Control of complex formation of DNA polymerase α–primase and cell‐free DNA replication by the C‐terminal amino acids of the largest subunit p180

DNA polymerase α–primase is a heterotetrameric complex essential for simian vacuolating virus 40 (SV40) DNA replication. We show that the C‐terminal 67 amino acid residues of the human p180 subunit are essential for SV40 DNA replication as they are required for binding of the p68 subunit and play a...

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Bibliographic Details
Published in:FEBS letters 2002-09, Vol.527 (1-3), p.143-146
Main Authors: Smith, R.W.P, Nasheuer, H.-P
Format: Article
Language:English
Subjects:
Animals
Cell-Free System
DNA Polymerase I - genetics
DNA Polymerase I - metabolism
DNA polymerase α
DNA Primase - genetics
DNA Primase - metabolism
DNA Replication
Enzyme activity
Humans
Mice
Protein Subunits
Protein–protein interaction
Sequence Deletion
Simian vacuolating virus 40 DNA replication
Simian virus 40 - genetics
SV40, simian vacuolating virus 40
TAg, large T antigen
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Summary:DNA polymerase α–primase is a heterotetrameric complex essential for simian vacuolating virus 40 (SV40) DNA replication. We show that the C‐terminal 67 amino acid residues of the human p180 subunit are essential for SV40 DNA replication as they are required for binding of the p68 subunit and play a role in the interaction with the primase subunits, p48 and p58. Furthermore, we demonstrate that exchanging these residues to those of mouse origin can only partially rescue the SV40 DNA replication activity of DNA polymerase α–primase.
ISSN:0014-5793
1873-3468
DOI:10.1016/S0014-5793(02)03197-6