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[Solved]: please help  Match the figures of the protona
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(Solved): please help  Match the figures of the protonation states of histidine shown below to the \( \ma ...



please help 
Match the figures of the protonation states of histidine shown below to the \( \mathrm{pH} \) at which this protonation state
How many hydrogen bond donors on the histidine side chain are available at \( \mathrm{pH} 8.0 \) ?
Match the figures of the protonation states of histidine shown below to the \( \mathrm{pH} \) at which this protonation state would be dominant. The \( \mathrm{pKa} \) values for histidine are \( \mathrm{pK} /(\alpha-\mathrm{COOH})=1.80, \mathrm{pK} \mathrm{R} \) (side chain) \( =6.04 \), and \( \mathrm{pK}_{2}\left(\mathrm{NH}_{3}{ }^{+}\right)= \) \( 9.33 . \) How many hydrogen bond donors on the histidine side chain are available at \( \mathrm{pH} 8.0 \) ?


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