منابع مشابه
Deoxyribo ucleic acid-directed synthesis of ribonucleic acid by an enzyme from Escherichia coli.
l’rotein structure is under genetic control;’-3 yet the precise mechanism by which DNA$ influences the formation of specific amino acid sequences in proteins is unknown. Several years ago, it was discovered that infection of Escherichia coli with certain virulent bacteriophages induces the formation of an RNA fraction possessing both a high metabolic turnover rate and a base composition corresp...
متن کاملSeparation of deoxyribo-oligonucleotidases induced by infection with bacteriophage T2.
In 1962, Aposhian and Kornberg' described a procedure for partial purification of the DNA polymerase induced by infection of Escherichia coli with bacteriophage T2. They observed that their purest preparation of phage-induced DNA polymerase exhibited deoxyribonuclease activity when assayed with heat-denatured DNA as substrate. Recently, Lucas and Kornberg2,3 purified the DNA polymerase induced ...
متن کاملThe deoxyribo-nucleases of Escherichia coli. III. Studies on the nature of the inhibition of endonuclease by ribonucleic acid.
It was first observed by Kozloff (1) that the deoxyribonuclease activity of cell-free extracts of Escherichiu coli could be increased by treatment with pancreatic ribonuclease. This stimulation was found to result from the destruction by the ribonuclease of an inhibitory ribonucleic acid. The phenomenon of cellular deoxyribonuclease inhibition is a widespread one, having been observed in yeast ...
متن کاملData hiding based on contrast mapping using DNA medium
Recently, biological techniques become more and more popular, as they are applied to many kinds of applications, authentication protocols, biochemistry, and cryptography. One of the most interesting biology techniques is deoxyribo nucleic acid and using it in such domains. Hiding secret data in deoxyribo nucleic acid becomes an important and interesting research topic. Some researchers hide the...
متن کاملEnzymatic synthesis of deoxyribo-oligonucleotides of defined sequence. Properties of the enzyme.
A modified purification is described for an enzyme, from Escherichiacoli B, which polymerizes deoxyribonucleoside-5' diphosphates. Under appropriate conditions, the enzyme will add a single deoxyribonucleotide residue to a deoxyribo-oligonucleotide primer. At all stages, the enzyme activity copurified with the activity which will polymerize adenosine-5' diphosphate (polynucleotide phosphorylase...
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ژورنال
عنوان ژورنال: Chemistry & Biology
سال: 2004
ISSN: 1074-5521
DOI: 10.1016/j.chembiol.2004.08.002