What's the difference between sulphate and sulphite?
Sulphate
Definition:
(n.) A salt of sulphuric acid.
Example Sentences:
(1) Sixteen smooth Brucella strains were lysed and digested by proteinase K, and the LPS fractions analysed by sodium dodecyl sulphate polyacrylamide gel electrophoresis.
(2) The decomposition of nafcillin and penicillin G solutions was hastened significantly by magnesium sulphate due to effect on the pH values of the solutions.
(3) The K5 polysaccharide was N-deacetylated (by hydrazinolysis) and N-sulphated, and was then incubated with detergent-solubilized enzymes from a heparin-producing mouse mastocytoma, in the presence of adenosine 3'-phosphate 5'-phospho[35S] sulphate ([35S]PAPS).
(4) Plasma noradrenaline levels were depressed by 50% when demedullated fetuses were also subject to peripheral sympathectomy by guanethidine sulphate treatment.
(5) Chemically isolated separate preparations of the non-aggregating protein-chondroitin-keratin sulphate (PCKS) fraction from the hyaline cartilage and hyaluronic acid (HUA) of the vitreous body and of the umbilicus were investigated by electron microscopy.
(6) Granules in a few cells also contained sulphated mucin.
(7) Deficiency of glucosamine-6-sulphatase activity leads to the lysosomal storage of the glycosaminoglycan, heparan sulphate and the monosaccharide sulphate N-acetylglucosamine 6-sulphate and the autosomal recessive genetic disorder mucopolysaccharidosis type IIID.
(8) PT painting resulted in rather higher sensitivity with Triton X-100 than with sodium lauryl sulphate.
(9) For binding measurements self-diffusion equilibrium dialysis with dodecyl [35S] sulphate was used.
(10) We tested for the distribution of basement membrane (BM) components collagen IV, laminin, heparan sulphate proteoglycan, fibronectin, for S100 protein and for the presence of interstitial collagens III and V. Laminin was generally noted in association with Schwann cells, but collagen IV occurred with perineural cells.
(11) Ammonium sulphate fractionation followed by immunoaffinity chromatography on a three column system using Protein A-Sepharose coupled D5, produced purified p29.
(12) An enzyme (EC 2.8.2.1) that catalyses the transfer of sulphate from adenosine 3'-phosphate 5'-sulphatophosphate to phenols was purified approx.
(13) Platelet factor 4 was compared with protamine sulphate, which has similar biological properties, by electrophoresis at pH 2.2, in which both migrated as single bands but with differing mobility, and by amino acid analysis which showed a more normal distribution of residues than occurred in protamine sulphate.
(14) (a) Ammonium sulphate precipitation and gel filtration on Sepharose 4B.
(15) This inhibition was partially reversed on addition of the translocated substrates sulphate or selenate to the external medium: selenite which is not translocated does not protect against DIDS inhibition.
(16) Protamine sulphate in vitro antagonized anticoagulant properties but did not protect mice from toxic envenomation; because venom was also neurotoxic and showed a curare like effect at the neuromuscular junction.
(17) Degradation products of dermatan sulphate were not detected by either gel filtration or affinity chromatography on Polybrene-Sepharose at any time in either plasma or urine, indicating that administered dermatan sulphate is not catabolised by man.
(18) Internal alkalinization could also be induced by oleate upon the addition of potassium sulphate.
(19) Addition of rising concentrations of zinc sulphate to rat PRP produced inhibition of ADP-induced platelet aggregation.
(20) Both surfactants were extensively degraded in vivo to yield a common metabolite, butyric acid 4-[35S]sulphate, the major urinary radioactive component.
Sulphite
Definition:
(n.) A salt of sulphurous acid.
Example Sentences:
(1) The reactivity of the three disulphide bridges of insulin towards sodium sulphite was studied by amperometric titration of the liberated thiol groups.
(2) Sulphite bleached the flavin of cellobiose oxidase, but gave no reaction with the 31 kDa haem protein, suggesting an absence of flavin.
(3) The oxidation of vitamin B1 to thiochrome is stopped by the addition of sodium sulphite.
(4) Xanthine oxidase deficiency was demonstrated in a jejunal biopsy specimen, whereas the excretion of sulphur containing substances was considered to be characteristic of sulphite oxidase deficiency.
(5) The theoretical potential of a solution of 1 M S2O2-4 and 2 M (bi)sulphite at pH 7 was calculated to be -0.386V.
(6) The passive net transport of Li+ and Na+ across the human red cell membrane was accelerated by the divalent anions carbonate, sulphite, oxalate, phosphite and malonate.
(7) Examination of the plasma showed that S-sulphonates were present in both pre- and post-hepatic blood, whereas free sulphite was detectable in the portal blood only.
(8) In rat liver most of the sulphite oxidase was present in the nuclear fraction and only a small portion in the microsomes.
(9) Different bacterial cell fractions of Thiobacillus neapolitanus were examined in order to localize the active sites for thiosulphate and sulphite oxidation.
(10) Mercaptoethanol is effective in both restoring enzyme activity and removing bound sulphite from protein.
(11) The classification scheme used is based upon the fact that determination of the sulphite content of a food is influenced more by the treatment and cleanup of the test solution than by the final determinative step.
(12) It is probably this multiplicity of biochemical and genetic mechanisms that accounts for the frequency with which the production of sulphite is observed in wild strains in nature.
(13) The equilibria were established either by treating the oxidized electron carriers with dithionite, or by treating flavodoxin hydroquinone or methyl viologen semiquinone with (bi)sulphite.
(14) The low-molecular-weight acceptor is tightly bound to enzyme B of the yeast system and, apparently, accepts the sulpho group of adenosine 3'-phosphate 5'-sulphatophosphate and is released as bound sulphite only in the presence of enzymically or chemically reduced fraction C. It is proposed that the low-molecular-weight acceptor is a carrier peptide which, after release of the reduced sulphur, becomes re-oxidized and returns to enzyme B.
(15) No difference between resistant and sensitive strains with respect to glyceraldehyde-3-phosphate dehydrogenase sensitivity to sulphite, or to intracellular glutathione content, were revealed.
(16) Sulphite was more effective than the four used thiols and enhanced the activity against serum albumin up to 3.2 times and against keratin up to 2.9 times.
(17) The glycolysis of lactoperoxidasesensitive streptococci suspended in glucose solution was not inhibited by sulphite, cyanate, cyanide or the ;235 compound' but was inhibited by sulphur dicyanide.
(18) A new colorimetric method for the determination of sulphite based on its reaction with Ellman's reagent, 5,5'-dithiobis(2-nitrobenzoic acid) is described and compared for sensitivity with the p-rosaniline-HCHO method.
(19) Satisfactory recoveries were obtained only with mA agar (Rippey & Cabelli) and dextrin-fuchsin-sulphite agar (Schubert), but neither was sufficiently selective.
(20) It is suggested that the resistance of these mutants to azide is due to an increased activity of NADPH-sulphite reductase.