NDLI: Structure of African Swine Fever Virus Late Promoters: Requirement of a TATA Sequence at the Initiation Region

Content Provider	PubMed Central
Author	Ramón, García-escudero Viñuela, Eladio
Copyright Year	2000
Abstract	A number of mutations, including deletions, linker scan substitutions, and point mutations, were performed in the promoter of the late African swine fever virus (ASFV) gene coding for the capsid protein p72. The consequences of the mutations in terms of promoter activity were analyzed by luciferase assays using plasmids transfected into infected cells. The results showed that the promoter function is contained between nucleotides −36 and +5 relative to the transcription initiation site. Moreover, two major essential regions for promoter activity, centered at positions −13 and +3, were located along the 41-bp sequence, the latter mapping in the transcription start site. Sequence alignment with other ASFV late promoters showed homology in the region of transcriptional initiation, where the presence of the sequence TATA was observed in most of the promoters. Substitution of these four residues in three other late viral promoters strongly reduced their respective activities. These results show that cis-acting control elements of ASFV p72 gene transcription are restricted to a short sequence of about 40 bp and suggest that transcription of late genes is initiated around a TATA sequence that would function as an initiator element.
Starting Page	8176
File Format	PDF
ISSN	10985514
e-ISSN	10985514
Journal	Journal of Virology
Issue Number	17
Volume Number	74
Language	English
Publisher	American Society for Microbiology
Publisher Date	2000-09-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Virology Immunology Microbiology Insect Science

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