Previous studies have shown that the closely related Oct1 is dynamically phosphorylated [38], and site-directed mutagenesis of potential phosphorylation sites in Oct4 indicated a potential role for phosphorylation in regulating homodimer complex formation [18].
Because of the safety issues with viral vectors, including the insertional mutagenesis and potential tumor formation, non-viral transfection methods are preferred for clinical translation.
Systematic mutagenesis of potential Zn2+ coordinating residues lead to the identification of three residues on the predicted extracellular face of the transporter, 193His in the second extracellular loop, 375His at the external end of the putative transmembrane segment (TM) 7, and 396Glu at the external end of TM 8, forming three coordinates in the endogenous Zn2+ binding site.
Using promoter truncation experiments and site-directed mutagenesis within potential transcription factor binding sites, we suggest that the minimal promoter contains more than one binding site for the recently identified parasite-specific ApiAP2 transcription factors.
The structures nicely suggest autoinhibition of AnkR, and guides mutagenesis of potential binding sites for peptides from membrane protein targets.
The integration of the reporter gene within the genome has raised concerns about the risk of mutagenesis and potential oncogenicity [ 87].
Furthermore, the enhancer-less nature of the A2UCOE implies that it should possess far lower insertional mutagenesis activation potential than commonly used enhancer-associated viral and nonviral promoters.
The primers used for site directed mutagenesis of potential S/Ts within the hGIRK4 sequence are listed in supplementary Table S1.
Insertional mutagenesis with potential activation of proto-oncogenes as a first hit in a multistep scenario of cancer development thus represents one of the major hurdles to a more widespread exploration of gene-based treatments (Kustikova et al, 2010).
This involves, e.g., the mutagenesis of potential active center residues and their subsequent kinetic analysis and is based upon the identification of the invariant residues identified in the sequence-based CAZy family classification (http://www.cazy.org; Cantarel et al. 2009).
