The formation constants of ionomycin with divalent cations in 80% methanol/water
نویسندگان
چکیده
منابع مشابه
Divalent Cations
Inhibition by polyvalent cations is a defining characteristic of voltage-gated proton channels. The mechanism of this inhibition was studied in rat alveolar epithelial cells using tight-seal voltage clamp techniques. Metal concentrations were corrected for measured binding to buffers. Externally applied ZnCl 2 reduced the H 1 current, shifted the voltage-activation curve toward positive potenti...
متن کاملDivalent Cations
AB STRACT The effects of external Zn+2 and other divalent cations on K channels in squid giant axons were studied. At low concentration (2 mM) Zn+2 slows opening kinetics without affecting closing kinetics . Higher concentrations (5-40 mM) progressively slow opening and speed channel closing to a lesser degree. In terms of "shifts," opening kinetics are strongly shifted to the right on the volt...
متن کاملEffect of Divalent Cations
brane uptake of IFB, were completely reversible. These findings are consistent with the concept that the formation of calcium salt bridges is essential for attachment of IFB,2 to the ileal-absorptive surface.
متن کاملDivalent Cations and EDTA
The colicin A lysis protein, Cal, is synthesized at the same time as colicin A by Escherichiu coli harbouring plasmid pColA after induction by mitomycin C. Its function in the induced bacteria involves the release of colicin A, quasi-lysis, the death of the producing cells and the activation of the outer membrane phospholipase A. We have found that these various functions are affected different...
متن کاملThe effects of divalent cations on trypsin.
Although the activating effect of metal ions, such as Co++ and Mn*, on a variety of aminopeptidases has long been known (see Smith (2)), no requirements of the pancreatic proteinases for these ions have been demonstrated. It has been found, however, that calcium salts improve the yield of trypsin from trypsinogen (3) and that they increase the stability of trypsin at alkaline pH (4, 5). Earlier...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1991
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)92980-7