doi: 10.1093/nar/3.1.219.
Thermostable polynucleotide phosphorylases from Bacillus stearothermophilus and Thermus aquaticus
- PMID: 1250699
- PMCID: PMC342889
- DOI: 10.1093/nar/3.1.219
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Thermostable polynucleotide phosphorylases from Bacillus stearothermophilus and Thermus aquaticus
Nucleic Acids Res.
1976 Jan.
Free PMC article
Abstract
Polynucleotide phosphorylase from Bacillus stearothermophilus has been purified to homogeneity. Polyacrylamide gel electrophoresis run under denaturing conditions indicates that the enzyme is a tetramer with subunits of apparent molecular weight 51,000 daltons. A partial purification of polynucleotide phosphorylase from Thermus aquaticus has also been effected. The two enzymes show similar catalytic properties, which differ little from those of mesophilic polynucleotide phosphorylases. The use of thermostable polynucleotide phosphorylases for in vitro nucleic acid synthesis is discussed.
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