Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Alex L. Sessions"'
Autor:
Elliott P. Mueller, Juliann Panehal, Alexander Meshoulam, Min Song, Christian T. Hansen, Oliver Warr, Jason Boettger, Verena B. Heuer, Wolfgang Bach, Kai-Uwe Hinrichs, John M. Eiler, Victoria Orphan, Barbara Sherwood Lollar, Alex L. Sessions
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The deep continental crust represents a vast potential habitat for microbial life where its activity remains poorly constrained. Organic acids like acetate are common in these ecosystems, but their role in the subsurface carbon cycle - inclu
Externí odkaz:
https://doaj.org/article/c5f52ad813264423b2f5efd8e823cac5
Publikováno v:
Frontiers in Microbiology, Vol 15 (2024)
The hydrogen isotope ratios (δ2HAA values) of amino acids in all organisms are substantially fractionated relative to growth water. In addition, they exhibit large variations within microbial biomass, animals, and human tissues, hinting at rich bioc
Externí odkaz:
https://doaj.org/article/cb558da339ce481fa9a0da75e4f61354
Autor:
Min Sub Sim, Hideaki Ogata, Wolfgang Lubitz, Jess F. Adkins, Alex L. Sessions, Victoria J. Orphan, Shawn E. McGlynn
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Changes in S-isotope ratios over time provide clues to understanding the co-evolution of Earth and its biosphere. Here the authors determine the isotope effect of the first reductive enzyme in the sulfate respiration pathway and reinterpret sedimenta
Externí odkaz:
https://doaj.org/article/3e09ea6eff834464aa4dc5bcb8ebc833
Autor:
Brian J. Campbell, Alex L. Sessions, Daniel N. Fox, Blair G. Paul, Qianhui Qin, Matthias Y. Kellermann, David L. Valentine
Publikováno v:
Frontiers in Microbiology, Vol 8 (2017)
Fatty acids produced by H2-metabolizing bacteria are sometimes observed to be more D-depleted than those of photoautotrophic organisms, a trait that has been suggested as diagnostic for chemoautotrophic bacteria. The biochemical reasons for such a de
Externí odkaz:
https://doaj.org/article/0144abbd07b14a8ab6da41eb7291164f
Publikováno v:
Analytical Chemistry. 94:1092-1100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f63272ce3c74f76e9377910fb1cf1491
https://doi.org/10.1021/acs.analchem.1c04141
https://doi.org/10.1021/acs.analchem.1c04141
Autor:
Woodward W. Fischer, Yuwei Wang, Haojia Abby Ren, Alexandra Auderset, Xingchen Wang, Gerald H. Haug, Zhan Su, Daniel M. Sigman, Alfredo Martínez-García, Yige Zhang, Birger Rasmussen, Alex L. Sessions
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 119 (45)
Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America
The modern Pacific Ocean hosts the largest oxygen-deficient zones (ODZs), where oxygen concentrations are so low that nitrate is used to respire organic matter. The history of the ODZs may offer key insights into ocean deoxygenation under future glob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a8646641503c626e7ef2fbbf929d20e
https://hdl.handle.net/20.500.11850/580810
https://hdl.handle.net/20.500.11850/580810
Publikováno v:
GeobiologyREFERENCES. 5(1)
One of the outstanding current problems in both geobiology and environmental microbiology is the quantitative analysis of in situ microbial metabolic activities. Techniques capable of such analysis would have wide application, from quantifying natura
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff0a9c7c717ff15cf2c5a7db21ba6934
https://pubmed.ncbi.nlm.nih.gov/36298877
https://pubmed.ncbi.nlm.nih.gov/36298877
Autor:
Nathan F. Dalleska, Alex L. Sessions, Manuel Razo-Mejia, Victoria J. Orphan, Daniela Osorio-Rodriguez, Jess F. Adkins
Publikováno v:
Limnology and Oceanography. 66:3607-3618
The rapid turnover of dimethylsulfoniopropionate (DMSP), likely the most relevant dissolved organic sulfur compound in the surface ocean, makes it pivotal to understand the cycling of organic sulfur. Dimethylsulfoniopropionate is mainly synthesized b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00eec8ca772b2e5cd6b804f62024f7b0
https://doi.org/10.1002/lno.11901
https://doi.org/10.1002/lno.11901
Autor:
Elise B. Wilkes, Alex L. Sessions, Sarah S. Zeichner, Brooke Dallas, Brian Schubert, A. Hope Jahren, John M. Eiler
Publikováno v:
Rapid Communications in Mass Spectrometry. 36
Rationale: Position-specific ¹³C/¹²C ratios within amino acids remain largely unexplored in environmental samples due to methodological limitations. We hypothesized that natural-abundance isotope patterns in serine may serve as a proxy for plant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01728073201052514013da2f8de7ef98
https://doi.org/10.1002/rcm.9347
https://doi.org/10.1002/rcm.9347
Autor:
Sarah S. Zeichner, Elise B. Wilkes, Amy E. Hofmann, Laura Chimiak, Alex L. Sessions, Alexander Makarov, John M. Eiler
The Thermo Scientific™ QExactive Orbitrap™ mass spectrometer combined with a Thermo Scientific™ Trace™ 1310 GC enables high-mass-resolution measurements of molecular isotopic structure (e.g., molecular-average, position-specific, and multiple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97f39614a8be6ab5cafc15521c0daa10
https://resolver.caltech.edu/CaltechAUTHORS:20220513-557936000
https://resolver.caltech.edu/CaltechAUTHORS:20220513-557936000