Eukaryotic Transcription Flashcards
All protein-coding genes, plus snoRNA genes, miRNA genes, siRNA genes and most snRNA genes are transcribed by what enzyme
RNA polymerase II
tRNA genes, 5S rRNA genes, some snRNA genes and genes for other small RNAs are transcribed by
RNA polymerase III
5.8S, 18S, and 28S rRNA genes transcribed by
RNA polymerase I
Three conserved sequences of promoters in eukaryotic cells
1) a TATA (hogness) 25 (upstream)
2) a CAAT 70 (upstream)
3) GC-boxes -40 and -110
Basal transcription complex (made of) which binds to Inr (promoter region)
RNA polymerase and transcription factors
Basal transcription complex binds to (to begin transcription)
Promoter (Inr) that containing conserved sequences
Basal transcription complex involves both
BTE (elements)
BTF (factors)
BTEs include
TATA-box (25)
CAAT-boxes (70)
GC-rich (-40 to -110)
BTFs are considered
Minimal proteins complement (needed for accurate transcription)
Transcription regulatory elements
Upstream Downstream Within genes Enhance (polymerase activity) Silence (polymerase activity)