Abstract
From lots of 20 to 30 g of avian myeloblastosis virus RNA-dependent DNA polymerase was obtained in preparations of purity greater than 95% by using a two-step column chromatographic procedure employing DEAE (DE 52) and carboxymethylcellulose (CM 52.). Yields of RNA-dependent DNA polymerase varied from approximately 20,000 to 35,000 U/g of virus. Specific activity of the enzyme was about 35,000 to 60,000 U/mg of protein. Free of detectable RNase activity, the product exhibited a molecular weight of about 160,000, an isoelectric point of 6.5, and approximately 2 mol of fatty acid per mol of enzyme.
MeSH Terms
Animals
Avian Leukosis/microbiology
Avian Leukosis Virus/enzymology
Avian Myeloblastosis Virus/enzymology
Blood/microbiology
Chickens
Fatty Acids/analysis
Glycoproteins/analysis
Isoelectric Point
Molecular Weight
RNA-Directed DNA Polymerase/analysis,isolation & purification,metabolism
Viral Proteins/analysis
Chemicals
Fatty Acids
Glycoproteins
Viral Proteins
RNA-Directed DNA Polymerase
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Houts G E
Miyagi M
Ellis C
Beard D
Beard J W
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