Diverse organisms on the earth recognize any kind of environmental informations. Endless straggle for their life since their birth, several billion years ago, provides them with faster, more sensitive and highly complex processes for response the stimuli and they adapt their circumstances. I am interested in the molecular mechanism to process internal signals generated by environmental stimuli, such as light, oxygen, attractants and so on. I am now trying to clone whole genes for taxis in purple sulfur bacterium, Ectothiorhodospira halophila, by PCR with probes based on the consensus sequence. Transducer molecules fused with GFP can be observed under fluorescent microscope system and analyzed dynamic motion in vivo.
Diffusion is an important process for signal transduction.