Affiliation:
1. Department of Chemistry, University of Winnipeg, Winnipeg, Manitoba R3B 2E9, Canada
Abstract
The pH-dependence of selected 13C chemical shifts reflects the state of ionization of the imidazole ring in both imidazole and L-histidine. Titration of the amino and carboxyl groups of histidine also perturbs the shifts. The coupling constants 1J (13C(2),H) and 1J (13C(5),H) for both compounds also vary with pH, but in L-histidine these constants are relatively insensitive to the titration of groups outside the imidazole ring.
Subject
Cell Biology,Molecular Biology,Biochemistry
Cited by
29 articles.
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