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Aparna posted an Question
May 12, 2020 • 11:40 am 30 points
  • IIT JAM
  • Biotechnology (BT)

Three pka values are given. which two values we should take for calculation and why?

IIT JAM-2005] 3. Lysine is an amino acid with three ionizable groups. These are the -COOH, a -amino and a-amino groups with pKa values of 2.2, 9.2 and 10.8, respectively. The isoelectric point (pl) for lysine is (a) 5.7 (b) 6.5 (c) 9.2 (d) 10.0

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    Dr. sharad agrawal best-answer

    please watch this video. may he helpful. https://youtu.be/wJjcG4sLO9Q

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    Thank you so much sir🙏.

  • Abhijeet Gaurav Best Answer

    It would be pI = 10 For (lys, Arg, His) Groups containing R-group as NH3+ You have to take average values of 2 big values i.e. The value of last 2 values.

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