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Mol Cell Biol. 1981 December; 1(12): 1061-1068

Three segments from the monkey genome that hybridize to simian virus 40 have common structural elements.

ABSTRACT

Three cloned segments that hybridize to a region of simian virus 40 (SV40) deoxyribonucleic acid including the origin of replication have been isolated from a monkey genomic library. The primary structure of one segment was previously reported (T. McCutchan and M. Singer, Proc. Natl. Acad. Sci. U.S.A. 78:95-99, 1981). We report here the sequences of the other two segments and a comparison of all three. The SV 40-hybridizing region in each segment is limited to several hundred base pairs. All of the segments contain multiple and disconnected sequences homologous to the region of SV40 directly surrounding the viral replication origin. The number and arrangement of the homologous sequences is different in the three segments. However, the segments have the following features in common: (i) each contains multiple copies of the sequence GGGCGGPuPu, which also appears six times near the origin of SV40; (ii) each contains several strong homologies to the central dyad symmetry of SV40; (iii) each contains a long internal repeat, as does the origin region of SV40. The three SV40-hybridizing segments are members of a larger family of genomic sequences that hybridize well to each other, but not necessarily to SV40.

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