STUDIES ON BOVINE ENTEROVIRUSES
نویسندگان
چکیده
منابع مشابه
Molecular-based reclassification of the bovine enteroviruses.
Bovine enteroviruses are currently classified into two serotypes within the species Bovine enterovirus (BEV). Comparison of the sequences of six American and eleven German BEV isolates with published BEV sequences revealed the necessity to revise the taxonomy of these viruses. Molecular data indicate that the bovine enteroviruses are composed of two clusters (designated BEV-A and -B) each with ...
متن کاملBovine enteroviruses as indicators of fecal contamination.
Surface waters frequently have been contaminated with human enteric viruses, and it is likely that animal enteric viruses have contaminated surface waters also. Bovine enteroviruses (BEV), found in cattle worldwide, usually cause asymptomatic infections and are excreted in the feces of infected animals in large numbers. In this study, the prevalence and genotype of BEV in a closed herd of cattl...
متن کاملSpecificity studies on bovine adrenal estrogen sulfotransferase.
The substrate requirements for estrogen sulfotransferase have been examined. Structural changes in all four rings of the estratriene nucleus affected sulfation. The V,,, of the reaction was increased from 1.4 to 3.2 times over that of estrone by nitro groups at positions 2 or 4, or the 6-keto function, while in the presence of a Z-amino group sulfation decreased to 1’ ,,3 and saturation of the ...
متن کاملStudies on Bovine Rumen Bacterial Urease 1
The propert ies of rumen urease were studied. In the absence of high concentrations of dithiothreitol enzyme activity was rapidly lost; in its presence, the enzyme could be solubilized and purified in high yield. Maximum activity was observed between pH 7 and 8.5. The Km for urea with partially purified enzyme was .004 M with Vmax of 300 to 400 #moles/mg/hr. No divalent metal ion requirement or...
متن کاملStructural Studies on Bovine Growth Hormone
Purified bovine growth hormone, consisting of a single polypeptide chain, has been found to contain NHz-terminal alanine, phenylalanine, and methionine in nearly equal amounts. The minimum molecular weight calculated from its amino acid composition is 20,846. Five unique fragments have been prepared from bovine growth hormone by cleavage at 4 methionyl residues with cyanogen bromide. In the ord...
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ژورنال
عنوان ژورنال: Journal of the Japan Veterinary Medical Association
سال: 1966
ISSN: 0446-6454,2186-0211
DOI: 10.12935/jvma1951.19.72