| 1. |
Noriaki Yamauchi, Confirmation of the structure of sn-2-sestaterpenyl (C25) "extended" archaeol with the comparison of sn-3-sestaterpenyl counterpart in halophilic archaeal lipid core and possibility of novel halophilic archaea, Researches in Organic Geochemistry, 81, 1-10, 2019.12. |
| 2. |
Horai Shunsuke , Noriaki Yamauchi, Naraoka Hiroshi, Simultaneous total analysis of core and polar membrane lipids in archaea by HPLC/HRMS coupled with heated electrospray ionization, Rapid communication in mass spectrometry, https://doi.org/10.1002/rcm.8506, 33, 20, 1571-1577, 2019.10, Archaea have characteristic membrane lipids including diether and/or tetraether isoprenoidal core lipids with various polar head groups. Since the polar group is removed soon after the end of archaeal activity, the occurrence of core and polar lipids are regarded as dead and active signals, respectively. The core and polar lipids have generally been analyzed separately using atmospheric pressure chemical ionization (APCI) and electrospray ionization (ESI), respectively, coupled with mass spectrometry. Methods: In this study, simultaneous analysis of core and polar archaeal lipids have been examined using heated electrospray ionization (HESI) by high performance liquid chromatography/high resolution mass spectrometry (HPLC/HRMS). Results: Both core and intact polar lipids can be analyzed simultaneously by HESI with good sensitivity (sub ng to 100 ng) and separation using a semi-bore diol column by normal phase chromatography. The core lipids eluted firstly to separate archeaol, then GDGTs followed by the polar lipids with glycosides and glycophosphates. The relative GDGT composition is identical between HESI and APCI methods. Conclusions: The simultaneous analysis has a benefit to minimize sample amount and elution solvent as well as preparation work. The method can also be applied to a compound class fractionation for compound-specific carbon and hydrogen isotope analysis.. |
| 3. |
Noriaki Yamauchi, Ryo Tanoue, Deuterium incorporation experiments from (3R)- and (3S)-[3-2H]leucine into characteristic isoprenoidal lipid-core of halophilic archaea suggests the involvement of isovaleryl-CoA dehydrogenase Biosynthesis., Biosci. Biotechnol. Biochem., 81, 2062-2070, 2017.10. |
| 4. |
Noriaki YAMAUCHI, Preparation, and analysis of 2-hydroxyarchaeol isomeric mixture prior to the determination of stereochemistry, Reserches in Organic Geochemistry, 30, 33-36, 2014.12, A mixture of 2-hydroxyarchaeol isomers is chemically synthesized from commercially available racemic isophytol. In the gas chromatogram of TMS-derivative of the synthesized material, two peaks of equal intensity are observed, suggesting the occurrence of two stereoisomers at C-3 (hydroxylated carbon in the isoprenoid chain). The 13C NMR spectrum of the synthesized material is slightly different from that of 2-hydroxyarchaeol from microbial origin, which is also consistent with the occurrence of two isomers in the former. By contrast, natural 2-hydroxyarchaeol from microbes and sediments is inferred to consist of a single stereoisomer at C-3.. |
| 5. |
YAMAUCHI Noriaki, NAKAYAMA Yusuke, Biosynthetic Mechanism of L-Gulose in Main Polar Lipid of Themoplasma acidophilum, its Possibility of Resemblance to Plant Ascorbic Acid Biosynthesis., Biosci. Biotechnol. Biochem., 10.1271/bbb.130442, 77, 10, 2087-2093, 2013.10. |
| 6. |
Coal (2): Origin of Coal-Geological Age, Plant, and Chemical Properties. |
| 7. |
Origin of Energy (4): Evolution of Plant from Microorganisms toward Terrestrial Botany. |
| 8. |
Origin of Energy (2): Birth of Life on the Earth, Prenatal-Prebiotic Organic Molecule Synthesis and Postnatal ― the Geochemical Footprint. |
| 9. |
山内 敬明, The Pathway of Leucine to Mevalonate in Halophilic Archaea: Efficient Incorporation of Leucine into Isoprenoidal Lipid with the Involvement of Isovaleryl-CoA Dehydrogenase in Halobacterium salinarum, Biosci. Biotechnol. Biochem., 2010.02. |
| 10. |
ESI-MS and GC-MS Analyses of C25-C20 Isoprenoidal Diether, Originated from Halophilic Archaea with Reference to an Indicator for Hypersaline Environment. |
| 11. |
Noriaki Yamauchi, Norisuke Kamada, Hideyoshi Ueoka , The Possibility of Involvement of Cyclase Enzyme of the Calditol Carbocycle with Broad Substrate Specificity in Sulfolobus acidcaldarius, a Typical Thermophilic Archaea, Chem. Lett., 35, 1230-1231, 2006.07. |
| 12. |
Noriaki Yamauchi, Satoshi Endoh, Improved Isotopic Deuterium Labeling at the Diastereotopic Methyl Group of Leucine : a Synthetic Route to (4S)- and (4R)-[5-2H1]Leucine, Biosci. Biotechnol. Biochem.,, 70, 276-278, 2006.01. |
| 13. |
Noriaki Yamauchi, Wakana Toyodome, Kiyomi Umeda, Noriyoshi Nishida, and Tatsushi Murae, Structural Features of Humic Acid of the Coastal Sediment in Ariake Sea Tidelands
: Use of Humic Acid as an Environmental Indicator of the River Basin and the Coastal Region, Analytical Sciences, 10.2116/analsci.20.1453, 20, 10, 1453-1457, 1453-1457, 2004.09. |
| 14. |
Noriaki Yamauchi, Hideyoshi Ueoka, Norisuke Kamada, and Tatsushi Murae, Resemblance of carbocycle formation from carbohydrates between archaea and eucarya/eubacteria. Biosynthesis of calditol, the characteristic lipid-content molecule in Sulfolobus acidocaldarius., Bull. Chem. Soc. Jpn, 10.1246/bcsj.77.771, 77, 4, 771-778, 771-778, 2004.04. |
| 15. |
Noriaki Yamauchi, Takamasa Suzuki, Yuusuke Kubo, and Tatsushi Murae, The minimum prerequisite of the primordial membrane- the function of liposome made from the C-20 isoprenoidal lipids., Geochimica Cosmochimica Acta., 67, 18, A557-A557, A557, 2003.09. |
| 16. |
T. Murae, Y. Takamatsu, R. Muraoka, S. Endou, and N. Yamauchi, Facile Distinction of Neutral and Acidic Tetraether Lipids in Archaea Membrane by Halogen Atom Adduct Ions in Electrospray Ionization Mass Spectrometry, J. Mass. Spectrom.,, 10.1002/jms.276, 37, 2, 209-215, 209-215, 2002.07. |
| 17. |
Noriaki Yamauchi, Satoshi Endoh, Keiko Kato, and Tatsushi Murae, The observation of the pathway from lysine to the isoprenoidal lipid of halophilic archaea, Halobacterium halobium and Natrinema pallidum, using regiospecifically deuterated lysine, Bull. Chem. Soc. Jpn.,, 2001.09. |
| 18. |
Noriaki. Yamauchi, Yoshiaki Natsubori, and Tatsushi Murae, Practical Synthesis of [3-(2H3)methyl]Mevalonolactone and Incorporation Experiment of [3-(2H3)methyl]Mevalonolactone and [13C]Labeled Acetate in the Biosynthesis of Isoprenoidal Diether Lipids of Halophilic Archaea, Bull. Chem. Soc. Jpn.,, 10.1246/bcsj.73.2513, 73, 11, 2513-2519, 2000.07. |
| 19. |
Eva Gotze, Kraus Kis, Wolfgang Eisenreich, Noriaki Yamauchi, Katsumi Kakinuma and Abelbert Bacher, Biosynthesis of Rivoflavin. Stereochemistry of the 3,4-Dihydroxy-2-butanone 4-phosphate Synthase Reaction, J. Org. Chem, 1998.11. |
| 20. |
Noriaki Iwase, Fumitaka Kudo, Noriaki Yamauchi and Katsumi Kakinuma, Substrate Specificity of 2-Deoxy-scyllo-inoosose Synthase, the Starter Enzyme for 2-Deoxystreptamine Biosynthesis, toward Deoxygluocose-6-phosphates and Proposed Mechanism, Biosci. Biotechnol. Biochem, 1998.06. |
| 21. |
Noriaki Yamauchi, Masashi Kishida, Keiju Sawada, Yuji Ohashi, Tadashi Eguchi and Katsumi Kakinuma, Solvent-dependent Stereochemical Anomaly in the Nucleophilic Addition of Ester-derived Enolate to Bicyclo[3,3,0]octan-2-one System of Diacetone Glucos-3-ulose, Chem. Lett, 1998.04. |
| 22. |
Mikio Morita, Noriaki Yamauchi, Tadashi Eguchi, and Katsumi Kakinuma, Structural Diversity of the Menbrane Core Lipid of Extreme Halophiles, Biosci. Biotechnol. Biochem, 1998.03. |
