Using confidential U.S. customs data on trade transactions between U.S. importers and Bangladeshi exporters between 2003 and 2009, and information on the geographic location of Bangladeshi exporters, we show that the presence of neighboring exporters that previously transacted with a U.S. importer is associated with a greater likelihood of matching with the same U.S. importer for the first time.
Thus, we speculate that ABCB4 has a dual role as a floppase or as an exporter, depending on the presence of bile salts and on the aqueous solubility of the substrate.
The gains reflect the presence of exporters like Siemens as well as MAN, a maker of trucks; or Bayerische Motoren Werke, the maker of BMW cars; or SAP, which sells software used by companies to run their operations.
The l-lysine exporter also exports l-arginine.
The presence of copper exporters in nonusers and the sheer number of known copper exporters suggest that copper can be taken up accidentally and these organisms need a defense mechanism against copper ions that inadvertently enter the cell.
Of the remaining operons, several are on small contigs in more fragmented draft genomes making it difficult to rule out the presence of a similar exporter.
While the export of the cofactor could be an in silico response to an imbalance of cofactors and there is no evidence in the literature for the presence of a tetrahydrosarcinapterin exporter, it is possible that an enzyme outside the cell wall may utilize the cofactor as a substrate.
Likewise Ec042-3239 encoded a protein that was 96% identical to KpsT while the protein encoded by Ec042-3240 was 99% identical to KpsM indicating the presence of an inner-membrane ABC capsular polysaccharide exporter [102], [103].
One of the causes of this phenomenon is the presence of rules of origin (RoOs), which require exporters to comply with specific conditions when utilizing an FTA scheme.
By refusing to accept American maize because of the possible presence of GM strains, the EU has denied American exporters $200m in sales to Spain and Portugal each year.
