Other changes in physiology in response to low growth rates
At low growth rates, the number of significantly abundant proteins related to cell motility, intracellular trafficking, secretion and vesicular transport, as well as defense mechanisms, was increased compared to those of high growth rates (Figs. 2 and 3). The majority of signal transduction proteins detected only at low growth rates belonged to histidine kinases. Two proteins that might be related to the production of cyclic-di-GMP and biofilm formation (Gmet 0700 and Gmet 0742) , as well as a protein related to adhesion to Fe(III) oxide (Gmet 0556) , were also detected only at low growth rates (Fig. 5).