. Author manuscript; available in PMC: 2022 Mar 1.

Published in final edited form as: J Am Acad Dermatol. 2021 Feb 25;84(5):1219–1231. doi: 10.1016/j.jaad.2021.02.048

Table 2: Identified skin opsins.

Listed opsins, activation wavelengths, and identified expressed skin locations and cell types.

Opsin	Activation Wavelength (nm)	Skin Expression
OPN1-SW	420–425	Epidermis, melanocytes, keratinocytes, and fibroblasts
OPN1-MW	527–530	Epidermis
OPN1-LW	557–560	Epidermis
OPN2	500–505	Melanocytes, keratinocytes, fibroblasts, and hair follicle stem cells
OPN3	420–527	Melanocytes, keratinocytes, fibroblasts, and hair follicle stem cells
OPN4	480	Fibroblasts
OPN5	380	Melanocytes, keratinocytes, and fibroblasts
Peropsin	380–400	Keratinocytes

Abbreviations: OPN – opsin, nm – nanometer.