Apatites deficient in divalent cations
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 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 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 levels change in nephrotic syndrome.
UNLABELLED Divalent cations (calcium, magnesium, zinc, cooper, manganese) play an important role in various biological processes. Different acute or chronic renal disorders in children or adults modify the urinary excretion of these cations and may influence their concentrations in organism. AIM Evaluation of the changes of some divalent cations levels (Cu, Zn, Mg, Ca) in acute renal diseases...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1957
ISSN: 0091-0635
DOI: 10.6028/jres.058.035