**3.6 Phototaxis**

The non-flagellated cyanobacteria adapt phototaxis in response to light. In *Synechocystis*, move towards light [37] and away from light [38] phototaxes are achieved by PixJ and UirS CBCRs. The CBCR- PixJ-GAF domain in *Synechococcus elongatus*, can respond to the direction of illumination by wavelengths that induce both progressive and refusal phototactic movements [39]. Other similar CBCR viz., SyPixJ [37], TePixJ [40], and AnPixJ [41] are commonly involved in phototaxis.
