Nucleotide sequence studies of polyoma DNA. The Hpa II 3/5 junction to the Hpa II 4/Hae III 18 junction, encoding the origin of DNA replication and the 5' end of the early region.
Open Access
- 1 September 1978
- journal article
- abstracts
- Published by Elsevier BV
- Vol. 253 (18), 6561-6567
- https://doi.org/10.1016/s0021-9258(19)46968-8
Abstract
The nucleotide sequence of polyoma DNA, from near the Hpa II 3/5 unction to the Hpa II 4/ae III 18 junction has been determined by the chemical method of Maxam and Gilbert (Maxam, A., and Gilbert, W. (1977) Proc. Natl. Acad. Sci. U. S. A. 74, 560–564). The sequence contains 878 base paris, including the origin of DNA replication and the region known to encode the hr-t function. The region corresponding to the origin of DNA replication contains several short-repeated sequences and palindromes. There is a 30-base-pair region with striking similarity to the corresponding region of SV40, and, as in SV40, a portion of that sequence is capable of forming a stable hairpin loop. In the region encoding the hr-t function, there is apparently a single open reading frame extending from position 188 to theHpa III 4/Hae III 18 junction. The potential translation product of this open frame begins with an initiation codon starting at position 188, and the first five amino acids of this product are Met-Asp-Arg-Val-Leu. This sequence is similar to the NH2-terminal five amino acids of SV40 small t-antigen known from nucleotide and amino acid sequencing to be Met-Asp-Lys-Val-Leu.Keywords
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