The first motif resembles the IS1 sequence, which acts as an inhibitory peptide.
The d4Venus reporter protein includes the mouse ornithine decarboxylase PEST sequence, which acts as a proteolytic signal for intracellular protein degradation (Li et al. 1998).
This cleavage unmasks a new N-terminal sequence, which acts as a tethered ligand that binds to the receptor to initiate multiple signaling cascades [ 2– 4].
These results suggest that the global HIV-1 group M consensus sequence represents an 'optimal' HIV-1 sequence, which acts as an attractor for the evolutionary dynamics within hosts.
Activation of MST3 by calyculin A (a protein serine/threonine phosphatase 1/2A inhibitor) stimulated (auto phosphorylation of MST3(Thr) in the catalytic domain with essentially simultaneous cis-autophosphorylation of MST3(Thr) in the regulatory domain, an event also requiring the MST3 341 376) sequence which acts as a putative docking domain.
Using the tammar HOX genomic sequences as a reference for phylogenetic footprinting, we were able to identify a large number of conserved non-coding genomic sequences which may act as transcription factor binding sites in promoters, regulatory motifs involved in chromatin remodeling or non-coding RNAs that modulate gene expression post-transcriptionally [ 25, 47].
Thus the solution phase reaction is able to amplify sequences, which then act as templates for the solid phase reaction.
These nucleic acid molecules are called functional nucleic acids a term that covers DNA and RNA sequences which can act as enzymes, recognition elements, or molecular switches.
We hypothesize that many exonized TE sequences actually function as post-transcriptional regulators of gene expression, rather than coding sequences, which may act through a variety of double stranded RNA related regulatory pathways.
When analyzed in ScanProsite, multiple putative phosphorylation sites were revealed in OsCNGC protein sequences, which may act as substrates for several kinases in the form of casein kinase II, protein kinase C, tyrosine kinase and cAMP/cGMP kinases [ 46].
