Takeshi Todo

Generation of medaka gene knockout models by target-selected mutagenesis (2006)

Taniguchi, Yoshihito, Takeda, Shunichi, Furutani-Seiki, Makoto, Kamei, Yasuhiro, Todo, Takeshi, Sasado, Takao, ...

Abstract We have established a reverse genetics approach for the routine generation of medaka ( Oryzias latipes ) gene knockouts. A cryopreserved library of N -ethyl- N -nitrosourea (ENU) mutagenized...

The cryptochromes (2005)

Lin, Chentao, Todo, Takeshi

Summary Cryptochromes are photoreceptors that regulate entrainment by light of the circadian clock in plants and animals. They also act as integral parts of the central circadian oscillator in animal...

Fine-structure mutational analysis of a stage- and tissue-specific promoter element of the Drosophila glue gene Sgs-3 (1990)

Todo, Takeshi, Roark, Margaret, Raghavan, K. Vijay, Mayeda, Carol, Meyerowitz, Elliot

The Sgs-3 gene of Drosophila melanogaster exhibits a tightly regulated pattern of expression governed by two functionally equivalent elements within 1 kb of the gene, each of which is sufficient to...

Differential regulation of mammalian Period genes and circadian rhythmicity by cryptochromes 1 and 2

Vitaterna, Martha Hotz, Selby, Christopher P., Todo, Takeshi, Niwa, Hitoshi, Thompson, Carol, Fruechte, Ethan M., ...

Cryptochromes regulate the circadian clock in animals and plants. Humans and mice have two cryptochrome (Cry) genes. A previous study showed that mice lacking the Cry2 gene had reduced sensitivity to...

Bacterial cryptochrome and photolyase: characterization of two photolyase-like genes of Synechocystis sp. PCC6803

Hitomi, Kenichi, Okamoto, Kazuhisa, Daiyasu, Hiromi, Miyashita, Hiroshi, Iwai, Shigenori, Toh, Hiroyuki, ...

Photolyase is a DNA repair enzyme that reverses UV-induced photoproducts in DNA in a light-dependent manner. Recently, photolyase homologs were identified in higher eukaryotes. These homologs, termed...

Photoactivation of the flavin cofactor in Xenopus laevis (6–4) photolyase: Observation of a transient tyrosyl radical by time-resolved electron paramagnetic resonance

Weber, Stefan, Kay, Christopher W. M., Mögling, Heike, Möbius, Klaus, Hitomi, Kenichi, Todo, Takeshi

The light-induced electron transfer reaction of flavin cofactor photoactivation in Xenopus laevis (6–4) photolyase has been studied by continuous-wave and time-resolved electron paramagnetic...

New role of zCRY and zPER2 as regulators of sub-cellular distributions of zCLOCK and zBMAL proteins

Hirayama, Jun, Fukuda, Itsuki, Ishikawa, Tomoko, Kobayashi, Yuri, Todo, Takeshi

The core oscillator that generates circadian rhythm in eukaryotes consists of transcription/translation-based autoregulatory feedback loops by which clock gene products negatively regulate their own...

Structures of defective P transposable elements prevalent in natural Q and Q-derived M strains of Drosophila melanogaster

Sakoyama, Yasuhiko, Todo, Takeshi, Ishiwa-Chigusa, Sadao, Honjo, Tasuku, Kondo, Sohei

Several DNA sequences with homology to the complete 2.9-kilobase (kb) P element from a P strain in the United States were isolated and characterized from two Drosophila melanogaster strains collected...

The cryptochromes

Lin, Chentao, Todo, Takeshi

Cryptochromes are photoreceptors that regulate entrainment of the circadian clock by light in plants and animals. They are related to DNA photolyases and have similar three-dimensional structures,...

Reduced α-adrenoceptor responsiveness and enhanced baroreflex sensitivity in Cry-deficient mice lacking a biological clock

Masuki, Shizue, Todo, Takeshi, Nakano, Yasushi, Okamura, Hitoshi, Nose, Hiroshi

To reveal the role of clock genes in generating the circadian rhythm of baroreflexes, we continuously measured mean arterial pressure and baroreflex sensitivity in free-moving normal wild-type mice,...

Chemical synthesis of oligodeoxyribonucleotides containing the Dewar valence isomer of the (6–4) photoproduct and their use in (6–4) photolyase studies

Yamamoto, Junpei, Hitomi, Kenichi, Todo, Takeshi, Iwai, Shigenori

The pyrimidine(6–4)pyrimidone photoproduct, a major UV lesion formed between adjacent pyrimidine bases, is transformed to its Dewar valence isomer upon exposure to UVA/UVB light. We have...

Differential regulation of mammalian Period genes and circadian rhythmicity by cryptochromes 1 and 2

Vitaterna, Martha Hotz, Selby, Christopher P., Todo, Takeshi, Niwa, Hitoshi, Thompson, Carol, Fruechte, Ethan M., ...

Cryptochromes regulate the circadian clock in animals and plants. Humans and mice have two cryptochrome (Cry) genes. A previous study showed that mice lacking the Cry2 gene had reduced sensitivity to...

Bacterial cryptochrome and photolyase: characterization of two photolyase-like genes of Synechocystis sp. PCC6803

Hitomi, Kenichi, Okamoto, Kazuhisa, Daiyasu, Hiromi, Miyashita, Hiroshi, Iwai, Shigenori, Toh, Hiroyuki, ...

Photolyase is a DNA repair enzyme that reverses UV-induced photoproducts in DNA in a light-dependent manner. Recently, photolyase homologs were identified in higher eukaryotes. These homologs, termed...

Photoactivation of the flavin cofactor in Xenopus laevis (6–4) photolyase: Observation of a transient tyrosyl radical by time-resolved electron paramagnetic resonance

Weber, Stefan, Kay, Christopher W. M., Mögling, Heike, Möbius, Klaus, Hitomi, Kenichi, Todo, Takeshi

The light-induced electron transfer reaction of flavin cofactor photoactivation in Xenopus laevis (6–4) photolyase has been studied by continuous-wave and time-resolved electron paramagnetic...

New role of zCRY and zPER2 as regulators of sub-cellular distributions of zCLOCK and zBMAL proteins

Hirayama, Jun, Fukuda, Itsuki, Ishikawa, Tomoko, Kobayashi, Yuri, Todo, Takeshi

The core oscillator that generates circadian rhythm in eukaryotes consists of transcription/translation-based autoregulatory feedback loops by which clock gene products negatively regulate their own...

Structures of defective P transposable elements prevalent in natural Q and Q-derived M strains of Drosophila melanogaster

Sakoyama, Yasuhiko, Todo, Takeshi, Ishiwa-Chigusa, Sadao, Honjo, Tasuku, Kondo, Sohei

Several DNA sequences with homology to the complete 2.9-kilobase (kb) P element from a P strain in the United States were isolated and characterized from two Drosophila melanogaster strains collected...

The cryptochromes

Lin, Chentao, Todo, Takeshi

Cryptochromes are photoreceptors that regulate entrainment of the circadian clock by light in plants and animals. They are related to DNA photolyases and have similar three-dimensional structures,...

Reduced α-adrenoceptor responsiveness and enhanced baroreflex sensitivity in Cry-deficient mice lacking a biological clock

Masuki, Shizue, Todo, Takeshi, Nakano, Yasushi, Okamura, Hitoshi, Nose, Hiroshi

To reveal the role of clock genes in generating the circadian rhythm of baroreflexes, we continuously measured mean arterial pressure and baroreflex sensitivity in free-moving normal wild-type mice,...

Chemical synthesis of oligodeoxyribonucleotides containing the Dewar valence isomer of the (6–4) photoproduct and their use in (6–4) photolyase studies

Yamamoto, Junpei, Hitomi, Kenichi, Todo, Takeshi, Iwai, Shigenori

The pyrimidine(6–4)pyrimidone photoproduct, a major UV lesion formed between adjacent pyrimidine bases, is transformed to its Dewar valence isomer upon exposure to UVA/UVB light. We have...

Generation of medaka gene knockout models by target-selected mutagenesis

Taniguchi, Yoshihito, Takeda, Shunichi, Furutani-Seiki, Makoto, Kamei, Yasuhiro, Todo, Takeshi, Sasado, Takao, ...

A reverse genetics approach for the routine generation of medaka (Oryzias latipes) gene knockouts is described and applied to create a cryopreserved resource containing knockouts for most medaka...