Chemistry 3393A/B Lecture Notes - Lecture 2: Collagen, Ultimate Tensile Strength, Myoglobin

• School: Western University
• Department: Chemistry
• Course: Chemistry 3393A/B
• Professor: Felix Lee

Document Summary

This topic is a crash course in basic protein biochemistry and focusses on some of the chemical aspects of proteins. The following sections of the textbook are covered: After studying this chapter, you should be able to do the following textbook questions: chapter 2: all. And these multiple-choice questio(cid:374)s o(cid:374) the text(cid:271)ook"s we(cid:271)site (http://global. oup. com/uk/orc/chemistry/patrick5e/): chapter 2: all. Note: you will need to refer to table 2. 1 and the structures of the amino acids (appendix 1). These will be provided on tests and exams if they are necessary. The carbonyls alternate which is a structural feature of peptides. This must happen when the r-groups of amino acids are very large. To prevent steric hindrance, the r-groups must be in trans, thereby having the carbonyl groups in trans. This minimizes any type of repulsion that could occur between the groups. The other property of peptide bonds explains why we use cis/trans.