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10. Amino acid histidine has three ionizable groups, with pK, values of 1.8 (Carboxyl group), 6.0 (R group), and 9.2 (Amino group). In a solution at pH 6.6, what percentage of the histidine side chains will carry a positive charge (His+)? 6.6 6.0 + log 0-6= VBCDE A. B. C. D. E. 10% 20% 25%) 50% 75% 4}+ (4)

10. Amino acid histidine has three ionizable groups, with pK, values of 1.8 (Carboxyl group), 6.0 (R group), and 9.2 (Amino group). In a solution at pH 6.6, what percentage of the histidine side chains will carry a positive charge (His+)? 6.6 6.0 + log 0-6= VBCDE A. B. C. D. E. 10% 20% 25%) 50% 75% 4}+ (4)

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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10. Amino acid histidine has three ionizable groups, with pK, values of 1.8 (Carboxyl group), 6.0 (R group), and 9.2 (Amino group). In a solution at pH 6.6, what percentage of the histidine side chains will carry a positive charge (His+)? A. ABCDE B. C. D. E. 10% 20% 25% €) 50% 75% 6.6 6.0 + log 0-6= 4}+ +10g (4)
Transcribed Image Text:10. Amino acid histidine has three ionizable groups, with pK, values of 1.8 (Carboxyl group), 6.0 (R group), and 9.2 (Amino group). In a solution at pH 6.6, what percentage of the histidine side chains will carry a positive charge (His+)? A. ABCDE B. C. D. E. 10% 20% 25% €) 50% 75% 6.6 6.0 + log 0-6= 4}+ +10g (4)
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