BIOL 1107 1nd Edition Lecture 5 Outline of Last Lecture I. Nucleic Acid StructureII. LipidsIII. TriglyceridesIV. PhospholipidsV. SterolsVI. ProteinsOutline of Current LectureI. Amino AcidsII. Protein AssemblyIII. Different Structures of ProteinCurrent LectureI. Amino AcidsHow to determine what category (polar, nonpolar, etc.) amino acids belong to?You look at the R group (side chain and categorize accordinglyIonization status of amino and carboxyl groups are dependent on pHAmino acids are classified according to their R group (as mentioned above)20 amino acids used in body (don’t need to know all of them)Here are a few:- Arginine- charged (basic)- Alanine- nonpolar (methyl)- Cysteine- nonpolar (thiol)- Glycine- nonpolar (two hydrogen atoms)- Phenylalanine- nonpolar II. Protein AssemblyDehydration/condensation These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Two groups used in protein assembly: carboxyl + amine (join them two and take out the water)Two ends of proteins: N-termins (amino), C-termins (carboxy)20 amino acids (don’t need to know all)III. Different Structures of ProteinPrimary, secondary, tertiary, quaternaryPrimary- amino acid structureSecondary- alpha and beta sheetsTertiary- interactions of the side chainsQuaternary- more than one amino acid chain Tetranary- does not
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