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Items: 19


Syntrophus aciditrophicus uses the same enzymes in a reversible manner to degrade and synthesize aromatic and alicyclic acids.

James KL, Kung JW, Crable BR, Mouttaki H, Sieber JR, Nguyen HH, Yang Y, Xie Y, Erde J, Wofford NQ, Karr EA, Loo JA, Ogorzalek Loo RR, Gunsalus RP, McInerney MJ.

Environ Microbiol. 2019 May;21(5):1833-1846. doi: 10.1111/1462-2920.14601.


Regulatory Targets of the Response Regulator RR_1586 from Clostridioides difficile Identified Using a Bacterial One-Hybrid Screen.

Hebdon SD, Menon SK, Richter-Addo GB, Karr EA, West AH.

J Bacteriol. 2018 Nov 6;200(23). pii: e00351-18. doi: 10.1128/JB.00351-18. Print 2018 Dec 1.


Crystal structures of two nitroreductases from hypervirulent Clostridium difficile and functionally related interactions with the antibiotic metronidazole.

Wang B, Powell SM, Hessami N, Najar FZ, Thomas LM, Karr EA, West AH, Richter-Addo GB.

Nitric Oxide. 2016 Nov 30;60:32-39. doi: 10.1016/j.niox.2016.09.003. Epub 2016 Sep 10.


Crystal structure and DNA binding activity of a PadR family transcription regulator from hypervirulent Clostridium difficile R20291.

Isom CE, Menon SK, Thomas LM, West AH, Richter-Addo GB, Karr EA.

BMC Microbiol. 2016 Oct 4;16(1):231.


The [4Fe-4S] clusters of Rpo3 are key determinants in the post Rpo3/Rpo11 heterodimer formation of RNA polymerase in Methanosarcina acetivorans.

Jennings ME, Lessner FH, Karr EA, Lessner DJ.

Microbiologyopen. 2017 Feb;6(1). doi: 10.1002/mbo3.399. Epub 2016 Aug 25.


Pyrophosphate-Dependent ATP Formation from Acetyl Coenzyme A in Syntrophus aciditrophicus, a New Twist on ATP Formation.

James KL, Ríos-Hernández LA, Wofford NQ, Mouttaki H, Sieber JR, Sheik CS, Nguyen HH, Yang Y, Xie Y, Erde J, Rohlin L, Karr EA, Loo JA, Ogorzalek Loo RR, Hurst GB, Gunsalus RP, Szweda LI, McInerney MJ.

MBio. 2016 Aug 16;7(4). pii: e01208-16. doi: 10.1128/mBio.01208-16.


The Methanosarcina acetivorans thioredoxin system activates DNA binding of the redox-sensitive transcriptional regulator MsvR.

Sheehan R, McCarver AC, Isom CE, Karr EA, Lessner DJ.

J Ind Microbiol Biotechnol. 2015 Jun;42(6):965-9. doi: 10.1007/s10295-015-1592-y. Epub 2015 Mar 20.


Transcription regulation in the third domain.

Karr EA.

Adv Appl Microbiol. 2014;89:101-33. doi: 10.1016/B978-0-12-800259-9.00003-2. Review.


Redox-sensitive DNA binding by homodimeric Methanosarcina acetivorans MsvR is modulated by cysteine residues.

Isom CE, Turner JL, Lessner DJ, Karr EA.

BMC Microbiol. 2013 Jul 16;13:163. doi: 10.1186/1471-2180-13-163.


Preliminary crystallography confirms that the archaeal DNA-binding and tryptophan-sensing regulator TrpY is a dimer.

Cafasso J, Manjasetty BA, Karr EA, Sandman K, Chance MR, Reeve JN.

Acta Crystallogr Sect F Struct Biol Cryst Commun. 2010 Nov 1;66(Pt 11):1493-5. doi: 10.1107/S1744309110036031. Epub 2010 Oct 28.


The alternative oxidase (AOX) gene in Vibrio fischeri is controlled by NsrR and upregulated in response to nitric oxide.

Dunn AK, Karr EA, Wang Y, Batton AR, Ruby EG, Stabb EV.

Mol Microbiol. 2010 Jul 1;77(1):44-55. doi: 10.1111/j.1365-2958.2010.07194.x. Epub 2010 May 4.


Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea.

Walker CB, de la Torre JR, Klotz MG, Urakawa H, Pinel N, Arp DJ, Brochier-Armanet C, Chain PS, Chan PP, Gollabgir A, Hemp J, Hügler M, Karr EA, Könneke M, Shin M, Lawton TJ, Lowe T, Martens-Habbena W, Sayavedra-Soto LA, Lang D, Sievert SM, Rosenzweig AC, Manning G, Stahl DA.

Proc Natl Acad Sci U S A. 2010 May 11;107(19):8818-23. doi: 10.1073/pnas.0913533107. Epub 2010 Apr 26.


TrpY regulation of trpB2 transcription in Methanothermobacter thermautotrophicus.

Karr EA, Sandman K, Lurz R, Reeve JN.

J Bacteriol. 2008 Apr;190(7):2637-41. doi: 10.1128/JB.01926-07. Epub 2008 Feb 8.


Spontaneous trpY mutants and mutational analysis of the TrpY archaeal transcription regulator.

Cubonová L, Sandman K, Karr EA, Cochran AJ, Reeve JN.

J Bacteriol. 2007 Jun;189(11):4338-42. Epub 2007 Mar 30.


Biodiversity of methanogenic and other archaea in the permanently frozen Lake Fryxell, Antarctica.

Karr EA, Ng JM, Belchik SM, Sattley WM, Madigan MT, Achenbach LA.

Appl Environ Microbiol. 2006 Feb;72(2):1663-6.


Diversity and distribution of sulfate-reducing bacteria in permanently frozen Lake Fryxell, McMurdo Dry Valleys, Antarctica.

Karr EA, Sattley WM, Rice MR, Jung DO, Madigan MT, Achenbach LA.

Appl Environ Microbiol. 2005 Oct;71(10):6353-9.


A gas vesiculate planktonic strain of the purple non-sulfur bacterium Rhodoferax antarcticus isolated from Lake Fryxell, Dry Valleys, Antarctica.

Jung DO, Achenbach LA, Karr EA, Takaichi S, Madigan MT.

Arch Microbiol. 2004 Oct;182(2-3):236-43. Epub 2004 Aug 31.


Remarkable diversity of phototrophic purple bacteria in a permanently frozen Antarctic lake.

Karr EA, Sattley WM, Jung DO, Madigan MT, Achenbach LA.

Appl Environ Microbiol. 2003 Aug;69(8):4910-4.

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