A new + interesting paper on the guanidine riboswitch in Synechocystis and other cyanobacteria:
"Deciphering guanidine assimilation and ri"boswitch-based gene regulation in cyanobacteria for synthetic biology applications" | PNAS www.pnas.org/doi/10.1073/...
Guanidine is well known as a denaturing agent. However, recent studies have demonstrated
both the widespread synthesis of guanidine, e.g., in plant...
