It was shown in prior studies of BP10001 and also other xylose-fermenting strains of S. cerevisiae that low concentrations of glucose stimulate the uptake of xylose and only under these conditions a significant amount of true co-utilization of glucose and xylose becomes eventually possible [ 22, 42].
But among them, adsorption was found to be very efficient and common due to the low concentration of metal uptake and economically feasible properties.
Uptake 1 predominates at low concentrations of both catecholamines and MIBG, whereas uptake 2 predominates at higher concentrations [ 3].
Thus, the improvement of P uptake from low concentrations of P in soil by cereal crops is crucial for sustainable agriculture and food security.
Here, we describe cloning and functional expression of two sugar transporters that support efficient uptake of low concentrations of L-arabinose in S. cerevisiae.
Evidence suggests that DAT1 is hypofunctional in SHR, since despite the increased number of DATs, inhibition of dopamine uptake by low concentrations of methylphenidate or nomifensine increased the electrically-stimulated release of dopamine to the same extent in SHR and WKY nucleus accumbens and caudate-putamen [ 58, 59].
The first rate of Ca2+ uptake shows that the initial velocity of Ca2+ uptake was slow at low concentrations of Ca2+ and increased sigmoidally to 10 nM Ca2+/s/mg protein at 300 μM Ca2+.
A similar result was obtained for the uptake at very low concentrations of iron across zebrafish gills and was attributable to proton-dependent metal transporters (Bury and Grosell, 2003).
The large increase of Ca2+ uptake observed at low concentrations of chitosan, which appears to be due to the membrane hyperpolarization, is most interesting and would deserve further investigation regarding this remarkable effect of the hyperpolarization of the plasma membrane on the uptake of the cation.
Chronic exposure of adipocytes to low concentrations of TNF-alpha strongly inhibits insulin-stimulated glucose uptake.
It often increases the plant's uptake of inorganic compounds, such as nitrate and phosphate from soils having low concentrations of these key plant nutrients.
