Question

SHOW WORK 1. Why is an amino acid called an amino acid? Use the following structure for questions 3-6. The circle contains the side chain of the amino acid Lysine (Lys). I 2 Is the side chain polar or nonpolar? 3. Is the side chain hydrophilic or hydrophobic? 4. Is the side chain acidic; basic, or neutral? 5. What is the name of the functional group in the side chain? 6 What is the strongest attractive force for the side chain?

Answer 1

The given questions are solved in the pic attached
" Amino acids are called so as they are the organic compounds. containing at least one ameno (-NH2) group (on lineno =NH] and one carboxylic acid (-200H) group. So the two terme Gamino and baced combinely gines Camino aced For the ginen amino acid, Lysine (Lys), we have 2. In general for ameno acids, Polar side chains contain groups that exists as changed malities at physiological pror groups that can actively participare un Hydrogen Bonding In case of Lys, the side chain -NH2 group execute as positively charged - Nit group at physiological pe, that is sometimes inawed an H-bond formations with negatively charged non-protein atoms (ie anion mecilies) .. Thus the side chain of Lys is spolar? Lys at physiological Porn Hawe R=) negatively charged non-prolin atours @1., H- Nah TOP ... - H-bonds. -NH2 of Lys is positively charged, Polar clearly the side chain ameno aced

3. The sedechain of Lys is camphipathis & en nature as it has a non-polar "carbon chain part that is hydrophobes whereas the end of the side chain is polar that is hydrophilic in nalure. The Polar-NH₂ part can interact with 1420 via H-bonding on non Polar . J Chyduaphobic) Part of sede r ower ساحل | Polaru, . (منتهموه با Pallt of side chain 4. The side chain of Lys contains NHL that contains lone beur of electrons that can be donated for protonation Thers this Nk can act as the basic centere thens, resulting in the basic nature of the side chain 5. The side side chain contains NHL group ie the amino functional group. 6. Hyduagen-beending is the strongest attractive force side-chain for the of of Lys. The Hs attached to -Nie side chain can interact with electronegativce o atom of Ho we other electronegative element prose or negatively charged moeitices of the protein molecule resulting in strong H-bonds beaween them, Gostyng & Estreng attractive interactio bond HN, 1024 HAN, 1024 N- nd 97 سلبيا لما هو معلمملوك maeities of protein Interaction of Lys with H2o via H-bonding negative changed (R)