The equilibrium interactions of the metallochromic indicator arsenazo III with calcium at physiological ionic strength and pH were investigated spectrophotometrically and with the aid of a calcium electrode. Evidence suggests the formation of more than one dye-calcium complex. The analysis of data obtained over a 10,000-fold range of dye concentrations concludes that at the concentrations used for in vitro biochemical studies (10--100 microM), arsenazo III absorbance changes in response to calcium binding primarily involve the formation of a complex involving two dye molecules and two calcium ions. At millimolar dye concentrations, typical of physiological calcium transient determinations in situ, a second complex involving two arsenazo III...
Dorogi PL, Neumann E. Spectrophotometric determination of reaction stoichiometry and equilibrium con...
Using murexide (Mx), a metallochromic indicator, and a dual wavelength spectrophotometer with a high...
The metallochromic indicator dyes, arsenazo III and chlorophosphonazo III, were used in squid giant ...
Dorogi PL, Santarius U, Neumann E. Arsenazo I and tetramethylmurexide as optical calcium indicators....
A method for determining the stoichiometry of one-product reactions involving a metal ion and an org...
The equilibrium reactions of the metallochromic indicator dye Antipyrylazo III with calcium at physi...
Experiments to determine the apparent dissociation constants of the Ca and Mg complexes of arsenazo ...
In vitro and in situ tests have been run to characterize the reaction of the mettalochromic indicato...
Equilibrium binding properties of the metallochromic indicator Arsenazo III (AIII) were characterize...
Clemen S, Rabl C-R, Neumann E. Kinetic calibration of the calcium indicator arsenazo III. I. Stopped...
Dorogi PL, Neumann E. Spectrophotometric determination of reaction stoichiometry and equilibrium con...
We describe an analytical procedure for determining serum calcium, using the ligand Arsenazo III in ...
Dorogi PL, Moss K, Neumann E, Chang HW. Spectrophotometric determination of reaction stoichiometry a...
A Ca-sensitive dye, arsenazo III, has been incorporated into resealed human erythrocyte ghosts and c...
Intact single skeletal muscle fibers were micro-injected with either of the metallochromic indicator...
Dorogi PL, Neumann E. Spectrophotometric determination of reaction stoichiometry and equilibrium con...
Using murexide (Mx), a metallochromic indicator, and a dual wavelength spectrophotometer with a high...
The metallochromic indicator dyes, arsenazo III and chlorophosphonazo III, were used in squid giant ...
Dorogi PL, Santarius U, Neumann E. Arsenazo I and tetramethylmurexide as optical calcium indicators....
A method for determining the stoichiometry of one-product reactions involving a metal ion and an org...
The equilibrium reactions of the metallochromic indicator dye Antipyrylazo III with calcium at physi...
Experiments to determine the apparent dissociation constants of the Ca and Mg complexes of arsenazo ...
In vitro and in situ tests have been run to characterize the reaction of the mettalochromic indicato...
Equilibrium binding properties of the metallochromic indicator Arsenazo III (AIII) were characterize...
Clemen S, Rabl C-R, Neumann E. Kinetic calibration of the calcium indicator arsenazo III. I. Stopped...
Dorogi PL, Neumann E. Spectrophotometric determination of reaction stoichiometry and equilibrium con...
We describe an analytical procedure for determining serum calcium, using the ligand Arsenazo III in ...
Dorogi PL, Moss K, Neumann E, Chang HW. Spectrophotometric determination of reaction stoichiometry a...
A Ca-sensitive dye, arsenazo III, has been incorporated into resealed human erythrocyte ghosts and c...
Intact single skeletal muscle fibers were micro-injected with either of the metallochromic indicator...
Dorogi PL, Neumann E. Spectrophotometric determination of reaction stoichiometry and equilibrium con...
Using murexide (Mx), a metallochromic indicator, and a dual wavelength spectrophotometer with a high...
The metallochromic indicator dyes, arsenazo III and chlorophosphonazo III, were used in squid giant ...