(n.) A compound of antimonic acid with a base or basic radical.
Example Sentences:
(1) Precipitates of calcium antimonate were formed almost exclusively in swollen clear pinealocytes, in and along their cell membranes, over their nuclei, in mitochondria, the Golgi apparatus, endoplasmic and integrade reticulums, acervuli, in vesicles surrounding synaptic bars, cytoplasmic matrix, and flocculent extracellular material.
(2) The operon was found to have two functional regions, the promoter-proximal region encoding resistance to arsenite and antimonate and the promoter-distal region encoding arsenate resistance.
(3) The addition of oxalate to a suspension of rabbit peritoneal neutrophils before fixation with glutaraldehyde and postfixation with osmium tetroxide-antimonate greatly enhanced the amount of calcium antimonate precipitate subsequently detectable with the electron microscope.
(4) The resistance pattern included arsenate, arsenite, and antimonate ions.
(5) Results from in vitro titrations of cations with the various antimonate methods and from neutron activation analyses of fixed tissues supported conclusions drawn from fine structural distribution patterns and were interpreted as follows.
(6) During meiotic prophase an accumulation of cation-antimonate precipitates occurs dispersed through the middle pachytene nuclei, the stage in which RNA synthesis reaches a maximum.
(7) This produces a more copious precipitate of calcium antimonate than fixation without oxalate.
(8) The preparations were exposed to acetylcholine (ACh 1X10(-6) M), rapidly fixed at various functional states with 1% osmium tetroxide in 2% potassium antimonate and inspected with electron microscope.
(9) It is suggested that although matrix vesicles contain few calcium capable of reacting to antimonate immediately after their biogenesis, subsequently, large amounts of calcium are accumulated associated with the outer surface membrane of matrix vesicles in the extracellular matrix.
(10) Deposits were reduced at all sites following exposure of eggs to EGTA either prior to or after osmium-antimonate fixation.
(11) Cytochemical localization of Ca2+ in Meissner corpuscles and Merkel cell-neurite complexes in the palatine mucosa of the Mongolian gerbil was studied by a combined oxalate antimonate-microwave irradiation procedure.
(12) Potassium antimonate was used to precipitate calcium in the cochlea of the guinea-pig.
(13) When permeabilized mast cells were exposed to potassium antimonate solution, microtubules attached themselves to the endoplasmic reticulum and many Ca antimonate dots were observed.
(14) Treatment with intramuscular injections of meglumine antimonate (Glucantime) was successful.
(15) These findings suggest that some of the calcium released from cellular stores during fixation with glutaraldehyde is trapped within the neutrophil by oxalate which then reacts with potassium antimonate.
(16) Modifications of the Komnick potassium (pyro)antimonate precipitation method have been widely used for the subcellular localization of a variety of cations.
(17) The localization of pyro-antimonate-precipitable Ca2+ in the undecalcified femur and calvaria of neonatal rats was examined.
(18) Calcium-containing antimonate precipitates were localized principally in nuclei, smooth endoplasmic reticulum, Golgi apparatus, mitochondria, and cytoplasmic processes of both oocytes and follicle cells, and along the plasma membrane in small oocytes.
(19) The strong reaction of neutrophil primary granules with antimonate and dialyzed iron afforded differentiation from unreactive monocyte-macrophage granules and thus distinguished these cell types in culture.
(20) At other stages (zygotene to diplotene), where RNA synthesis falls to a low level, that pattern is not seen; cation-antimonate deposits are restricted to a few masses in areas apparently free of chromatin.
Antimonite
Definition:
(n.) A compound of antimonious acid and a base or basic radical.
(n.) Stibnite.
Example Sentences:
(1) Extrapolation of the amount of FSBA required to inactivate the protein indicated that 1 mol of FSBA was sufficient to inhibit the activity of 1 mol of ArsA protein in the absence of substrates, while only 0.5 mol was required in the presence of the anionic substrate antimonite.
(2) The estimated Ki values for FSBA were 0.4 mM in the absence of antimonite and 0.1 mM in the presence of antimonite, suggesting that the binding of antimonite increased the affinity of ArsA protein for FSBA.
(3) ATP was partially protected from trypsin digestion, while the anionic substrate antimonite alone had no effect on proteolysis.
(4) Partial deletion of 56 bp from the 3' end of the arsC gene resulted in loss of resistance to arsenate; the determinant retained arsenite and antimonite resistances.
(5) The plasmid-borne arsenical resistance operon encodes an ATP-driven oxyanion pump for the extrusion of the oxyanions arsenite, antimonite and arsenate from bacterial cells.
(6) In the presence of antimonite the weight average molecular mass increased to a mass in excess of 100 kDa.
(7) The ars operon was induced by arsenate [As(V)], arsenite [As(III)], and antimonite [Sb(III)], to which the strains were resistant, plus Bi(III) in S. aureus.
(8) The arsenate, arsenite, and antimonite resistance was shown to be inducible by all three heavy metal ions.
(9) These results demonstrate that ATP and antimonite together produce a conformational change which is different from that of the ArsA protein in the presence of either substrate alone and suggest interaction between the oxyanion and ATP binding sites.
(10) When expressed in Escherichia coli this ATP-driven oxyanion pump catalyzes extrusion of the oxyanions arsenite, antimonite and arsenate.
(11) The arsenate, arsenite, and antimonite resistance region of the Staphylococcus xylosus plasmid pSX267 was subcloned in Staphylococcus carnosus.
(12) Membranes of uncA mutants containing both the ArsA and ArsB proteins exhibit arsenite(antimonite)-stimulated ATPase activity.
(13) The catalytic component of the pump, the 63 kDa ArsA protein, hydrolyses ATP in the presence of its anionic substrate antimonite (SbO2-).
(14) The cloned staphylococcal ars operon confers resistances to arsenate, arsenite, and antimonite in S. aureus and Bacillus subtilis.
(15) The inactivation of arsR also resulted in reduction of resistance to arsenite and antimonite, while arsenate resistance was unaffected.
(16) Purified ArsA protein is an arsenite(antimonite)-stimulated ATPase.
(17) ATP and antimonite together provided complete protection, indicating interaction of the anion- and nucleotide-binding sites.
(18) The same operon was also expressed in E. coli and conferred resistance to arsenite but less resistance to arsenate and antimonite.
(19) In most cases these provide resistance to both the oxyanions of +III oxidation state, antimonite and arsenite, and the +V oxidation state, arsenate.
(20) The ArsA protein, the catalytic component of the plasmid-encoded resistance system for removal of the toxic oxyanions arsenite, antimonite, and arsenate from bacterial cells, catalyzes oxyanion-stimulated ATP hydrolysis.