Transcription Flashcards
what is transcription
making an RNA copy of a gene on the DNA strand by complementary base pairing
what is central dogma
info flow in the cell. DNA->RNA->Protein
what do transcription levels do
vary
what certain sequences does DNA have
spacer sequences
what makes RNA copies
RNA Polymerase
what signals does each gene have
signal to start (promoter)
signal to stop (terminator)
what does mRNA do
carries protein-coding info
where is the minor groove
the top
where is the major groove
at the bottom
what are transcription factors
proteins that bind to regions of DNA which contain control sequences and regulate genes
what are the 2 types of transcription factors
activators-boost transcription
repressors-decrease transcription
what does transcription depend on
the signals in the DNA
Why are activator proteins useful
they attract RNA polymerase to the gene and stabilise its binding
what is the helix-loop-helix important for
the development or cell activity
what is the coiled-coil motif important for
bonds to the DNA helix in dimers making many contacts with the DNA
