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How to draw titration of amino acids ？what happen when ph increase from low to high？ 1. what does it means when pka and ph are equal？ 2. Did I calculate p1 correctly？？ 3. Does cysteine lose H in SH ？should it be positively charged or negatively charged after lose H and why？？

How to draw titration of amino acids ？what happen when ph increase from low to high？ 1. what does it means when pka and ph are equal？ 2. Did I calculate p1 correctly？？ 3. Does cysteine lose H in SH ？should it be positively charged or negatively charged after lose H and why？？

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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How to draw titration of amino acids ？what happen when ph increase from low to high？ 1. what does it means when pka and ph are equal？ 2. Did I calculate p1 correctly？？ 3. Does cysteine lose H in SH ？should it be positively charged or negatively charged after lose H and why？？
Histidine. аон H₂N²-C - H CH₂ || M \N// + H Co Coo +1 H ~ H³N² C-H = H₂N-C-H ~ H₂N-C-H PK9=PH=1.82 CH² Pha=PH=6.0 CH² PRAZPH=9.17 07/1₂ en IMH M \N/ +H (1+) (2+) cysteine cos аон 1 NH÷-C-H ~ M÷-C-H GCH2 1 SH (+1) P₁ = CH2 हम (0) Pra-PH=1-711 P₁ = \N/ +H (0) 6.0+ 9.7 2 2 1.71+8.33 كيف CH₂ SH (-1) = 15.17 2 N/ (-1) =NH₂=C-H = H₂C-H CH₂ Pha-PH=8.331 Pha=PH= 10.78 7.585, S e er n t
Transcribed Image Text:Histidine. аон H₂N²-C - H CH₂ || M \N// + H Co Coo +1 H ~ H³N² C-H = H₂N-C-H ~ H₂N-C-H PK9=PH=1.82 CH² Pha=PH=6.0 CH² PRAZPH=9.17 07/1₂ en IMH M \N/ +H (1+) (2+) cysteine cos аон 1 NH÷-C-H ~ M÷-C-H GCH2 1 SH (+1) P₁ = CH2 हम (0) Pra-PH=1-711 P₁ = \N/ +H (0) 6.0+ 9.7 2 2 1.71+8.33 كيف CH₂ SH (-1) = 15.17 2 N/ (-1) =NH₂=C-H = H₂C-H CH₂ Pha-PH=8.331 Pha=PH= 10.78 7.585, S e er n t
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