Amino acid Isoelectric point Net charge at pH 7.30 A 8.85 O+1 00 O-1 5.23 O+1 00 O-1 6.85 O+1 00 O-1 8.65 O+1 00 0-1

4: Draw structures from notations or notations from structures, for the following dipeptides. Look up in book for the structures of various amino acids and their names (and notations). (EOCQ 60) Hints for drawing a dipeptide from the specified amino acids. From the given symbols (Ser, Thr, etc), draw the structures for the amino acids in the specified order example, for Ser-Thr, draw Serine first and then Threonine). Then remove the OH from the first amin and one H (from the N atom) on the second amino acid. Then join the remaining fragments; that give the dipeptide formed. In these reactions, H2O is formed as a side product; but it is implied, and you have to show it in your answers. The following equation illustrates that. Here, R and R' are symbolic. In an actual question, you must the actual structures for the amino acids (Table 16.3 in the book). O H || | Н.N— CH— С-N-CH—С-ОН H,N-CH-C–OH + H,N-CH-Ċ–OH R' R. R' (H2O is a sid no need t Amino acid 2 dipeptide Amino acid 1 а. Cys-Ser…

Classify the following amino acids as highlight whichever is correct                                                                              Neutral/ non-polar/ acidic/ basic

The use of salt bridges or hydrophobic interactions (or pockets) to stabilize interactions between more distant amino acids within a single polypeptide, is a demonstration of protein TERTIARY structure. True False