All these genes were located within sub-telomeric clusters and were likely not transcribed at any stages, except when translocated to the active expression site in small sub-populations of BFs.
Paracrine Wnt3 plays an essential role in promoting the active expression of insulin in both hippocampal and OB-derived neural stem cells.
We inserted a copy of a procyclin gene in the active VSG221 expression site, however high level expression of procyclin appeared to be toxic in bloodstream form T. brucei (S.T. and G.R. unpublished results).
Homogeneity of the VSG coat expressed was ensured by maintaining trypanosome transfectants with drug markers in the active VSG expression site on the appropriate drug selection pressure to prevent switches to different VSG expression sites.
The blots were subsequently hybridised with probes for a range of housekeeping genes including the chromatin proteins TDP1 [28] and TbISWI [29], NUP1 [30], structural proteins like the flagellar protein PFR2 [31], actin, tubulin and the 18S ribosomal RNA as well as eGFP (which is present in the active VSG221 expression site [13]), ESAG5 and ESAG6/7.
Surprisingly, a repressive gradient that extends from the chromosome end resulted in the active VSG expression site shutting down.
As many ESAGs are members of large families and are dispersed in the genome [16] [18], and as a low level of transcription occurs even from 'inactive' BESs, determining the precise function of individual ESAGs in active expression sites is challenging.
According to the account on offer, (non-intentional) intention acquisitions are distinct from (intentional) intention formations, in part because the latter is an active expression of an agent's skilled deliberative activity.
For a collusion to take hold, the conflicts of the "power figure" have to be communicated and sensed by others as an overriding need which seeks active expression in the form of a theme.
However, in atopics this immune deviation process fails, leading instead to consolidation of allergen-specific Th2 immunity and its eventual active expression in the airways.
This indicates that in the overall network they are connected only to nodes that show no (active) expression in our compendium.
