Biochemistry and genetics of autotrophy in Methanococcus. Progress report

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In the last two years of this research, the most exciting results have come from the work on the genetics of methanococci. First, the author demonstrated that the cryptic plasmid from Methanococcus maripaludis C5, pURB500, could be transformed into Methanococcus maripaludis JJ. Strain JJ is the type strain of M. maripaludis and has only about 65% DNA:DNA hybridization to strain C5. Because of the low relatedness of these strains, it was not obvious that pURB500 could be transferred between them. This goal was achieved by first transforming strain C5 with a series of suicide plasmids containing the pac cassette, which ... continued below

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14 p.

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Whitman, W.B. September 1, 1998.

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Description

In the last two years of this research, the most exciting results have come from the work on the genetics of methanococci. First, the author demonstrated that the cryptic plasmid from Methanococcus maripaludis C5, pURB500, could be transformed into Methanococcus maripaludis JJ. Strain JJ is the type strain of M. maripaludis and has only about 65% DNA:DNA hybridization to strain C5. Because of the low relatedness of these strains, it was not obvious that pURB500 could be transferred between them. This goal was achieved by first transforming strain C5 with a series of suicide plasmids containing the pac cassette, which possessed the selectable puromycin resistance marker, and different cloned fragments of pURB500. From the puromycin-resistant transformants, a plasmid was isolated that transformed strain JJ. However, when this plasmid was electroporated into E. coli, only rearrangement products were obtained that contained small portions of the original pURB500. These plasmids no longer transformed Methanococcus. While these experiments did not yield a shuttle vector, they demonstrated that pURB500 could replicate in strain JJ.

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14 p.

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OSTI as DE98007374

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  • Other Information: PBD: [1998]

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  • Other: DE98007374
  • Report No.: DOE/ER/20158--T1
  • Grant Number: FG05-94ER20158
  • DOI: 10.2172/663534 | External Link
  • Office of Scientific & Technical Information Report Number: 663534
  • Archival Resource Key: ark:/67531/metadc709144

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  • September 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 4, 2015, 3:25 p.m.

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Whitman, W.B. Biochemistry and genetics of autotrophy in Methanococcus. Progress report, report, September 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc709144/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.