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Featured researches published by Sanae A. Ishijima.


Proteins | 2009

Interactions between the archaeal transcription repressor FL11 and its coregulators lysine and arginine.

Mitsugu Yamada; Sanae A. Ishijima; Masashi Suzuki

Interactions between the archaeal transcription repressor FL11 and its coregulators lysine and arginine Mitsugu Yamada, Sanae A. Ishijima, and Masashi Suzuki* 1 Japan Science and Technology Agency, Core Research for Evolutional Science and Technology, Sanbancho 5, Chiyoda-ku, Tokyo 102-0075, Japan 2 National Institute of Advanced Industrial Science and Technology, Tsukuba Center 6-10, Higashi 1-1-1, Tsukuba 305-8566, Japan


Nucleic Acids Research | 2009

The DNA-recognition mode shared by archaeal feast/famine-regulatory proteins revealed by the DNA-binding specificities of TvFL3, FL10, FL11 and Ss-LrpB

Katsushi Yokoyama; Hideki Nogami; Mamiko Kabasawa; Sonomi Ebihara; Ai Shimowasa; Keiko Hashimoto; Tsuyoshi Kawashima; Sanae A. Ishijima; Masashi Suzuki

The DNA-binding mode of archaeal feast/famine-regulatory proteins (FFRPs), i.e. paralogs of the Esherichia coli leucine-responsive regulatory protein (Lrp), was studied. Using the method of systematic evolution of ligands by exponential enrichment (SELEX), optimal DNA duplexes for interacting with TvFL3, FL10, FL11 and Ss-LrpB were identified as TACGA[AAT/ATT]TCGTA, GTTCGA[AAT/ATT]TCGAAC, CCGAAA[AAT/ATT]TTTCGG and TTGCAA[AAT/ATT]TTGCAA, respectively, all fitting into the form abcdeWWWedcba. Here W is A or T, and e.g. a and a are bases complementary to each other. Apparent equilibrium binding constants of the FFRPs and various DNA duplexes were determined, thereby confirming the DNA-binding specificities of the FFRPs. It is likely that these FFRPs recognize DNA in essentially the same way, since their DNA-binding specificities were all explained by the same pattern of relationship between amino-acid positions and base positions to form chemical interactions. As predicted from this relationship, when Gly36 of TvFL3 was replaced by Thr, the b base in the optimal DNA duplex changed from A to T, and, when Thr36 of FL10 was replaced by Ser, the b base changed from T to G/A. DNA-binding characteristics of other archaeal FFRPs, Ptr1, Ptr2, Ss-Lrp and LysM, are also consistent with the relationship.


Fems Microbiology Reviews | 2006

Feast/famine regulatory proteins (FFRPs): Escherichia coli Lrp, AsnC and related archaeal transcription factors

Katsushi Yokoyama; Sanae A. Ishijima; Lester Clowney; Hideaki Koike; Hironori Aramaki; Chikako Tanaka; Kozo Makino; Masashi Suzuki


Proceedings of the National Academy of Sciences of the United States of America | 2004

The archaeal feast/famine regulatory protein: Potential roles of its assembly forms for regulating transcription

Hideaki Koike; Sanae A. Ishijima; Lester Clowney; Masashi Suzuki


Structure | 2007

Feast/Famine Regulation by Transcription Factor FL11 for the Survival of the Hyperthermophilic Archaeon Pyrococcus OT3.

Katsushi Yokoyama; Sanae A. Ishijima; Hideaki Koike; Chitose Kurihara; Ai Shimowasa; Mamiko Kabasawa; Tsuyoshi Kawashima; Masashi Suzuki


Biological & Pharmaceutical Bulletin | 2008

Transcription regulation by feast/famine regulatory proteins, FFRPs, in archaea and eubacteria.

Tsuyoshi Kawashima; Hironori Aramaki; Tomoya Oyamada; Kozo Makino; Mitsugu Yamada; Hideyasu Okamura; Katsushi Yokoyama; Sanae A. Ishijima; Masashi Suzuki


Proceedings of the Japan Academy. Series B Physical and biological sciences | 2003

An electron microscopic study of the archaeal feast/famine regulatory protein

Sanae A. Ishijima; Lester Clowney; Hideaki Koike; Masashi Suzuki


Proceedings of the Japan Academy. Series B Physical and biological sciences | 2004

An electron microscopic study of the archaeal feast/famine regulatory protein 6. The cylindrical assembly form

Sanae A. Ishijima; Lester Clowney; Masashi Suzuki


Proceedings of the Japan Academy. Series B Physical and biological sciences | 2004

An electron microscopic study of the archaeal feast/famine regulatory protein: 3. Labeling of the N-terminus using nickel

Sanae A. Ishijima; Lester Clowney; Hideaki Koike; Masashi Suzuki


Proceedings of the Japan Academy. Series B Physical and biological sciences | 2004

An electron microscopic study of the archaeal feast/famine regulatory protein 2. Crystal formation by a full length FFRP, pot0434017 (FL11)

Sanae A. Ishijima; Lester Clowney; Hideaki Koike; Masashi Suzuki

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Masashi Suzuki

National Institute of Advanced Industrial Science and Technology

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Lester Clowney

National Institute of Advanced Industrial Science and Technology

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Hideaki Koike

National Institute of Advanced Industrial Science and Technology

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Katsushi Yokoyama

National Institute of Advanced Industrial Science and Technology

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Tsuyoshi Kawashima

National Institute of Advanced Industrial Science and Technology

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Ai Shimowasa

National Institute of Advanced Industrial Science and Technology

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Hironori Aramaki

Daiichi University of Pharmacy

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Mamiko Kabasawa

National Institute of Advanced Industrial Science and Technology

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Mitsugu Yamada

National Institute of Advanced Industrial Science and Technology

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