BIOL 1412 Lecture Notes - Acetyl Group, Ribose, Adenine

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1412
• Professor: Paul Messing

Document Summary

Chem. processes in body (performed by cells) = metabolism anabolism - building mol. s catabolism - breakdown of mol. s. Steps: dna uncoils at site of gene to expose gene base sequence, rna strand is formed using code on dna template to add complimentary rna mol. s eg. dna template a-t-c-g-c-a mrna u-a-g-c-g-u, dna translation. 3 bases on mrna = base triplet = a codon eg. cuu,acg, etc. Each codon codes for 1 amino acid (aa"s can have more than one codon) (fig. 3. 39: transfer rna (trna) w/ specific aa and anticodon (comp. bases to codon) binds to matching rna, peptide bind is formed to attach aa to growing peptide chain (fig. So overall: sequence of dna bases determine mrna sequences determines aa sequence for protein: after translation. Proteins produced on free ribosomes - released into cytosol or go to nucleus + mito. Proteins produced by ribosomes on er (rer) - released into er lumen. Modified by addition of sugars (glycoprotein) (fig.