ライフサイエンスコーパス: silicic acid

1 ransport the soluble precursor of biosilica, silicic acid.

2 DEAE-cellulose, C18 reverse phase resin, and silicic acid.

3 ial in Sargasso Sea sediments indicates that silicic acid, a limiting nutrient today, may have been m

4 rned holographic structures are exposed to a silicic acid, an ordered array of silica nanospheres is

5 ty over large areas of the EEP is limited by silicic acid and iron availability, and because of this

6 , where diatom growth may be limited by both silicic acid and iron.

7 , often failed to recognize the chemistry of silicic acid and its analogues.

8 we make use of the combined distributions of silicic acid and nitrate to trace the main nutrient retu

9 teins that bind to a soluble form of silica, silicic acid, and transport it across the cell membrane

10 ns above and below the "mononuclear wall" of silicic acid at 2 x 10(-3) M (where silicic acid is expe

11 silica-rich colloids in solutions containing silicic acid at concentrations of both the regions above

12 tantial increase in the condensation rate of silicic acids by guiding them to form a silicate trimer

13 NO2 that was purified by solvent extraction, silicic acid chromatography, and reverse-phase HPLC.

14 able and eluted with acetone and methanol in silicic acid chromatography, consistent with being a pol

15 Following chloroform extraction and silicic acid chromatography, CPS-500 was isolated by hig

16 s minimized, the hydrophilic and nonvolatile silicic acid components replace water maintaining a flui

17 Dissolved silicic acid (dSi) availability frequently limits diatom

18 ty, and the unique molecular recognition for silicic acid, followed by the micelle coalescence.

19 se photosynthetic protists take up dissolved silicic acid from the water and precipitate opaline sili

20 an 800 microM solution of 96% 29Si-enriched silicic acid, H4SiO4 (pH approximately 8), with a signal

21 "soil solution," contains silicon, mainly as silicic acid, H4SiO4, at 0.1-0.6 mM--concentrations on t

22 xes was achieved using a rapid and sensitive silicic acid HPLC method combined with digital analysis

23 with high silicic acid in the south and low silicic acid in the north, where diatom growth may be li

24 rentially expressed between waters with high silicic acid in the south and low silicic acid in the no

25 wall" of silicic acid at 2 x 10(-3) M (where silicic acid is expected to start polymerization).

26 p) of 1.7 +/- 1.0 mM, suggesting a transport silicic acid:Na(+) stoichiometry of 2:1.

27 protein: substrate stoichiometry and KM for silicic acid of 20 muM.

28 ion, occurs by condensation of water-soluble silicic acid proximally to biomolecular interfaces throu

29 ated with a superior competitive ability for silicic acid relative to other siliceous plankton such a

30 Calcium ions react with silicic acid released from dissolving porous silicon nan

31 reactants, an aluminium hydroxide dimer and silicic acid, second, the reaction products, two distinc

32 al controls on the biogeochemical cycling of silicic acid [Si(OH)4] on the west Antarctica Peninsula

33 asic silicic acid to form soluble 2/1 (sugar/silicic acid) silicate complexes.

34 promotes the precipitation of silica from a silicic acid solution within minutes.

35 erent water depths to demonstrate changes in silicic acid supply and utilization during the most rece

36 By 17 ka, stratification reduced the surface silicic acid supply leading to increased Si utilization

37 We show that recombinant SITs are Na(+)/silicic acid symporters with a 1:1 protein: substrate st

38 Upon the addition of silicic acid the microrings become rapidly mineralized i

39 efits to many plant species when absorbed as silicic acid through nodulin 26-like intrinsic proteins

40 Certain sugars react readily with basic silicic acid to form soluble 2/1 (sugar/silicic acid) si

41 n which diatoms and radiolarians compete for silicic acid to show that the observed reduction in the

42 n, we calculate changes in the input flux of silicic acid to the oceans.

43 .5-18 ka), wind-driven upwelling replenished silicic acid to the subsurface, resulting in low Si util

44 We identified novel genes for silicic acid transport and formation of silica-based cel

45 Silicic acid transport could be established in reconstit

46 sativa) takes up arsenite mainly through the silicic acid transport pathway.

47 However, the molecular basis of silicic acid transport remains obscure.

48 we identify experimentally tractable diatom silicic acid transporter (SIT) homologues and study thei

49 Because all glycosides fail to react with silicic acid under these conditions, reaction appears to

50 The silicic acid uptake kinetics of diatoms were studied to

51 regions with high and low concentrations of silicic acid, were performed in the Southern Ocean.