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| Question | Answer |
| Amino Acid Basic Structure | |
| Structures & Classification | |
| General Properties : Amino Acid with non-polar R | 1. R does not bind or give protons 2. Oily 3. Hydrophobic |
| General Properties : Polar, uncharged R | 1. Zero charge at neutral pH 2. Can form hydrogen bond 3. Cysteine forms disulfide bond |
| General Properties : Polar, acidic R | 1. Donate protons 2. At neutral pH, R is fully ionized. 3. Contain -ve charge carboxylate group (-COO-) |
| General Properties : Polar, Basic R | 1. Accept protons 2. At neutral pH, it fully ionized. 3. Positive charged |
| Primary Structure (forms peptide bond) | |
| Secondary Structure Alpha Helix & Beta Sheet (forms Hydrogen bond) | |
| Tertiary Structure - Hydrophobic inside - Hydrophilic outside | |
| Quaternary Structure Arrangement of two or more polypeptide chain |
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