Question

For each blank below, add in the single letter abbreviation for the appropriate amino acid:

• Able to form disulfide bonds:
• Neutrally charged at pH 7, but positively charged at pH 5:
• Made by transaminating oxaloacetate:
• Encoded by the start codon:
• Has a sec-butyl side chain:
• The nucleophile in chymotrypsin:
• Similar to serine, but with an extra methyl group:
• Precursor to Urea in the Urea Cycle:
• Aromatic and can be phosphorylated

Answer 1

(i) Able to fo Amino Acids Able to form disulfide bond: -y Cystein. • Cystein Single letter Abbre Wation Tc (ii) Neutrally charged at pH 7 ó but positively charged at pH 5 's Histidine u 600 Late (iii) Made by transaminating · TDI Oxaloacetate 4 Aspartate • Glutamate + Oxaloacetate e x-ketoglut arate + Aspart civ Encoded by the start Condon ; Ml w Methionine CV Has a see-butyl Side chain I • Isoleucine (vi) The Neudeophile in chymotrypsin is! y Serine ("Vinh Sinclar to seuine', but with JT an extra methyl group is Thereonine (vii) precursor to Urea in Urea Cycle [R] la Arginine (ix) Aromatic and can be phosphorylated ly |