BIOLOGY 1A03 Lecture Notes - Lecture 3: Beta Sheet, Phosphodiester Bond, Carboxylic Acid

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Lovaye Kajiura

Document Summary

The code for a protein sequence is in the nucleus. Should know significance of experiments, methodology, and researchers responsible for it. Dna has to stay in nucleus and send messages to ribosomes. Immune system in antibodies, structures in proteins (like hair), or motor proteins. Amino groups start a chain and a carboxyl group ends the chain. 3 classes for aa (should be able to recognize: polar, non-polar, electrically charged. You do not have to memorize all those structural formulas for aa. Side chains differ in: size, shape, charge, hydrophobicity (ability to react in water, reactivity. Amino acids are classified into groups based upon solubility in water or polarity of the side chain. Ribosomes can be found in the cytosol (free) and the rough endoplasmic reticulum (bound) Large subunit and small subunit must be attached in order for translation to take place. Linear polymer is folded into a 3-d protein. Secondary structure: alpha helix, beta pleated sheets.