... of opsin expression in Limulus eyes is much more complex than previously thought and extend our previous observations of opsin co-expression in visible light-sensitive Limulus photoreceptors. We also characterize a Limulus peropsin/RGR (LpPerOps1). We examine the phylogenetic relationship of LpPerOps1...

... the night, whereas LpUVOps1 levels show no diurnal change. These and previous findings show that opsin co-expression and the differential regulation of co-expressed opsins in rhabdoms is a common feature of L. polyphemus photoreceptors. * Author for correspondence ( [email protected]...

... for correspondence ( [email protected] ) 15 4 2010 © 2010. 2010 opsin opsin co-expression Limulus photoreceptor circadian rhythm A long-standing concept in vision science has held that a single photoreceptor expresses a single type of opsin, the protein component of visual...