https://www.youtube.com/watch?v=TmOINFfbl-Y /mnt/1T-5e7/mycodehtml/Biology/SangSooKim/Bioinformatics_basic/006/003_Amino_acid_structure_game/main.html ================================================================================ ================================================================================ Search following in image google: chemical properties of the amino acid ================================================================================ ================================================================================ Perpoerty of amino acid Center: C Left: amin group, $$$H_3N^+$$$ Right: carboxylic group, $$$COO^-$$$ Upper: hydrogen, H ================================================================================ ================================================================================ ================================================================================ Disulfide 1. H is removed 2. Covalent bond occurs between 2 Ss ================================================================================ Before After: Hs are out, Ss are coupled ================================================================================ ================================================================================ Following 2 parts are distant But due to couple of Ss, they become near in terms of chemical properties ================================================================================ ================================================================================