|Signaling Network Model of Chromatin.|
Schreiber SL, Bernstein BE
Category: chromatin structure ¤ Added: Dec 16, 2002 ¤ Rating: ◊◊
We suggest that common principles underlie both cellular signaling networks and chromatin. To exemplify similarities,wefocus on signaling complexes that form at membrane receptors and on nucleosomes. Multiple signal-transducing modifications on side chain residues of receptor tyrosine kinases (RTKs) and histone proteins are used to create docking sites that facilitate proximal relations of enzymes and their substrates. We argue that multiple histone modifications, like RTK modifications, promote switch-like behavior and en- sure robustness of the signal, and we compare this interpretation with the histone code hypothesis. This view provides insight into chromatin function and epigenetic inheritance.