MBG 2040 Final: Translation and the genetic code notes
4 Dec 2016
School
Department
Course
Professor
Document Summary
A polypeptide is a long chain of 20 aas. Aa(cid:495)s have (cid:885) parts free amino group free carboxyl group: side group (r) Note methionine should be in the group 2 box but the prof couldn"t fit it in there. Aa residues are joined by peptide bonds the carboxyl group of one aa is covalently linked to the amino group of the next aa. By convention, a polypeptide goes from the n to the c terminus. Note hemoglobin has 2 beta globin units, 2 alpha globin units and an additional considered to have 4 subunits tho, heme is just a helper molecule heme group. Most genes exert their effect(s) on the phenotype of an organism through proteins, which are large macromolecules composed of polypeptides. Each polypeptide is a chain-like polymer assembled from different amino acids. The amino acid sequence of a polypeptide is specified by the nucleotide sequence of a gene.
