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Rhodoligotrophos appendicifer gen. nov., sp. nov., an appendaged bacterium isolated from a freshwater Antarctic lake.
- W. Fukuda, K. Yamada, Y. Miyoshi, Hirokazu Okuno, H. Atomi, T. Imanaka
- Biology, Medicine
- International journal of systematic and…
- 1 August 2012
A Gram-stain-negative, non-spore-forming, non-motile, irregularly circular, aerobic/microaerobic appendaged bacterium (strain 120-1(T)) was isolated from Naga-ike, one of the freshwater lakes in the… Expand
Polymorphobacter multimanifer gen. nov., sp. nov., a polymorphic bacterium isolated from Antarctic white rock.
- W. Fukuda, Yohzo Chino, +5 authors T. Imanaka
- Biology, Medicine
- International journal of systematic and…
- 1 June 2014
A Gram-stain-negative, non-spore-forming, aerobic, oligotrophic bacterium (strain 262-7(T)) was isolated from a crack of white rock collected in the Skallen region of Antarctica. Strain 262-7(T) grew… Expand
Critical behavior of megabase-size DNA toward the transition into a compact state.
- Y. Yoshikawa, Y. Suzuki, +4 authors T. Imanaka
- Chemistry, Medicine
- The Journal of chemical physics
- 14 December 2011
We studied the changes in the higher-order structure of a megabase-size DNA (S120-1 DNA) under different spermidine (SPD) concentrations through single-molecule observations using fluorescence… Expand
Constrictibacter antarcticus gen. nov., sp. nov., a cryptoendolithic micro-organism from Antarctic white rock.
- K. Yamada, W. Fukuda, Yuka Kondo, Y. Miyoshi, H. Atomi, T. Imanaka
- Biology, Medicine
- International journal of systematic and…
- 1 August 2011
A Gram-negative, non-spore-forming, ovoid to rod-shaped aerobic or microaerobic bacterium, strain 262-8(T), was isolated from a cavity within white rock collected in Antarctica. Strain 262-8(T) grew… Expand
Lysobacter oligotrophicus sp. nov., isolated from an Antarctic freshwater lake in Antarctica.
- W. Fukuda, T. Kimura, S. Araki, Y. Miyoshi, H. Atomi, T. Imanaka
- Biology, Medicine
- International journal of systematic and…
- 1 September 2013
A Gram-stain-negative, non-spore-forming, rod-shaped, aerobic bacterium (strain 107-E2(T)) was isolated from freshwater samples containing microbial mats collected at a lake in Skarvsnes, Antarctica… Expand
Naturally occurring branched-chain polyamines induce a crosslinked meshwork structure in a giant DNA.
- Akira Muramatsu, Y. Shimizu, +7 authors K. Yoshikawa
- Chemistry, Medicine
- The Journal of chemical physics
- 19 December 2016
We studied the effect of branched-chain polyamines on the folding transition of genome-sized DNA molecules in aqueous solution by the use of single-molecule observation with fluorescence microcopy.… Expand
Opposite effect of polyamines on In vitro gene expression: Enhancement at low concentrations but inhibition at high concentrations
- Ai Kanemura, Y. Yoshikawa, W. Fukuda, K. Tsumoto, T. Kenmotsu, K. Yoshikawa
- Chemistry, Medicine
- PloS one
- 1 March 2018
Background Polyamines have various biological functions including marked effects on the structure and function of genomic DNA molecules. Changes in the higher-order structure of DNA caused by… Expand
Specific Conformational Change in Giant DNA Caused by Anticancer Tetrazolato-Bridged Dinuclear Platinum(II) Complexes: Middle-Length Alkyl Substituents Exhibit Minimum Effect.
- S. Komeda, Hiroki Yoneyama, +11 authors K. Yoshikawa
- Chemistry, Medicine
- Inorganic chemistry
- 3 January 2017
Derivatives of the highly antitumor-active compound [{cis-Pt(NH3)2}2(μ-OH)(μ-tetrazolato-N2,N3)]2+ (5-H-Y), which is a tetrazolato-bridged dinuclear platinum(II) complex, were prepared by… Expand
Mutation design of a thermophilic Rubisco based on three‐dimensional structure enhances its activity at ambient temperature
- M. Fujihashi, Y. Nishitani, +8 authors K. Miki
- Biology, Medicine
- Proteins
- 1 October 2016
Ribulose‐1,5‐bisphosphate carboxylase/oxygenase (Rubisco) plays a central role in carbon dioxide fixation on our planet. Rubisco from a hyperthermophilic archaeon Thermococcus kodakarensis… Expand
Identification of Branched-Chain Polyamines in Hyperthermophiles.
- Ryota Hidese, W. Fukuda, M. Niitsu, S. Fujiwara
- Chemistry, Medicine
- Methods in molecular biology
- 2018
Thermophiles are organisms that grow optimally at temperatures higher than 55 °C. They contain two types of unusual longer/branched-chain polyamines in addition to common polyamines such as… Expand