Akio Sugino

The DNA polymerase activity of Pol epsilon holoenzyme is required for rapid and efficient chromosomal DNA replication in Xenopus egg extracts (2006)

Shikata, Koh, Sasa-Masuda, Taro, Okuno, Yukiko, Waga, Shou, Sugino, Akio

Background: DNA polymerase epsilon (Pol epsilon) is involved in DNA replication, repair, and cell-cycle checkpoint control in eukaryotic cells. Although the roles of replicative Pol alpha and Pol...

The DNA polymerase activity of Pol ε holoenzyme is required for rapid and efficient chromosomal DNA replication in Xenopusegg extracts (2006)

Shikata, Koh, Sasa-Masuda, Taro, Okuno, Yukiko, Waga, Shou, Sugino, Akio

Abstract Background DNA polymerase ε (Pol ε) is involved in DNA replication, repair, and cell-cycle checkpoint control in eukaryotic cells. Although the roles of replicative Pol α and Pol δ in...

Identification and Characterization of a Xenopus Homolog of Dbf4, a Regulatory Subunit of the Cdc7 Protein Kinase Required for the Initiation of DNA Replication (2003)

Furukohri, Asako, Sato, Noriko, Masai, Hisao, Arai, Ken-ichi, Sugino, Akio, Waga, Shou

Dbf4 is a regulatory subunit for the Cdc7 protein kinase that is required for the initiation of eukaryotic DNA replication, but the precise roles of Dbf4-Cdc7 remain to be determined. Here we...

Structure and function of the fourth subunit (Dpb4p) of DNA polymerase {varepsilon} in Saccharomyces cerevisiae (2000)

Ohya, Tomoko, Maki, Satoko, Kawasaki, Yasuo, Sugino, Akio

DNA polymerase ϵ (Polϵ) of Saccharomyces cerevisiae is purified as a complex of four polypeptides with molecular masses of >250, 80, 34 (and 31) and 29 kDa as determined by SDS–PAGE....

DNA Helicase III of Saccharomyces cerevisiae, Encoded by YER176w (HEL1), Highly Unwinds Covalently Closed, Circular DNA in the Presence of a DNA Topoisomerase and yRF-A (1999)

Kamimura, Yo-Ichiro, Kawasaki, Yasuo, Ohara, Takeshi, Sugino, Akio

Previously, we have purified and characterized DNA helicase III from the yeast Saccharomyces cerevisiae [Shimizu, K. and Sugino, A. (1993) J. BioL Chem. 268,9578–9584]. Here, we have further...

The RFC2 gene encoding a subunit of replication factor C of Saccharomyces cerevisiae (1994)

Noskov, Vladimir, Maki, Satoko, Kawasaki, Yasuo, Leem, Sun-Hee, Ono, Bun-Ichiro, Araki, Hiroyuki, ...

Replication Factor C (RF-C) of Saccharomyces cerevisiae is a complex that consists of several different polypeptides ranging from 120- to 37 kDa (Yoder and Burgers, 1991; Fien and Stillman, 1992),...

The yeast Saccharomyces cerevisiae DNA polymerase IV: possible involvement in double strand break DNA repair (1994)

Leem, Sun-Hee, Ropp, Philip A., Sugino, Akio

We identified and purified a new DNA polymerase (DNA polymerase IV), which is similar to mammalian DNA polymerase (3, from Saccharomyces cerevisiae and suggested that it is encoded by YCR14C (POLX)...

Cloning DPB3, the gene encoding the third subunit of DNA polymerase II of Saccharomyces cerevisiae (1991)

Araki, Hiroyuki, Hamatake, Robert K., Morrison, Alan, Johnson, Anthony L., Johnston, Leland H., Sugino, Akio

DNA polymerase II purified from Saccharomyces cerevisiae contains polypeptldes with apparent molecular masses of >200, 80, 34, 30 and 29 kDa, the two largest of which (subunlts A and B) are encoded...

Use of a cloned double stranded cDNA coding for a major androgen dependent protein in rat seminal vesicle secretion: the effect of testosterone in gene expression (1981)

Mansson, Per-Erik, Sugino, Akio, Harris, Stephen E.

The abundant class of poly(A$)RNA [poly(A$)RNAllS] from rat seminal vesicle was used to synthesize ds-cDNAllS. The ds-cDNAllS was inserted and cloned into the Pst I site of pBR-322 using E. coil RR1...

DNA gyrase subunit stoichiometry and the covalent attachment of subunit A to DNA during DNA cleavage (1980)

Sugino, Akio, Higgins, N.Patrick, Cozzarelli, Nicholas R.

Escherichia coli DNA gyrase contains a 1:1 ratio of protomers coded by the genes gyrA and gyrB. This along with previous results shows that the enzyme has two copies of each protomer and thus a...

Bacteriophage T4 RNA ligase: preparation of a physically homogeneous, nuclease-free enzyme from hyperproducing infected cells (1977)

Higgins, N. Patrick, Geballe, Adam P., Snopek, Thomas J., Sugino, Akio, Cozzarelli, Nicholas R.

Infection of Escherichia coli by a bacteriophage T4 regA, gene 44 double mutant leads to about a 7-fold increase in the amount of RNA ligase obtained after infection by wild-type phage. Using cells...

DNA polymerase ɛ is required for coordinated and efficient chromosomal DNA replication in Xenopus egg extracts

Waga, Shou, Masuda, Taro, Takisawa, Haruhiko, Sugino, Akio

DNA polymerase ɛ (Polɛ) is thought to be involved in DNA replication, repair, and cell-cycle checkpoint control in eukaryotic cells. Although the requirement of other replicative DNA polymerases,...

Dpb11 Controls the Association between DNA Polymerases α and ɛ and the Autonomously Replicating Sequence Region of Budding Yeast

Masumoto, Hiroshi, Sugino, Akio, Araki, Hiroyuki

Dpb11 is required for chromosomal DNA replication and the S-phase checkpoint in Saccharomyces cerevisiae. Here, we report detection of a physical complex containing Dpb11 and DNA polymerase ɛ...

The RFC2 Gene, Encoding the Third-Largest Subunit of the Replication Factor C Complex, Is Required for an S-Phase Checkpoint in Saccharomyces cerevisiae

Noskov, Vladimir N., Araki, Hiroyuki, Sugino, Akio

Replication factor C (RF-C), an auxiliary factor for DNA polymerases δ and ɛ, is a multiprotein complex consisting of five different polypeptides. It recognizes a primer on a template DNA, binds to...

Sld2, Which Interacts with Dpb11 in Saccharomyces cerevisiae, Is Required for Chromosomal DNA Replication

Kamimura, Yoichiro, Masumoto, Hiroshi, Sugino, Akio, Araki, Hiroyuki

The DPB11 gene, which genetically interacts with DNA polymerase II (ɛ), one of three replicative DNA polymerases, is required for DNA replication and the S phase checkpoint in Saccharomyces...

Structure and function of the fourth subunit (Dpb4p) of DNA polymerase ɛ in Saccharomyces cerevisiae

Ohya, Tomoko, Maki, Satoko, Kawasaki, Yasuo, Sugino, Akio

DNA polymerase ɛ (Polɛ) of Saccharomyces cerevisiae is purified as a complex of four polypeptides with molecular masses of >250, 80, 34 (and 31) and 29 kDa as determined by SDS–PAGE. The genes...

The fifth essential DNA polymerase φ in Saccharomyces cerevisiae is localized to the nucleolus and plays an important role in synthesis of rRNA

Shimizu, Kikuo, Kawasaki, Yasuo, Hiraga, Shin-Ichiro, Tawaramoto, Maki, Nakashima, Naomi, Sugino, Akio

We report that POL5 encodes the fifth essential DNA polymerase in Saccharomyces cerevisiae. Pol5p was identified and purified from yeast cell extracts and is an aphidicolin-sensitive DNA polymerase...

Sld3, which interacts with Cdc45 (Sld4), functions for chromosomal DNA replication in Saccharomyces cerevisiae

Kamimura, Yoichiro, Tak, Yon-Soo, Sugino, Akio, Araki, Hiroyuki

Cdc45, which binds to the minichromosomal maintenance (Mcm) proteins, has a pivotal role in the initiation and elongation steps of chromosomal DNA replication in eukaryotes. Here we show that...

GINS, a novel multiprotein complex required for chromosomal DNA replication in budding yeast

Takayama, Yuko, Kamimura, Yoichiro, Okawa, Mariko, Muramatsu, Sachiko, Sugino, Akio, Araki, Hiroyuki

Eukaryotic chromosomal DNA replication requires a two-step assembly of replication proteins on origins; formation of the prereplicative complex (pre-RC) in late M and G1 phases of the cell cycle, and...

Mcm2 is a target of regulation by Cdc7–Dbf4 during the initiation of DNA synthesis

Lei, Ming, Kawasaki, Yasuo, Young, Michael R., Kihara, Makoto, Sugino, Akio, Tye, Bik K.

The initiation of DNA synthesis is an important cell cycle event that defines the beginning of S phase. This critical event involves the participation of proteins whose functions are regulated by...

Energy coupling in DNA gyrase and the mechanism of action of novobiocin

Sugino, Akio, Higgins, N. Patrick, Brown, Patrick O., Peebles, Craig L., Cozzarelli, Nicholas R.

Escherichia coli DNA gyrase catalyzes negative supercoiling of closed duplex DNA at the expense of ATP. Two additional activities of the enzyme that have illuminated the energy coupling component of...

Slow Joining of Newly Replicated DNA Chains in DNA Polymerase I-Deficient Escherichia coli Mutants*

Okazaki, Reiji, Arisawa, Mikio, Sugino, Akio

In Escherichia coli mutants deficient in DNA polymerase I, newly replicated short DNA is joined at about 10% of the rate in the wild-type strains. It is postulated that DNA polymerase I normally...

Purification of subunits of Escherichia coli DNA gyrase and reconstitution of enzymatic activity

Higgins, N. Patrick, Peebles, Craig L., Sugino, Akio, Cozzarelli, Nicholas R.

Extensively purified DNA gyrase from Escherichia coli is inhibited by nalidixic acid and by novobiocin. The enzyme is composed of two subunits, A and B, which were purified as separate components....

RNA-Linked Nascent DNA Fragments in Escherichia coli*

Sugino, Akio, Hirose, Susumu, Okazaki, Reiji

Nucleic acid that is extracted from E. coli labeled by a brief pulse of [3H]dT and depatured by treatment with heat, formamide, or formaldehyde bands in a region with a density higher than that of...

Mechanism of action of nalidixic acid: Purification of Escherichia coli nalA gene product and its relationship to DNA gyrase and a novel nicking-closing enzyme

Sugino, Akio, Peebles, Craig L., Kreuzer, Kenneth N., Cozzarelli, Nicholas R.

A target protein for nalidixic and oxolinic acids in Escherichia coli, the nalA gene product (Pnal), was purified to homogeneity as judged by gel electrophoresis, using an in vitro complementation...

RNA-Linked DNA Fragments In Vitro*

Sugino, Akio, Okazaki, Reiji

RNA-linked DNA fragments are intermediates in DNA replication in Escherichia coli cells made permeable to nucleoside triphosphates by treatment with toluene. Covalent linkage of a short RNA stretch...

DNA polymerase ɛ is required for coordinated and efficient chromosomal DNA replication in Xenopus egg extracts

Waga, Shou, Masuda, Taro, Takisawa, Haruhiko, Sugino, Akio

DNA polymerase ɛ (Polɛ) is thought to be involved in DNA replication, repair, and cell-cycle checkpoint control in eukaryotic cells. Although the requirement of other replicative DNA polymerases,...

Dpb11 Controls the Association between DNA Polymerases α and ɛ and the Autonomously Replicating Sequence Region of Budding Yeast

Masumoto, Hiroshi, Sugino, Akio, Araki, Hiroyuki

Dpb11 is required for chromosomal DNA replication and the S-phase checkpoint in Saccharomyces cerevisiae. Here, we report detection of a physical complex containing Dpb11 and DNA polymerase ɛ...

The RFC2 Gene, Encoding the Third-Largest Subunit of the Replication Factor C Complex, Is Required for an S-Phase Checkpoint in Saccharomyces cerevisiae

Noskov, Vladimir N., Araki, Hiroyuki, Sugino, Akio

Replication factor C (RF-C), an auxiliary factor for DNA polymerases δ and ɛ, is a multiprotein complex consisting of five different polypeptides. It recognizes a primer on a template DNA, binds to...

Sld2, Which Interacts with Dpb11 in Saccharomyces cerevisiae, Is Required for Chromosomal DNA Replication

Kamimura, Yoichiro, Masumoto, Hiroshi, Sugino, Akio, Araki, Hiroyuki

The DPB11 gene, which genetically interacts with DNA polymerase II (ɛ), one of three replicative DNA polymerases, is required for DNA replication and the S phase checkpoint in Saccharomyces...

Structure and function of the fourth subunit (Dpb4p) of DNA polymerase ɛ in Saccharomyces cerevisiae

Ohya, Tomoko, Maki, Satoko, Kawasaki, Yasuo, Sugino, Akio

DNA polymerase ɛ (Polɛ) of Saccharomyces cerevisiae is purified as a complex of four polypeptides with molecular masses of >250, 80, 34 (and 31) and 29 kDa as determined by SDS–PAGE. The genes...

The fifth essential DNA polymerase φ in Saccharomyces cerevisiae is localized to the nucleolus and plays an important role in synthesis of rRNA

Shimizu, Kikuo, Kawasaki, Yasuo, Hiraga, Shin-Ichiro, Tawaramoto, Maki, Nakashima, Naomi, Sugino, Akio

We report that POL5 encodes the fifth essential DNA polymerase in Saccharomyces cerevisiae. Pol5p was identified and purified from yeast cell extracts and is an aphidicolin-sensitive DNA polymerase...

Sld3, which interacts with Cdc45 (Sld4), functions for chromosomal DNA replication in Saccharomyces cerevisiae

Kamimura, Yoichiro, Tak, Yon-Soo, Sugino, Akio, Araki, Hiroyuki

Cdc45, which binds to the minichromosomal maintenance (Mcm) proteins, has a pivotal role in the initiation and elongation steps of chromosomal DNA replication in eukaryotes. Here we show that...

GINS, a novel multiprotein complex required for chromosomal DNA replication in budding yeast

Takayama, Yuko, Kamimura, Yoichiro, Okawa, Mariko, Muramatsu, Sachiko, Sugino, Akio, Araki, Hiroyuki

Eukaryotic chromosomal DNA replication requires a two-step assembly of replication proteins on origins; formation of the prereplicative complex (pre-RC) in late M and G1 phases of the cell cycle, and...

Mcm2 is a target of regulation by Cdc7–Dbf4 during the initiation of DNA synthesis

Lei, Ming, Kawasaki, Yasuo, Young, Michael R., Kihara, Makoto, Sugino, Akio, Tye, Bik K.

The initiation of DNA synthesis is an important cell cycle event that defines the beginning of S phase. This critical event involves the participation of proteins whose functions are regulated by...

Energy coupling in DNA gyrase and the mechanism of action of novobiocin

Sugino, Akio, Higgins, N. Patrick, Brown, Patrick O., Peebles, Craig L., Cozzarelli, Nicholas R.

Escherichia coli DNA gyrase catalyzes negative supercoiling of closed duplex DNA at the expense of ATP. Two additional activities of the enzyme that have illuminated the energy coupling component of...

Slow Joining of Newly Replicated DNA Chains in DNA Polymerase I-Deficient Escherichia coli Mutants*

Okazaki, Reiji, Arisawa, Mikio, Sugino, Akio

In Escherichia coli mutants deficient in DNA polymerase I, newly replicated short DNA is joined at about 10% of the rate in the wild-type strains. It is postulated that DNA polymerase I normally...

Purification of subunits of Escherichia coli DNA gyrase and reconstitution of enzymatic activity

Higgins, N. Patrick, Peebles, Craig L., Sugino, Akio, Cozzarelli, Nicholas R.

Extensively purified DNA gyrase from Escherichia coli is inhibited by nalidixic acid and by novobiocin. The enzyme is composed of two subunits, A and B, which were purified as separate components....

RNA-Linked Nascent DNA Fragments in Escherichia coli*

Sugino, Akio, Hirose, Susumu, Okazaki, Reiji

Nucleic acid that is extracted from E. coli labeled by a brief pulse of [3H]dT and depatured by treatment with heat, formamide, or formaldehyde bands in a region with a density higher than that of...

Mechanism of action of nalidixic acid: Purification of Escherichia coli nalA gene product and its relationship to DNA gyrase and a novel nicking-closing enzyme

Sugino, Akio, Peebles, Craig L., Kreuzer, Kenneth N., Cozzarelli, Nicholas R.

A target protein for nalidixic and oxolinic acids in Escherichia coli, the nalA gene product (Pnal), was purified to homogeneity as judged by gel electrophoresis, using an in vitro complementation...

RNA-Linked DNA Fragments In Vitro*

Sugino, Akio, Okazaki, Reiji

RNA-linked DNA fragments are intermediates in DNA replication in Escherichia coli cells made permeable to nucleoside triphosphates by treatment with toluene. Covalent linkage of a short RNA stretch...