a. Explain why, when the imidazole ring of histidine is protonated, the double-bonded nitrogen is the nitrogen
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b. Explain why, when the guanidino group of arginine is protonated, the double-bonded nitrogen is the nitrogen that accepts the proton.
Transcribed Image Text:
CH CHCOO NH3 CH CHCOO NH2 :N NH NH H,NCNHCH CH CH CHCO NH3 NH-
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a Protonation of the doubledbonded nitrogen forms a conjugate ac...View the full answer
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