Homework Answers
Since Valine is a non polar amino acid, pKa with respect to "R" group will be there around 7
Aspatric acid is an acidic amino acid and hence the pKa with respect to "R" group ls approximately equals to 5 (exact value= 3.65)
Cysteine and Threonine being polar amino acids, pKa value with respect to "R" group lies in the range 0f 7-10 ( exact value for cysteine= 8.18)
Since there is no basic aminoacid present in the list, we cant classify any of them in the range of pKa 15.
IF we talk interms of overall pI values of an amino acid (isoelectric point),
Aspartic acid- 10.
Cysteine- 5.02
Valine - 6.02
Threonine- 5.60
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