BIOL107 Lecture 4: Macromolecules Part 3

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL107
• Professor: Torah Kachur

Document Summary

Biol 107 - lecture 4 - macromolecules part 3. Proteins function in 3d but are synthesized as linear polypeptides. The peptides themselves are formed during translation. The separate amino acids are covalently linked by peptide bonds. Proteins are not functional until they are fully folded. Amino acids start with an amino end (nh3. Amino acids end with a carboxyl end (coo-) The ends are abbreviated to n and c. That directionality is maintained in the polymer. As more peptides are added, the ends are still the same. Primary structure is a segment of amino acids arranged in a chain. Determined by the sequence of dna in genes. Is added in order from n to c. The amino acids fold into one of two shapes. The placement of r groups determines how the amino acid will fold. The shape of the amino acid determines what its function is. Ff it is shaped like a rope, it acts like a rope.