Most physiological processes are subjected to molecular regulation by growth factors, which are secreted proteins that activate chemical signal transduction pathways through binding of specific cell-surface receptors.
BIR2 and BIR3 domains of cIAP1, CIAP2 and XIAP are required for binding to and suppression of specific cell death-inducing caspases [ 19].
The transport of pigment organelles during aggregation and dispersion is regulated by signaling mechanisms initiated by the binding of specific hormones to cell surface receptors, which results in the modulation of cAMP concentrations [4], [5].
Using magnetic glyco-nanoparticles, the binding of specific saccharides to the cell surface of various cell types and tissues has been documented both in vitro and in vivo via magnetic resonance imaging (van Kasteren et al. 2009; El-Boubbou et al. 2010).
In this regard, binding motifs for distinct transcription factors were enriched around the center of STAT binding sites in specific cell types, suggesting that cell-specific gene regulation of STATs might be driven by cooperative activity of cell-type restricted or enriched TFs.
Fcγ receptor binding on endothelial cells is also a critical process after binding of specific autoantibodies to blood cells (for example, ANCA binding to neutrophils) because it initiates binding to the target tissue and subsequent destruction, such as that seen in vasculitis.
Additionally, investigation of all the STAT binding sites in different cell types demonstrated that these particular combinations of TFs were not only limited to subsets of the sequences where a given STAT was highly enriched (top 600 sequences) but also could be found in the majority of STAT5 binding sites in specific cell types.
Construction of chimeric fusion proteins by mixing the A and B domains of various binary toxins to achieve more selective binding of toxin to specific cell types such as tumor cells can be achieved.
There is no evidence that childhood BCP ALL is caused by an oncogenic virus (MacKenzie et al, 2006), and the positive association with DP2 suggests that binding of specific peptide(s) and T-cell activation are involved in causation, which is inconsistent with immune evasion by an oncogenic virus.
