Green-shifting of SWS2A opsin sensitivity and loss of function of RH2-A opsin in flounders, genus Verasper.

ABSTRACT: We identified visual opsin genes for three flounder species, including the spotted halibut (Verasper variegatus), slime flounder (Microstomus achne), and Japanese flounder (Paralichthys olivaceus). Structure and function of opsins for the three species were characterized together with those of the barfin flounder (V. moseri) that we previously reported. All four flounder species possessed five basic opsin genes, including lws, sws1, sws2, rh1, and rh2. Specific features were observed in rh2 and sws2. The rh2-a, one of the three subtypes of rh2, was absent in the genome of V. variegatus and pseudogenized in V. moseri. Moreover, rh2-a mRNA was not detected in M. achne and

SUBMITTER: Kasagi S 

PROVIDER: S-EPMC5773313 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature