Satoru Kato
Kwansei Gakuin University
BiophysicsChemistryBilayerStratum corneumCell biology
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Publications 67
#1Wakao Fukuda (Kwansei Gakuin University)H-Index: 13
#2Yuka Yamori (Kwansei Gakuin University)H-Index: 1
Last. Shinsuke Fujiwara (Kwansei Gakuin University)H-Index: 30
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Branched-chain polyamine (BCPA) synthase (BpsA), encoded by the bpsA gene, is responsible for the biosynthesis of BCPA in the hyperthermophilic archaeon Thermococcus kodakarensis, which produces N4-bis(aminopropyl)spermidine and spermidine. Here, next-generation DNA sequencing and liquid chromatography–mass spectrometry (LC–MS) were used to perform transcriptomic and proteomic analyses of a T. kodakarensis strain (DBP1) lacking bpsA. Subsequently, the contributions of BCPA to gene transcription ...
2 CitationsSource
#1Hiromitsu NakazawaH-Index: 4
#2Tomohiro ImaiH-Index: 2
Last. Satoru KatoH-Index: 9
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Stratum corneum (SC), the outermost layer of human skin, acts as an intelligent physicochemical interface between the inside and the outside of our body. To make clear the relationship between structure and physical barrier properties of SC, we developed a method that enables us to simultaneously acquire X-ray diffraction (XD) patterns and transepidermal water loss (TEWL) values using a spread SC sheet isolated from human skin. The synchrotron X-ray was incident on the SC sheet surface at an ang...
#1Masafumi HamakawaH-Index: 1
#2Ryota HideseH-Index: 8
Last. Shinsuke FujiwaraH-Index: 6
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#1Yasuharu NakagawaH-Index: 2
#2Hiromitsu NakazawaH-Index: 4
Last. Satoru KatoH-Index: 9
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We investigated the effect of dielectric properties of the aqueous medium on the novel type of hydrogel composed of a crude lecithin mixture (PC70) and hexadecanol (HD), in which charged sheet-like bilayers are kept far apart due to interbilayer repulsive interaction. We used dipropylene glycol (DPG) as a modifier of the dielectric properties and examined its effect on the hydrogel by synchrotron X-ray diffraction, differential scanning calorimetry (DSC), polarized optical microscopy, and freeze...
1 CitationsSource
The surface pressure–area (π–A) isotherms of DMPC, DPPC, and DSPC/cholesterol binary monolayers were systematically measured with great care to gain insight into the lateral molecular packing in these binary monolayer systems. The average molecular area A and the area elastic modulus Cs–1 at a given surface pressure were calculated as a function of cholesterol mole fraction xchol. As a result, data reliable enough for the analysis of detailed phase behavior were obtained. We identified several c...
14 CitationsSource
#1Satoru Kato (Kwansei Gakuin University)H-Index: 9
#2Hiromitsu Nakazawa (Kwansei Gakuin University)H-Index: 4
#1Tsubasa Miyoshi (Kwansei Gakuin University)H-Index: 2
#2Max Lönnfors (Åbo Akademi University)H-Index: 8
Last. Satoru Kato (Kwansei Gakuin University)H-Index: 9
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Abstract We examined the volumetric behavior of the dipalmitoylphosphatidylcholine (DPPC)/cholesterol binary bilayer system with high accuracy and more cholesterol concentrations to reveal the detailed molecular states in the liquid-disordered (Ld) phase, the liquid-ordered (Lo) phase and the gel phase. We measured the average specific volume of the binary bilayer at several temperatures by the neutral flotation method and calculated the average volume per molecule to estimate the partial molecu...
8 CitationsSource
#1Ryota Hidese (Kwansei Gakuin University)H-Index: 8
#2Ryo Nishikawa (Kwansei Gakuin University)H-Index: 1
Last. Shinsuke Fujiwara (Kwansei Gakuin University)H-Index: 30
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Two genes, TK1280 and TK2287, encode orthologous transcription factor B proteins (TFB1 and TFB2, respectively) in the hyperthermophilic archaeon Thermococcus kodakarensis. The functional difference between their TFBs remains unknown. While TFB1 and TFB2 displayed equivalent thermostability, mRNA levels of tfb1 at 93 °C were eightfold higher than those at 60 or 85 °C, and were 4- to 10-fold greater than those of tfb2 at all temperatures. This suggests that TFB1 is the abundant TFB in T. kodakaren...
8 CitationsSource
#1Yasuharu NakagawaH-Index: 2
#2Masahiro Ohta (Kwansei Gakuin University)H-Index: 1
Last. Satoru Kato (Kwansei Gakuin University)H-Index: 9
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Abstract We investigated the formation mechanism of the new type of hydrogel we found previously in the lipid system composed of a crude lecithin mixture (PC70) and hexadecanol (HD) [1] by examining purified lipid systems systematically and quantitatively. On the basis of a working hypothesis that the charged lipids included in PC70 play a crucial role in the formation of the homogeneous hydrogel, we analyzed the physicochemical properties and structures of the simplified ternary bilayer system ...
4 CitationsSource
#1Sureewan Duangjit (Hoshi University)H-Index: 8
#2Yasuko Obata (Hoshi University)H-Index: 20
Last. Kozo Takayama (Hoshi University)H-Index: 47
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26 CitationsSource