Two control elements in the hepatitis B virus S‐promoter are important for full promoter activity mediated by CCAAT‐binding factor
Claus‐Thomas Bock, Stefan Kubicka, Michael Peter Manns, Christian Trautwein – 30 December 2003 – Natural occurring mutations in the preS‐region are frequently found during chronic hepatitis B virus (HBV) infection. Here we used the mutated preS‐region from a patient to study the transcriptional regulation of the S‐promoter. The mutations were a CCAAT‐box (MUT1) point mutation, a 6‐base pair (bp) deletion (MUT2) 3′ of the CCAAT‐box, and a 153 bp deletion (MUT3) in the preS2 genome.