title: A potentiometric titration study of the interaction of heparin with metal cations.
abstract: Potentiometric titrations, at ionic strengths (I) ranging from 0.0057 to 0.336, suggest that Ca2+, Cu2+, Li+ and Na+ bind to heparin in a manner that depends on cation identity. These interactions were less affected by the value of I than those of heparin with Mg2+, which binds weakly below I0.050 and with K+, which binds weakly at I0.0057. Of the interactions studied, that of heparin with Cu2+ was the least readily reversible.
authors.affiliation: Department of Molecular and Cell Biology, University of Aberdeen, Marischal College, Scotland, U.K.
authors.forename: D
authors.initials: D
authors.lastname: Grant
authors.forename: W F
authors.initials: WF
authors.lastname: Long
authors.forename: F B
authors.initials: FB
authors.lastname: Williamson
mesh_terms: D002412:Cations; D006493:Heparin / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008670:Metals / Q000737:chemistry*; D009994:Osmolar Concentration; D011199:Potentiometry
chemical_list: D002412:Cations; D008670:Metals; D006493:Heparin