Question

In: Chemistry

Spell your name using capital letters. If there are letters in your name that do not...

Spell your name using capital letters. If there are letters in your name that do not code for an AAs, replace them by P, H, and W. Shorten or lengthen the name to make it a heptapeptide. What is its charge at pH 1, 7, and 13? What is its pI?

name: Travana so, Thr-Arg-Ala-Val-Ala-Asn-Ala

Solutions

Expert Solution

This is a neutral Amini acid as it contain one free -NH2 and one free - COOH group, to calculate the exact PI value we should know the value of pka of free -NH2of thr and free - COOH of ala. As these are not given so we can take a generalization. Since it is a neutral amino acid it's PI will lie between 5.5 to 6.3 .PI is the pH at which the net charge of a amino acid is zero.


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