Transcript Gene Polypeptide - Grayslake Central High School

Gene
Polypeptide
Gene  Polypeptide
Transcription
1. RNAP binds to
promoter
2. Separates DNA
strands
3. Transcribes the
DNA (adds RNA
nucleotides in a
5'-3' direction)
Transcription
RNA Processing
5' Cap and Poly-A tail



Prevent breakdown of RNA
Facilitate passage through nuclear pores
Cap provides ribosomal point of attachment
Introns


RNA Splicing
Non-coding segments within genes
Removed in RNA splicing
RNA Splicing
Spliceosomes
bind to ends
of introns
Resulting
mRNA is only
exons