Chapter 10 Amino acid Protein Analysis Qijun Wang 2005-4-12
Chapter 10 Amino acid & Protein Analysis Qijun Wang 2005-4-12
Chapter 10-1 Amino Acids Analysis
Chapter 10-1 Amino Acids Analysis
What is amino acid? What is amino acid? Amino Acid:aminated carboxylic acid (R-COOH) R group Carboxyl end Amino end
What is amino acid? What is amino acid? ◼ Amino Acid: aminated carboxylic acid (R-COOH) R group
Examples NH2CH2COOH NH2CH2CH2COOH a-amino B-amino acetic acid propanoic acid NH2CH2CH2CH2CH2CHCOOH NH2 a,8-2 amino caproic acid
NH2 CH2 COOH -amino acetic acid NH2 CH2 CH2 COOH -amino propanoic acid NH2 CH2 CH2 CH2 CH2 CHCOOH NH2 ，-2 amino caproic acid Examples
Classification of Amino Acid 1.By the location of Amino-group a/B/y-AA 2.By its acidity:neutral/acidic/basic AA ratio of Amino-group to carboxylic group 3.By whether containing phenyl group aromatic non aromatic AA 4.By its occurrence in protein Protein /non protein AA 5.By polarity of R group polar /apolar side chain AA 6.By its nutrient value to human: Essential AA and non-essential AA
Classification of Amino Acid 1. By the location of Amino-group ： / / -AA 2. By its acidity： neutral/ acidic/ basic AA ratio of Amino-group to carboxylic group 3. By whether containing phenyl group aromatic / non aromatic AA 4. By its occurrence in protein Protein / non protein AA 5. By polarity of R group : polar / apolar side chain AA 6. By its nutrient value to human: Essential AA and non-essential AA