作者: Markus BUCHLER , Ursula TISLJAR , Dieter H. WOLF
DOI: 10.1111/J.1432-1033.1994.TB19978.X
关键词: Protein degradation 、 Thimet oligopeptidase 、 Metalloendopeptidase 、 Nucleic acid sequence 、 Saccharolysin 、 Biochemistry 、 Biology 、 Open reading frame 、 Oligopeptidase 、 Mutant 、 Molecular biology
摘要: The yeast PRD1 gene, encoding proteinase yscD, was cloned by complementation of the prd1-6 point mutation. Sequencing gene revealed an open reading frame 2.136 kb, a protein 712 amino acids with calculated molecular mass 81.8 kDa. sequence HEGLG beginning at residue 501 represents HEXXH motif, unique for zinc metallo-peptidases. Sequence comparison complete identity yscD recently published chromosome III. We found 34.8% between and rat metalloendopeptidase (thimet oligopeptidase, EP 24.15). Proteinase hydrolyzes several chromogenic fluorogenic peptides that are substrates thimet oligopeptidase. N-[1-(RS)-carboxy-3-phenylpropyl]-Ala-Ala-Phe-p-aminobenzoic acid, compound designed as specific inhibitor 24.15, is also strong enzyme. non-vacuolar 3–5% total enzyme activity can be detected in intermembrane space mitochondria. In mutant carrying deletion no detectable cytoplasm mitochondria these cells. They do not show any grossly altered phenotype but exhibit decrease intracellular degradation peptides. This suggests function late stages degradation.