منابع مشابه
Ribonuclease in Bovine Milk
The RNase (EC 2.7.7.16) in bovine milk was partially purified from milk whey. The basic properties and the hydrolyzing specificity of this enzyme were studied. This enzyme was heat stable. When RNA was used as the substrate, the pH optimum was 7.5 and 3'nucleotides were produced, but the extent of the hydrolysis stopped at 31 per cent and core was left. C! and U! were hydrolyzed but purine cycl...
متن کاملIn vitro biological activity of bovine milk ribonuclease-4.
Several members of the ribonuclease superfamily possess a variety of interesting biological properties, including ribonucleolytic, angiogenic, antiproliferative, cytotoxic, embryotoxic, aspermatogenic and antitumoral activity. In this study, we report the purification from bovine milk of a protein with structural and enzymatic properties very similar to those of ribonuclease-4 (RNase-4), which ...
متن کاملEffect of bovine seminal ribonuclease and bovine pancreatic ribonuclease A on bovine oocyte maturation.
Bovine seminal ribonuclease (BS-RNase) contains the MxM (noncovalent dimer) and M=M (free monomer) in constant ratio. The aim of this work was to evaluate the effect of BS-RNase, its monomer and dimer forms, and also various mutants of this enzyme on meiotic completion in cattle oocytes. It was found that BS-RNase has irreversible effects on the meiotic maturation of bovine oocytes in vitro, pa...
متن کاملBovine milk glycome.
Bovine milk oligosaccharides have several potentially important biological activities including the prevention of pathogen binding to the intestinal epithelial and as nutrients for beneficial bacteria. It has been suggested that milk oligosaccharides are an important source of complex carbohydrates as supplements for the food and the pharmaceutical industries. However, only a small number of st...
متن کاملProtease and ribonuclease activities in bovine pituitary lobes.
1. Acid and alkaline protease activities in bovine anterior and posterior pituitary lobes were reinvestigated by measurement of u.v. and Folin-Ciocalteu colour values of trichloroacetic acid-soluble digestion products of denatured haemoglobin. 2. Both lobes of the pituitary gland contain a cathepsin with a pH optimum at 3.8. 3. When release of u.v.-absorbing material was used as the assay there...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1965
ISSN: 0002-1369
DOI: 10.1080/00021369.1965.10858440