From: The opsins
Opsin
Chromosomal location
Number of introns
Rhodopsin
3q22.1
4
Blue opsin
7q32.1
Red opsin
Xq28
5
Green opsin
Encephalopsin
1q43
3
Melanopsin
10q23.2
9
Peropsin
4q25
6
RGR
10q23.1
Neuropsin
6p12.3