Thus, it appears that the 5' end polymorphism confined to a few miRNAs is a result of Drosha processing shift while the more common 3'end variations observed in most miRNAs is due to modifications introduced after the Drosha/Dicer processing.
Thus, the processing shift might be a mechanism to fine tune gene expression and the change of dominant variants in different cell stages might add more flexibility to regulate target genes during T cell differentiation.
Thus, we hypothesized that some other miRNAs where both 5' and 3' strands get selected into RISC and the 2 mature miRNA strands do not form a typical ds-miRNA with 2 nt overhang might also exhibit Drosha processing shift.
This processing shift may correspond to changes in drift rate in a diffusion model (Voss, Rothermund & Brandtstädter, 2008) and to a decrease in encoding noise or a decrease in forgetting.
The news agency also reports that Microsoft -owned LinkedIn is one of several other multinational companies planning to make the same data processing shift for international users — with LinkedIn's new terms set to take effect on May 8, moving non-Europeans to contracts with the U.S.-based LinkedIn Corp.
Restore family and community owned farming and local food production & processing; shift to deep root farming and organic farming.
In fact, we identified that miR-342 might be another example of Drosha processing shift because although its both strands are selected, the two strands do not make a typical ds-miRNA that has 2 nt overhang in both termini.
Although it appears that both strands could be selected from either of them, they are actually derived from two different ds-miRNAs derived from one pri-miRNA due to Drosha processing shift.
The results show both ends of miR-342 have two dominant variations respectively, and can be assembled into 2 perfect pre-miR-342s (Figure 4), suggesting that Drosha processing shift occurs in miR-342 and generates two pre-miR-342s from one pri-miR-342.
Taken together, Drosha processing shifts may be a not uncommon event that has been largely ignored in the literature so far.
