CH 106 Lecture Notes - Lecture 18: Protein Structure, Alanine, Vitamin A
1 Dec 2016
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Document Summary
Amino acid contains both an amine and carboxylate group attached to the same carbon called the alpha carbon, carbon is central. Plants can synthesize proteins from carbon dioxide, water, and minerals like nitrates or sulfates. Humans can synthesize some amino acids but must obtain 9 essential amino acids in order to survive. Babies require one more amino acid than adults. Nonpolar amino acids: alanine, valine, penylanine proline, leucine. Amino acids are linked by peptide bonds. There is a base group and acid group (all protein have oh and h+) Proteins must fold, it is a long chain and cannot remain in a straight line. Primary structure-the sequence of amino acids from n-terminal to c-terminal. Alpha helix-middle axis and curls around it. Beta pleated sheet-looks like paper fan, in straight line. Tertiary structure: three-dimensional shape of a protein due to the spatial relationship of groups that are far apart on the protein chain.
