For that purpose, the targeted deletion or functional alteration of miRNA function, followed by monitoring of cognitive functions, would be more appropriate.
Particularly, the lycopene cyclase function of the bifunctional enzyme CrtYB from Xanthophyllomyces dendrorhous was inactivated by deletion of functional domain and directed evolution to obtain mutants with solely phytoene synthase function.
It appears plausible that when the environment changes, protein functions are fine-tuned by the addition and/or deletion of functional motifs at the N-termini, or protein localizations are re-assigned by altering signal peptides or transporter activities.
Gene-based diploidization acts at the structural (duplicated gene deletion) and functional (duplicated gene neo- or subfunctionalization) levels (for review, Salse 2012 and Freeling et al. 2012).
For analyzing the function of Snai1 during intrinsic dedifferentiation, hepatocytes were isolated from B6 129-TgN B6 129-TgN Alb-Cre-/+ Snai1tm1MhM Alb-Cre-/+ Snai1tm1MhM Alb-Cre-/+ Snai1tm1MhMnai1 gene [ 28].
In prostate cancer, decreases in PTEN protein expression, either by allelic deletion or functional loss caused by mutation and/or epigenetic modification, can lead to invasive prostate carcinoma (Trotman et al., 2003; Phin et al., 2013).
One reason for attenuation or avirulence is the deletion or functional silencing of a genetic element in the bacterium resulting in the impairment of the intracellular survival capacity of S. typhimurium.
The concept of immunological tolerance is based on two basically independent mechanisms, termed central and peripheral tolerance, respectively, leading to clonal deletion and/or functional inactivation of autoreactive lymphocytes [ 15].
In each case, the statistical significances of the orthology comparisons remained at P < 0.05; for those species in which the full HI set is more highly retained, the significant over-representation is preserved and, for those few species not exhibiting HI-orthologue over-representation, deletion of functional categories does not give rise to significance.
Several of the motifs overlap known ESE motifs from deletion experiments, functional SELEX or SR protein binding sequences (see survey in [ 12]), such as the purine-rich AAGA for SRp40, SRp55, SRp30a and SRp75, ACGA and TGAAG for 9G8, SC35 and ASF, and consensus GAAG for Tra2β [ 51] and motif variants for ASF/SF2.
