Nudeotide sequence of the transforming early region Elb of adenovirus type 12 DNA: structure and gene organization, and comparison with those of adenovirus type 5 DNA

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Abstract
The nucleotide sequence of the entire transforming early region of E1b of the highly oncogenic adenovirus type 12 (Ad12) DNA has been determined. The total sequence (3860 base pairs) encompasses the entire transforming early region E1 of Ad12 DNA. From the sequence for the E1b region of Ad12, and the transcription map of the E1b region (1, 2, 3, and this paper) the structure and gene organization of the early region E1b of Ad12 DNA were analyzed and compared with those of the E1b region in the non-oncogenic Ad5 DNA (4, 5). Most of the sequences in the E1b region of Ad12 was highly homologous to that of Ad5. It is predicted that the Ad12 region E1b codes for polypeptides of 53.9, 19.1, and 8.9 kd. This situation is identical with that of the Ad5 region E1b which codes for polypeptides of 54.9, 20.6, and 8.3 kd. The function of these predicted polypeptides encoded by the E1b regions in cell transformation is discussed.