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Journal of pharmaceutical sciences • 2012 | View Paper
“The measured pK(a) of most histidines , whether in the protein or in model compounds, increased by 0.3 pH units or more between 0.02 M and 1.5 M NaCl.”
“The … histidine 119 and histidine 12 of the active site are unusually low and … 1.0 and 0.7 units to higher values when the NaCl concentration is changed from 0.1 M to 0.4 M, whereas … value of histidine 105 shifts only by about 0.2 units.”
European journal of biochemistry • 1969 | View Paper
“Screening of the charges on the surface and histidine units by adding NaCl influences the nucleation-and-growth process in a complicated fashion: at low pH, the growth is improved, while at high pH, the nucleation is limited.”
“For early culture times (6 h), the production of glutamine, citrulline, valine, isoleucine, ornithine, lysine and histidine were all enhanced by the addition of NaCl.”