BIL 150 Lecture Notes - Lecture 23: Methionine, Action Potential, Base Pair
Document Summary
3 nucleotides=1 codon=1 amino acid in polypeptide. Give you dna sequence, what protein coded for fifth codon. Exhibits wobble: third base pair is looser. Allows for multiple codons to make one amino acid. Types of muscle proteins and their functions. 50 multiple choice on content after test 2. Number of action potentials is more important than strength, consider frequencies. Muscle physiology: muscles can only contract (called a twitch) Time between applied action potential and contraction start. Muscle proteins-- ability to contract is based on muscle proteins (4 protein types) Myosin: a motor protein; involved in muscle contraction and motility. Bind actin, hydrolyze atp, for transduction/conformational change. Dimer (2 protein chains) and 3 domains. 40 different myosin genes exist- type 2 most common. Can also classify muscles basec on contraction time. Structural model and molecular basis for muscle contraction. Sarcomere: basic repeating unit of muscle cell. I a m h know these on diagram!
