Stoichiometries of arsenazo III-Ca complexes
نویسندگان
چکیده
منابع مشابه
Passive Ca transport in human red blood cell ghosts measured with entrapped arsenazo III
The rate of Ca influx into ghosts containing arsenazo III changes with time, being most rapid during the first 5 min after Ca is added to the outside and declining thereafter. The rate of Ca influx is a nonlinear function of extracellular Ca and plateaus as the latter is increased above 1 mM. The rate of Ca influx was measured as a function of the transmembrane gradients of Na and K and changes...
متن کاملPassive Ca Transport in Human Red Blood Cell Ghosts Measured with Entrapped Arsenazo III DOUGLAS
The rate of Ca influx into ghosts containing arsenazo III changes with time, being most rapid during the first 5 min after Ca is added to the outside and declining thereafter. The rate of Ca influx is a nonlinear function ofextracellular Ca and plateaus as the latter is increased above 1 mM. The rate of Ca influx was measured as a function of the transmembrane gradients of Na and K and changes ...
متن کاملKinetic scheme for Ca2+-arsenazo III interactions.
Temperature-jump relaxation kinetic studies show that the complex formation between Ca2+ and the metallochromic dye arsenazo III (Ar) is associated with a rapid mode (less than or equal to 10 mus-range) involving both Ca2+ and Na+ of the Na-salt of Ar and a slower mode (approximately 10 ms range) which can be attributed to structural rearrangements in the 1:2 complex CaAr2. The kinetic data sug...
متن کاملPREPARATION AND CHARACTERIZATION OF Mn (III) COMPLEXES
We have prepared and characterized a few Mn (III) complexes by using a few bidentate and tridentate ligands. Spectra of the manganese (III) ion in a variety of molecular environments are reported. On the basis of solution spectra, some of these complexes seem to be typically distorted
متن کاملThe interaction of cations with the dye arsenazo III.
1. The dye arsenazo III combines with a selection of cations to give an altered absorption spectrum. 2. Large metal cations such as Ca2+, La3+ and quadrivalent cations give a 1:1 complex with two new absorption peaks at about 610 nm and 655 nm and a KD of about 10(-6) M. 3. Aliphatic polyamines and complex cobalt ions give a 1:1 complex, with one absorption peak at about 610 nm and a KD from 10...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1983
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(83)84359-8