Soon after, studies using the patch-clamp technique confirmed the ability of the protein CFTR to transport, selectively, Cl− ions (Drumm et al., 1990; Rich et al., 1990).
What is the exact mechanism responsible for an asymmetric binding site to favor transport selectively when located near the exit the flow is directed to?
However, primary jejunal epithelial cells incubated with HIV-1 carry over only R5 viruses to receptive target cells (Meng et al, 2002), whereas M cells transport selectively X4 viral variants through a chemokine-receptor mediated mechanism (Fotopoulos et al, 2002).
The concentration of the different Igs in tissue might to various extents have been influenced by active transport, selectively operating at the endothelium in the gland but not in the lymph node, or by local synthesis.
At the same time, the acceleration in the discovery of new therapeutic moieties (chemical, biological, genetic and radiological) has led to an increasing demand for delivery systems capable of protecting, transporting, and selectively depositing those therapeutic agents to desired sites.
For example, invertases are a group of enzymes that hydrolyze sucrose into glucose and fructose, which can then be selectively transported across membranes by hexose transporters and/or help create a sucrose gradient.
From there, it can be selectively transported into dopaminergic neurons via the dopamine transporter and elicit inhibitory effects on mitochondrial complex I activity [25].
Bacterial cells were released and selectively transported to downstream layer resulting in a depth-dependent and selective establishment of bacterial communities in the previously sterile artificial soil.
The membranes selectively transported Ac-d-Trp.
Sediment samples collected and analyzed showed that the fine sediment content in the original placed material was selectively transported and deposited offshore, while the coarser component moved onshore.
