The artPQ gene products are unlikely to be involved in glutamine transport since the GBS glutamine transporter has been identified [ 17].
Currently, no Cd-specific influx transporter has been reported for plant cells, however, transport can be realized by ZIP transporters, albeit at a low affinity; ZIP transporters have a highly specific transport affinity for Zn or Fe [ 33].
The concentration of dipeptide used in these transport experiments were submicromolar, and the basolateral peptide transporter has been reported to be of relatively low (millimolar) affinity (25), so the efflux rate across the basolateral membrane would be expected to be directly proportional to the intracellular peptide concentration.
"The Transporter" has been rated PG-13 (Parents strongly cautioned) for violence and implied sexuality.
Through this study a preliminary binding site map has been developed, and a potent commercially available competitive inhibitor of the ASCT2 transporter has been identified.
High expression of the system L amino acid transporter has been observed in clinically important tissues including tumors and the blood-brain barrier.
Although the Xenopus oocyte expression system is particularly suitable for expression of membrane proteins and powerful in screening for novel transporter activity, only few examples of successful expression of ABC transporter has been reported.
A second transporter has been postulated to export iron across the basolateral surface to the circulation.
OsNramp1, an iron transporter, has been established as a Cd-influx transporter in the plasma-membrane (Takahashi et al. 2011).
Up to date, only one calcium transporter has been identified in the plasma membranes of fish spermatozoa.
A comparison of exemplar tree showing phylogenetic relationships of Arabidopsis and rice proteins in ABC transporter has been done in the nomenclature, which will be helpful for searching the ABA transporter in rice.
