CHEM 102 Lecture Notes - Lecture 30: Uracil, Adenine, Cytosine
12 Apr 2017
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Major protein constituent of hair, feathers, nails, horns, and turtle shells. Most abundant protein in humans (30% of total body proteins) Major structural material in tendons, ligaments, blood vessels, and skin. Rich in proline (up to 20%) -- important to maintain structure: globular proteins: myoglobin. Monomer -- single peptide chain with one heme unit. Has a higher affinity for oxygen than hemoglobin. Oxygen stored in myoglobin molecules serve as a reserve oxygen source for working muscles: globular proteins: hemoglobin. Tetramer -- each subunit has a heme group. Can transport up to 4 oxygen molecules at a time. Proteins play crucial roles in most biochemical processes. The diversity of functions exhibited by proteins far exceeds the role of other biochemical molecules o. Ability to bind to small molecules specifically and strongly. Ability to bind to other proteins and form fiber like structures.
