gene - Process of gene expression 1) Use DNA sequence to...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Process of gene expression 1) Use DNA sequence to encode RNA 2) RNA modifications after transcription: add 5’G Cap, add 3’ poly A tail, splice to remove introns, link together exons. mRNA is then exported from nucleus to cytoplasm 3) mRNA becomes sandwiched between ribosome, tRNA comes in, protein is made of amino acids 4) More modifications to protein, glysoglation-sugar coating of protein, phosphorilation- adding phosphate groups, proteolysis- removing specific amino acids Gene Structure Exon - regions of the DNA that code for a protein, contains genetic sequence and codons that is transcribed and is translated. Intron -removed during splicing Transcription initiation site - ACATTTG represents the 5’ end of the RNA Translation initiation site - ATG Translation termination codon - TAA, ribosomes dissociates and protein is released Transcription termination sequence - AATAAA Start codon - AUG signals start to translation Stop codon - signals translation to stop Promoter - site were RNA polymerase binds to the DNA to initiate transcription
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/17/2008 for the course BIO 318 taught by Professor Guss during the Fall '07 term at Dickinson.

Page1 / 2

gene - Process of gene expression 1) Use DNA sequence to...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online