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ISOLATION AND CHARACTERIZATION OF DEOXYRIBONUCLEIC ACID FROM A STRAIN OF STAPHYLOCOCCUS AUREUS.

作者信息

Blobel H

机构信息

Department of Veterinary Science, University of Wisconsin, Madison, Wisconsin.

出版信息

J Bacteriol. 1961 Sep;82(3):425-9. doi: 10.1128/jb.82.3.425-429.1961.

Abstract

Blobel, Hans (University of Wisconsin, Madison). Isolation and characterization of deoxyribonucleic acid from a strain of Staphylococcus aureus. J. Bacteriol. 82:425-429. 1961.-Highly polymerized deoxyribonucleic acid was extracted from washed cells of Staphylococcus aureus with a mixture of equal parts of phenol and 2 m NaCl at pH 7.4. The aqueous phase was treated twice with phenol and the deoxyribonucleic acid precipitated with an equal volume of 2-ethoxyethanol. Residual ribonucleic acid was removed by treatment with ribonuclease and subsequent dialysis. Deoxyribonucleic acid was reprecipitated with 2-ethoxyethanol. The final product contained less than 1% protein. The deoxyribonucleic acid obtained from S. aureus strain S(44) had a (adenosine + thymine)/(guanine + cytosine) base ratio of 1.98. Intrinsic viscosity in 0.15 m NaCl + 0.015 m sodium citrate was approximately 76 dl/g. The sedimentation coefficient, S(20)w, was close to 25 S.

摘要

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本文引用的文献

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A non-vacuum freezing-dehydrating technic for histology, autoradiography and microbial cytology.
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