Abstract:
:Recently we have described that the Herpes simplex virus (HSV)-induced thymidine kinase (TK) induces AMP- and ADP-dThd-5'-phosphotransferase activities. We now demonstrate the heterogeneity of the described activities in isoelectric focusing experiments and polyacrylamide gel electrophoresis. A TK--mutant of HSV type 1 fails to induce these activities. The activities of the type 1 enzyme complex was neutralized by an anti-HSV-serum. The TK-enzyme complex expressed in LTK--cells transformed to a TK+-phenotype by sheared HSV-1 DNA was compared with the wild type TK complex in isoelectric focusing experiments. Additionally we demonstrate that the HSV type 1 enzyme complex has thymidylate kinase activity, while the type 2 TK complex did not exhibit thymidylate kinase activity. Feedback regulation mechanisms by dTMP, dTDP and dTTP were investigated using partially purified enzyme preparations of HSV types 1 and 2 infected TK--cells.
journal_name
Arch Viroljournal_title
Archives of virologyauthors
Labenz J,Friedrich D,Falke Ddoi
10.1007/BF01314875subject
Has Abstractpub_date
1982-01-01 00:00:00pages
235-49issue
3eissn
0304-8608issn
1432-8798journal_volume
71pub_type
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