me amino group = 9.04, and pKaR for the side chain - 12.48

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter23: Enzymes
Section: Chapter Questions
Problem 23.75P
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Arginine has these pKa values: pka1 for the carboxyl group = 2.17, pKa2 for the amino group = 9.04, and pKaR for the side chain - 12.48
At pH 7, which groups in arginine are protonated?
amino and side chain
O B. none
Oç all
OD. carboxyl and side chain
side chain only
OE.
Transcribed Image Text:Arginine has these pKa values: pka1 for the carboxyl group = 2.17, pKa2 for the amino group = 9.04, and pKaR for the side chain - 12.48 At pH 7, which groups in arginine are protonated? amino and side chain O B. none Oç all OD. carboxyl and side chain side chain only OE.
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