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  • 标题:Direct Measurement of the pK Values of an Alkaline Bohr Group in Human Hemoglobin
  • 本地全文:下载
  • 作者:J. V. Kilmartin ; J. J. Breen ; G. C. K. Roberts
  • 期刊名称:Proceedings of the National Academy of Sciences
  • 印刷版ISSN:0027-8424
  • 电子版ISSN:1091-6490
  • 出版年度:1973
  • 卷号:70
  • 期号:4
  • 页码:1246-1249
  • DOI:10.1073/pnas.70.4.1246
  • 语种:English
  • 出版社:The National Academy of Sciences of the United States of America
  • 摘要:Proton nuclear magnetic resonance spectra of normal and des-(his 146{beta}) human hemoglobin in the aromatic resonance region have been compared at different pH values. From these measurements, a pK value for histidine 146{beta} of 7.1 in carbonmonoxyhemoglobin and 8.0 in deoxyhemoglobin has been found. These pK values confirm the proposed role of histidine 146{beta} in the alkaline Bohr effect.
  • 关键词:NMR studies of Hb ; histidine titrations
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