Localization of Poc1b in Photoreceptor Cells
The retinal function of Poc1b was evaluated in zebrafish. Staining with anti-human POC1B showed that the protein was located at the basal bodies of both the inner and the outer photoreceptor layers of the adult zebrafish retina (Figure 4A). In a focal plane different from the basal bodies, some staining was also observed at the outer limit of the outer nuclear layer (data not shown). Poc1b immunostaining was also detected at the basal body of rat photoreceptors cells (Figure S3).