RNA Synthesis and Processing
Be able to give short definitions
for the following terms:
Transcription:
The
process of synthesizing RNA from DNA.
Initiation:
The
initiation of transcription is directed by DNA sequences called promoters which
tell RNA polymerase where to begin.
Promoters:
The
short stretch of DNA that tells the RNA polymerase where to begin transcription.
Elongation:
The
template (non-coding) strand of DNA is used as a template by RNA polymerase to
add nucleotides in a 5’ to 3’ direction.
Termination:
Certain
DNA sequences function as signals to tell the RNA polymerase to terminate
transcription.
Three steps in the processing of hnRNA to mRNA:
Capping
Polyadenylation
Splicing