Toshio Inoda, Fumitada Tajima, Hiroshi Taniguchi, Motoyuki Saeki, Kazuki Numakura, Masami Hasegawa, ...
The effects of temperature on the mating behavior, gonad development, germ cell maturation, and egg spawning of the predaceous diving beetle Dytiscus sharpi (Coleoptera; Dytiscidae), were...
Rooting the eutherian tree: the power and pitfalls of phylogenomics (2007)
Nishihara, Hidenori, Okada, Norihiro, Hasegawa, Masami
Abstract Background Ongoing genome sequencing projects have led to a phylogenetic approach based on genome-scale data (phylogenomics), which is beginning to shed light on longstanding unresolved...
Detecting Excess Radical Replacements in Phylogenetic Trees (2003)
Tal Pupko, Roded Sharan, Masami Hasegawa, Ron Shamir, Dan Graur
There are a few instances in which positive Darwinian selection has been convincingly demonstrated at the molecular level. In this study, we present a novel test for detecting excess of radical...
Combining Multiple Datasets in a Likelihood Analysis: Which Models are Best? (2002)
Tal Pupko, Dorothe Huchon, Ying Cao, Norihiro Okada, Masami Hasegawa
Until recently, phylogenetic analyses have been routinely based on homologous sequences of a single gene. Given the vast number of gene sequences now available, phylogenetic studies are now based on...
Tal Pupko, Masami Hasegawa, Dan Graur, Nir Friedman
Motivation: We developed an algorithm to reconstruct ancestral sequences, taking into account the rate variation among sites of the protein sequences. Our algorithm maximizes the joint probability of...
NOBUKO ARISUE, TETSUO HASHIMOTO, JENNIFER A. LEE, DOROTHY V. MOORE, PAUL GORDON, CHRISTOPH W. SENSEN, ...
The taxonomic position and phylogenetic relationships of the Pelobionta, an amitochondriate amoeboflagellate group, are not yet completely settled. To provide more information, we obtained sequences...
NOBUKO ARISUE, TETSUO HASHIMOTO, HISAO YOSHIKAWA, YOSHIHIRO NAKAMURA, GEN NAKAMURA, FUMINORI NAKAMURA, ...
Blastocystis hominis, a parasite of the human intestine, has recently been positioned within stramenopiles by the small subunit rRNA phylogeny. To further confirm its phylogenetic position using...
Specification of a manufacturing system using Ada / (1982)
Thesis (M.S.)--University of California, Los Angeles, 1982.
Depopulation : recent trends in rural-urban migration in Japan / (1978)
Thesis (M.A.)--University of Washington.
Hashimoto, Tetsuo, Sánchez, Lidya B., Shirakura, Tetsurou, Müller, Miklós, Hasegawa, Masami
Nuclear-coded valyl-tRNA synthetase (ValRS) of eukaryotes is regarded of mitochondrial origin. Complete ValRS sequences obtained by us from two amitochondriate protists, the diplomonad, Giardia...
Nikaido, Masato, Matsuno, Fumio, Hamilton, Healy, Brownell, Robert L., Cao, Ying, Ding, Wang, ...
SINE (short interspersed element) insertion analysis elucidates contentious aspects in the phylogeny of toothed whales and dolphins (Odontoceti), especially river dolphins. Here, we characterize 25...
Martin, William, Rujan, Tamas, Richly, Erik, Hansen, Andrea, Cornelsen, Sabine, Lins, Thomas, ...
Chloroplasts were once free-living cyanobacteria that became endosymbionts, but the genomes of contemporary plastids encode only ≈5–10% as many genes as those of their free-living cousins,...
Komiya, Hiroyuki, Hasegawa, Masami, Takemura, Shosuke
The nucleotide sequences of 5S rRNAs from sponge Halichondria japonica and tunicate Halocynthia roretzi were determined by chemical and enzymatic gel methods. Their phylogenetic positions among...
Estimation of effective population size of HIV-1 within a host: a pseudomaximum-likelihood approach.
Seo, Tae-Kun, Thorne, Jeffrey L, Hasegawa, Masami, Kishino, Hirohisa
Using pseudomaximum-likelihood approaches to phylogenetic inference and coalescent theory, we develop a computationally tractable method of estimating effective population size from serially sampled...
Hashimoto, Tetsuo, Sánchez, Lidya B., Shirakura, Tetsurou, Müller, Miklós, Hasegawa, Masami
Nuclear-coded valyl-tRNA synthetase (ValRS) of eukaryotes is regarded of mitochondrial origin. Complete ValRS sequences obtained by us from two amitochondriate protists, the diplomonad, Giardia...
Nikaido, Masato, Matsuno, Fumio, Hamilton, Healy, Brownell, Robert L., Cao, Ying, Ding, Wang, ...
SINE (short interspersed element) insertion analysis elucidates contentious aspects in the phylogeny of toothed whales and dolphins (Odontoceti), especially river dolphins. Here, we characterize 25...
Martin, William, Rujan, Tamas, Richly, Erik, Hansen, Andrea, Cornelsen, Sabine, Lins, Thomas, ...
Chloroplasts were once free-living cyanobacteria that became endosymbionts, but the genomes of contemporary plastids encode only ≈5–10% as many genes as those of their free-living cousins,...
Komiya, Hiroyuki, Hasegawa, Masami, Takemura, Shosuke
The nucleotide sequences of 5S rRNAs from sponge Halichondria japonica and tunicate Halocynthia roretzi were determined by chemical and enzymatic gel methods. Their phylogenetic positions among...
Estimation of effective population size of HIV-1 within a host: a pseudomaximum-likelihood approach.
Seo, Tae-Kun, Thorne, Jeffrey L, Hasegawa, Masami, Kishino, Hirohisa
Using pseudomaximum-likelihood approaches to phylogenetic inference and coalescent theory, we develop a computationally tractable method of estimating effective population size from serially sampled...
Pegasoferae, an unexpected mammalian clade revealed by tracking ancient retroposon insertions
Nishihara, Hidenori, Hasegawa, Masami, Okada, Norihiro
Despite the recent large-scale efforts dedicated to comprehensive phylogenetic analyses using mitochondrial and nuclear DNA sequences, several relationships among mammalian orders remain...
Rooting the eutherian tree: the power and pitfalls of phylogenomics
Nishihara, Hidenori, Okada, Norihiro, Hasegawa, Masami
In an attempt to root the eutherian tree using genome-scale data with the maximum likelihood method, a concatenate analysis supports a putatively wrong tree, whereas separate analyses of different...