Retinaldehyde-binding protein 1 (RLBP1)

Soluble retinoid carrier essential the proper function of the rod and cone photoreceptors. Participates in the regeneration of active 11-cis-retinol and 11-cis-retinaldehyde, from the inactive 11-trans products of the rhodopsin photocycle and in the de novo synthesis of these retinoids from 11-trans metabolic precursors.

The cycling of retinoids between photoreceptor and adjacent pigment epithelium cells is known as the'visual cycle'. .