Question: Using the data in Table 5.1, calculate the average amino acid residue weight in a protein of typical composition. This is a useful number to

Using the data in Table 5.1, calculate the average amino acid residue weight in a protein of typical composition. This is a useful number to know for ap-proximate calculations.
In Table 5.1

TABLE 5.1 Name Properties of the common amino acids found in proteins pKa of lonizing Residue Mass Occurrence Side Chain Abbreviations 1- and 3-letter codes aCOOH Group A, Ala R, Arg N, Asn pKa of pKa of -NH3 Group (daltons) in Proteins (mol %) 9.7 Alanine Arginine Asparagine Aspartic acid D, Asp Cysteine Glutamine Glutamic acid E, Glu Glycine Histidine Isoleucine Leucine Lysine Methionine Phenylalanine F, Phe Proline Serine Threonine Tryptophan yrosine Valine 71.08 156.20 114.11 115.09 103.14 128.14 129.12 57.06 137.15 113.17 113.17 128.18 131.21 147.18 97.12 87.08 101.11 186.21 163.18 99.14 2.3 2.2 12.5 8.8 9.8 10.8 5.0 4.2 5.9 1.3 3.7 3.9 8.3 C, Cys O, Gln 2.2 2.2 2.3 9.7 9.6 9.2 9.7 9.6 9.0 9.2 4.2 G, Gly 7.9 2.4 5.5 IS 2.4 L, Leu K, Lys M, Met 2.2 10.0 2.0 4.0 P Pro S, Ser T, Thr W, Trp Y, Tyr V Val 10.6 9.2 10.4 9.4 5.6 2.4 1.5 10.1

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