Nucleic Acids Research, 1980, Vol. 8, No. 12 2771-2782
© 1980
Articles |
Distinction between mouse DNA polymerases
and ß by tryptic peptide mapping
Laboratory of Biochemistry, National Cancer Institute, National Institutes of Health Bethesda, MD 20205, USA
Received March 18, 1980.
Results presented here and in a previous paper (Tanabe et al. (1979) Biochemistry 18, 34013406) indicate that mouse ß-polymerase is a single polypeptide with an apparent molecular weight of 40,000. This polypeptide has now been analyzed by tryptic peptide mapping. comparison of the results with identical analysis of mouse
-polymerase reveals that the tryptic peptides derived from the two enzymes are different. These results indicate that ß-polymerase is neither a subunit of
-polymerase nor a proteolytic degradation product of
-polymerase.