatant fraction when the microsomes were treated with trypsin at 4°C for 1 h. Similar proteolytic release of microsomal enzyme was also observed with the treatment with papain. The Km, optimal pH, Mg2+ dependency, and ion strength dependency of the enzyme released by trypsin were similar to those of the microsomal enzyme. The microsomal enzyme was active even in the absence of detergents, while the released enzyme required detergents for activity. Gel filtration of the released enzyme gave a peak of dehydrodolichyl diphosphate synthase activity, which appeared between 150-kDa and 50-kDa molecular mass markers.

Original languageEnglish
Pages (from-to)1109-1114
Number of pages6
JournalBioscience, Biotechnology and Biochemistry
Volume60
Issue number7
DOIs
Publication statusPublished - 1996 Jan

Keywords

  • Dehydrodolichyl diphosphate synthase
  • Dolichol
  • Microsomes
  • Trypsin
  • Z, Z, E-geranylgeranyl diphosphate

ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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