dispersal: histamoine
Dispersal: Mast cell releasing histamine
1. RHYTHMS IN HUMAN NATURE

         
31

Ur-Rhythm one: Aggregation and Dispersal

                                  ur-rhythm one
 
     The oldest dance is the pavanne of molecular aggregation and dispersal. It predates life. It operates in the dynamics of ionic attraction and repulsion. The aversions and attractions of charged particles express it, as do the clumping together and pulling apart of polymer chains, and on higher levels in the hydrophilic and hydrophobic foldings of proteins in aqueous environments.
Polarization at all cell membranes depends on concentration gradients of sodium, calcium and potassium ions that gather and disperse through channels and pumps. These molecular movements are essential to cell viability. Enzymes in turn regulate the rates of reactions in the cell, and they aggregate and disperse from their receptor sites. These enzymes themselves are created by the aggregation of
amino acids along ribosomes.  
                                             
                                              Mrna aggregating on ribosomes
                                              Mrna aggregating on ribosomes




PREVIOUS NEXT BEGIN BOOK CONTACT US