Oct 16, 1989

Function of the hexameric sequence in the cauliflower mosaic virus 35S RNA promoter region

Biochemical and Biophysical Research Communications
T KawataM Iwabuchi


The hexameric sequence ACGTCA functions in transcriptional regulation of wheat histone genes. The cauliflower mosaic virus (CaMV) 35S RNA promoter has the same hexameric sequence, and mutation analyses confirmed that the hexamer contributed greatly to transcription from the 35S promoter when a test gene with this promoter was introduced into sunflower cells. Electrophoretic mobility shift assays revealed the existence of a nuclear protein(s) in sunflower cells which is homologous to the HBP-1b that has been identified as binding to the 35S promoter in wheat. These results provide evidence of the involvement of the hexameric sequence and the HBP-1b-like DNA binding protein(s) in transcription from the 35S promoter.

Mentioned in this Paper

Transcriptional Regulation
Histone antigen
Nuclear Proteins
Helianthus species
Transcription, Genetic
Cauliflower (Dietary)
Cauliflower Mosaic Virus
Nuclear Protein
Mosaic Viruses

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