AMY-2A Lecture Notes - Lecture 22: Scleroprotein, Starch, Peptide
Document Summary
Proteins- are important bc we find them in our dna, 20,000 genes, 100,00 proteins, trillion cells: 20 different amino acids (small in all life) R-group unique for each amino acid; r position is different for each amino acid: dehydration synthesis joins amino acids. **protein= one or more peptide chains of amino acids joined together. Levels of protein structure: primary structure- chain of amino acids. Actual linear combination of amino acids: secondary structure- peptide bonds bonding with hydrogen bonding is responsible for the secondary structure, tertiary structure- overall 3 dimensional shape of our groups interacting. Secondary structures from 3-d shape important for correct function: quaternary structure- interaction of our groups combined between changes, only can happen if it is made up of multiple polypeptides. Quaternary structures are not always present in their protein. Microtubules- cilia and flagella fibrous protein is made up of this. Globular proteins: enzymes- catalysis of chemical reactions, transport, ph buffer (protein buffer, hormonal function.
