Hiroo Imai

Divergent Selection on Opsins Drives Incipient Speciation in Lake Victoria Cichlids (2006)

Yohey Terai, Ole Seehausen, Takeshi Sasaki, Kazuhiko Takahashi, Shinji Mizoiri, Tohru Sugawara, ...

Divergent natural selection acting on ecological traits, which also affect mate choice, is a key element of ecological speciation theory, but has not previously been demonstrated at the molecular...

Generation of knock-in mice carrying third cones with spectral sensitivity different from S and L cones (2005)

Onishi, Akishi, Hasegawa, Jun, Imai, Hiroo, Chisaka, Osamu, Ueda, Yoshiki, Honda, Yoshihito, ...

Red-green color vision in primates is unique in the sense that it is mediated by two photoreceptor cells that are indistinguishable in all aspects except for their visual pigments. In order to...

Constraints of Opsin Structure on the Ligand-binding Site: Studies with Ring-fused Retinals¶ (2002)

Takahiro Hirano, In Taek Lim, Don Moon Kim, Xiang-Guo Zheng, Kazuo Yoshihara, Yoshiaki Oyama, ...

Ring-fused retinal analogs were designed to examine the hula-twist mode of the photoisomerization of the 9-cis retinylidene chromophore. Two 9-cis retinal analogs, the C11–C13 five-membered...

Single amino acid residue as a functional determinant of rod and cone visual pigments

Imai, Hiroo, Kojima, Daisuke, Oura, Tomonori, Tachibanaki, Shuji, Terakita, Akihisa, Shichida, Yoshinori

The visual transduction processes in rod and cone photoreceptor cells begin with photon absorption by the different types of visual pigments. Cone visual pigments exhibit faster regeneration from...

Parallelism of amino acid changes at the RH1 affecting spectral sensitivity among deep-water cichlids from Lakes Tanganyika and Malawi

Sugawara, Tohru, Terai, Yohey, Imai, Hiroo, Turner, George F., Koblmüller, Stephan, Sturmbauer, Christian, ...

Many examples of the appearance of similar traits in different lineages are known during the evolution of organisms. However, the underlying genetic mechanisms have been elucidated in very few cases....

Single amino acid residue as a functional determinant of rod and cone visual pigments

Imai, Hiroo, Kojima, Daisuke, Oura, Tomonori, Tachibanaki, Shuji, Terakita, Akihisa, Shichida, Yoshinori

The visual transduction processes in rod and cone photoreceptor cells begin with photon absorption by the different types of visual pigments. Cone visual pigments exhibit faster regeneration from...

Parallelism of amino acid changes at the RH1 affecting spectral sensitivity among deep-water cichlids from Lakes Tanganyika and Malawi

Sugawara, Tohru, Terai, Yohey, Imai, Hiroo, Turner, George F., Koblmüller, Stephan, Sturmbauer, Christian, ...

Many examples of the appearance of similar traits in different lineages are known during the evolution of organisms. However, the underlying genetic mechanisms have been elucidated in very few cases....

Divergent Selection on Opsins Drives Incipient Speciation in Lake Victoria Cichlids

Terai, Yohey, Seehausen, Ole, Sasaki, Takeshi, Takahashi, Kazuhiko, Mizoiri, Shinji, Sugawara, Tohru, ...

Divergent natural selection acting on ecological traits, which also affect mate choice, is a key element of ecological speciation theory, but has not previously been demonstrated at the molecular...

Physiological Properties of Rod Photoreceptor Cells in Green-sensitive Cone Pigment Knock-in Mice

Sakurai, Keisuke, Onishi, Akishi, Imai, Hiroo, Chisaka, Osamu, Ueda, Yoshiki, Usukura, Jiro, ...

Rod and cone photoreceptor cells that are responsible for scotopic and photopic vision, respectively, exhibit photoresponses different from each other and contain similar phototransduction proteins...