BCH 3025 Lecture Notes - Lecture 5: Lactose Permease, Alpha And Beta Carbon, Amine
20 Jan 2017
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Document Summary
Proteins: main agents of biological function: catalysis. Transports lactose across cell membrane: structure. Amino acids: building blocks of protein: proteins are linear heteropolymers of alpha-amino acids, amino acids have properties that are well-suited to carry out a variety of biological functions. Varied chemical properties: common amino acids have 3 letter abbreviations and 1 letter symbols. 1 letter code reflects attempt to reduce the size of date files. Amino acids share many features, differing only that the r substituent: all 20 common amino acids are alpha-amino acids. They have a carboxyl group and an amino group bonded to the same carbon atom (alpha carbon) They differ from each other in their side chains (r groups) vary in structure, size, change. Influences the solubility of the amino acids in water. Always has 4 substituents and is tetrahedral. Amino acids: atom naming: carbons have greek letters (alpha beta chi delta . )
