E
Elizabeth A. Karr
Researcher at University of Oklahoma
Publications - 22
Citations - 1453
Elizabeth A. Karr is an academic researcher from University of Oklahoma. The author has contributed to research in topics: Methanosarcina acetivorans & Electrophoretic mobility shift assay. The author has an hindex of 12, co-authored 21 publications receiving 1302 citations. Previous affiliations of Elizabeth A. Karr include Southern Illinois University Carbondale & Ohio State University.
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Journal ArticleDOI
Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea
Christopher B. Walker,J.R. de la Torre,Martin G. Klotz,Hidetoshi Urakawa,Nicolás Pinel,Daniel J. Arp,Céline Brochier-Armanet,Patrick S. G. Chain,Patrick S. G. Chain,Patrick S. G. Chain,Patricia P. Chan,A. Gollabgir,James Hemp,Michael Hügler,Elizabeth A. Karr,Martin Könneke,Maria W. Shin,Maria W. Shin,Thomas J. Lawton,Todd M. Lowe,Willm Martens-Habbena,Luis A. Sayavedra-Soto,D. Lang,D. Lang,Stefan M. Sievert,Amy C. Rosenzweig,Gerard Manning,David A. Stahl +27 more
TL;DR: The isolation of Candidatus “Nitrosopumilus maritimus” strain SCM1 is reported, revealing highly copper-dependent systems for ammonia oxidation and electron transport that are distinctly different from known ammonia-oxidizing bacteria.
Journal ArticleDOI
Remarkable diversity of phototrophic purple bacteria in a permanently frozen Antarctic lake.
TL;DR: The composition and activity of phototrophic purple bacteria in Lake Fryxell, Antarctica, is reported, as determined by analysis of a photosynthesis-specific gene, pufM, and an extensive diversity and highly stratified distribution of purple nonsulfur bacteria is revealed.
Journal ArticleDOI
Diversity and Distribution of Sulfate-Reducing Bacteria in Permanently Frozen Lake Fryxell, McMurdo Dry Valleys, Antarctica
Elizabeth A. Karr,W. Matthew Sattley,Melissa R. Rice,Deborah O. Jung,Michael T. Madigan,Laurie A. Achenbach +5 more
TL;DR: To investigate the population of sulfate-reducing bacteria in Lake Fryxell, both 16S rRNA gene and metabolic primer sets targeting the dsrA gene for the dissimilatory sulfite reductase alpha subunit were employed to analyze environmental DNA obtained from the water column and sediments.
Journal ArticleDOI
Biodiversity of methanogenic and other archaea in the permanently frozen Lake Fryxell, Antarctica.
Elizabeth A. Karr,Joshua M. Ng,Sara M. Belchik,W. Matthew Sattley,Michael T. Madigan,Laurie A. Achenbach +5 more
TL;DR: The Archaea present in Lake Fryxell are likely involved in the major biogeochemical cycles that occur there, and were detected in molecular diversity studies of the permanently frozen Lake Fryxia, Antarctica.
Journal ArticleDOI
The alternative oxidase (AOX) gene in Vibrio fischeri is controlled by NsrR and upregulated in response to nitric oxide
TL;DR: Qualitative PCR and reporter assays demonstrate that aox expression is induced in the presence of nitric oxide, and that the NO‐responsive regulatory protein NsrR mediates the response, and indicate a role for V. fischeri AOX in aerobic respiration during NO stress.