NATS 1660 Lecture Notes - Lecture 3: Carboxylic Acid, Isoleucine, Valine
26 Sep 2017
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Nats 1660 lecture september 26th, 2016. Proteins = polymers (chains) of amino acids folded into a specific shape: there are 20 different types of amino acids, glycine (gly, alanine (ala, valine (val, leucine (leu) Isoleucine (ile: methionine (met, phenylalanine (phe, tryptophan (trp, proline (pro) Carboxyl group present in all (carbon with 2 oxygen attached) Nitrogen with 3 hydrogens attached (positive charge) with all amino group. No matter what group they belong to, all of them have their carboxyl and amino groups. The 8 essential amino acids for human adults: tryptophan, methionine, valine, threonine, phenylalanine, leucine, isoleucine, lysine, all animals including insects must obtain these in their diet, body can synthesize the other 12 amino acids from other molecules. Polypeptide = a chain of amino acids that make up a protein: chain must be folded into the correct shape to make a functioning protein. Ribbon model shows the polypeptide backboned of the molecule, without the r groups.
