CAS BI 203 Lecture Notes - Lecture 2: N-Terminus, Amide, Alpha And Beta Carbon
7 Feb 2014
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In this video, we will resume our survey of biopolymers. 676 and we"ll talk about proteins first, which are made up of amino acids. 677 structure of amino acid-- amino acid because it has an amino group on one end and a carboxylic. 679 [00:00:25. 20] in between those two groups, there"s an alpha carbon. 680 side chain often talked about just as an r group. Now, every amino acid is going to have this. And every amino acid is going to have a different side chain. 682 going to give them their different properties. 683 [00:00:48. 28] now, in aqueous solution, amino acids exist as zwitterions, meaning doubly684 charged molecules with a positively-charged amino group and a negatively-charged carboxylic. And in the next couple of videos, we"ll be talking about some of the consequences for its. This is, again, two other depictions of the same molecule, ball and chain and a.
