Abstract:
:The E5 open reading frame (ORF) from bovine papillomavirus type 1 (BPV 1) as well as the E5 ORFs from human papillomaviruses (HPV) type 6 and type 16 have been reported to transform immortalized rodent cells. In an analysis of murine and human tumors for the presence of putative papillomavirus-related sequences, we cloned amplified cellular sequences from the mouse cell line Eb that cross-hybridized with the E5 ORF of HPV 18. A 2.1-kb fragment termed HC1 was sequenced. In normal murine cells, it was present as a single-copy genomic sequence located on chromosome 8. A region of 213 nucleotides corresponded to the E5 gene (HC1 E5), based on the best alignments and on the presence of direct and inverted repeats bearing a central sequence motif. These structural elements are also present in the HPV 18 E5 ORF. HC1 E5 contained an ORF that was transcribed bidirectionally. The transcription in the E5 direction was enhanced in RNA obtained from organs and tumors from carcinogen-treated animals and C127 cells. The polypeptide deduced from the sequence was related to E5 proteins from genital papillomaviruses, to the putative product of the Q300 mouse gene, and to several viral and human growth factors. The data suggest that there may be several cellular counterparts to the viral E5 proteins.
journal_name
Mol Carcinogjournal_title
Molecular carcinogenesisauthors
Kahn T,Friesl H,Copeland NG,Gilbert DJ,Jenkins NA,Gissmann L,Kramer J,zur Hausen Hdoi
10.1002/mc.2940060204subject
Has Abstractpub_date
1992-01-01 00:00:00pages
88-99issue
2eissn
0899-1987issn
1098-2744journal_volume
6pub_type
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更新日期:2016-05-01 00:00:00
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更新日期:2006-02-01 00:00:00
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