BIOL 1000 Lecture Notes - Lecture 4: Alpha Helix, Disulfide, Lipid Bilayer
23 Nov 2017
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Document Summary
Primary linear amino acid sequence joined by peptide bond g-a-s-d-f-v-y-c. Amino acid formation-bond formation between carboxyl group and amino group (amine)- condensation reaction to make peptide bond (water produced) Once protein is translated in the cell: bond between backbone of protein eg. rhodopsin protein component of the rhodopsin photoreceptor is alpha helix. Many proteins form a tertiary structure but not all form quaternary structure: the primary protein structure (the amino acid sequence) determines the overall 3d structure shape of a protein and structure determines function. In sickle cell anemia- changing even 1 amino acid affect the structure of hemoglobin. Can form bond between amino acid that are further away it gives rise to the 3d. More than one peptide chain joined together or multiple peptides of one type. Eg aquaporin-same 4 aquaporin come together (tetra peptide) Separation between two environments (inside and outside of the cell: use and need for energy (energy metabolism) carbon is obtained.
