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July 4, 2015

Homework Help: Chemistry

Posted by Chemgam on Friday, January 11, 2013 at 2:35am.

Arginine
O
2.01
H2N---CH--C----OH

9.02 CH2

CH2

CH2

NH

12.48 C==NH

NH2
________________________________________

9.78 O 2.35

H2N----CH---C----OH

CH3

Glycine

________________________________________


Shown above are images of two amino acids, along with the pKas of each of their titrateable groups.

(a) Calculate the isoelectric point (pI) of the dipeptide Glycine-Arginine.




(b) Calculate the isoelectric point (pI) of the dipeptide Arginine-Glycine.

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