Kaposi's sarcoma-associated herpesvirus open reading frame 50 represses p53-induced transcriptional activity and apoptosis

Y. Gwack, S. Hwang, H. Byun, C. Lim, Woo Kim Jin Woo Kim, E. J. Choi, J. Choe

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40 Citations (Scopus)


Kaposi's sarcoma-associated herpesvirus (KSHV) open reading frame 50 (ORF50) encodes a viral transcriptional activator which stimulates the transcription of viral early and late genes of KSHV. Here we show that ORF50 represses transcriptional activity of p53 and p53-induced apoptosis through interaction with CREB binding protein (CBP). This inhibitory effect of ORF50 on the transcriptional activity of p53 was relieved by the addition of CBP. ORFS0 mutants, which are defective in interaction with CBP, lost the inhibitory effects on p53. Our data provide a framework for delineating the regulatory mechanisms used by KSHV to modulate cellular transcription and the cell cycle.

Original languageEnglish
Pages (from-to)6245-6248
Number of pages4
JournalJournal of virology
Issue number13
Publication statusPublished - 2001 Jul 3
Externally publishedYes


ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Insect Science
  • Virology

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