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Isolation of an autotrophic ammonia-oxidizing marine archaeon
The isolation of a marine crenarchaeote that grows chemolithoautotrophically by aerobically oxidizing ammonia to nitrite—the first observation of nitrification in the Archaea is reported, suggesting that nitrifying marine Cren archaeota may be important to global carbon and nitrogen cycles. Expand
Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea
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. Expand
Cultivation of a thermophilic ammonia oxidizing archaeon synthesizing crenarchaeol.
The cultivation of a thermophilic nitrifier ('Candidatus Nitrosocaldus yellowstonii'), an autotrophic crenarchaeote growing up to 74 degrees C by aerobic ammonia oxidation, providing the first direct evidence for its synthesis by a thermophile. Expand
Marine ammonia-oxidizing archaeal isolates display obligate mixotrophy and wide ecotypic variation
  • W. Qin, S. Amin, +7 authors D. Stahl
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences
  • 11 August 2014
It is shown that some coastal marine AOA can remain active with increasing acidification of the oceans and provide new understanding of the physiological basis of the remarkable ecological success reflected by their generally high abundance in marine environments. Expand
The Electron Transfer System of Syntrophically Grown Desulfovibrio vulgaris
It is demonstrated that syntrophic growth and sulfate respiration use largely independent energy generation pathways and imply that to understand microbial processes that sustain nutrient cycling, lifestyles not captured in pure culture must be considered. Expand
Hemolytic, but Not Cell-invasive Activity, of Adenylate Cyclase Toxin Is Selectively Affected by Differential Fatty-acylation in Escherichia coli(*)
The observations suggest that the site and nature of posttranslational fatty-acylation can be dictated by the bacterial host used for expression and can have a significant, but selective, effect on protein function. Expand
Nitrosopumilus maritimus gen. nov., sp. nov., Nitrosopumilus cobalaminigenes sp. nov., Nitrosopumilus oxyclinae sp. nov., and Nitrosopumilus ureiphilus sp. nov., four marine ammonia-oxidizing archaea
  • W. Qin, K. Heal, +13 authors D. Stahl
  • Biology, Medicine
  • International journal of systematic and…
  • 16 October 2017
Four mesophilic, neutrophilic, and aerobic marine ammonia-oxidizing archaea, designated strains SCM1T, HCA1T, HCE1T and PS0T, were isolated from a tropical marine fish tank, dimly lit deep coastalExpand
Functional responses of methanogenic archaea to syntrophic growth
The discovery of interspecies alanine transfer adds another metabolic dimension to this environmentally relevant mutualism, suggesting that paralogous genes enable the methanogen to adapt to changing substrate availability, sustaining it under environmental conditions that are often near the thermodynamic threshold for growth. Expand
Recovery of temperate Desulfovibrio vulgaris bacteriophage using a novel host strain.
Comparative whole-genome microarray and polymerase chain reaction analyses demonstrated that the absence of genes annotated in the Hildenborough genome as phage or phage-related contributed to the significant genome reduction in strain DePue. Expand
Contribution of mobile genetic elements to Desulfovibrio vulgaris genome plasticity.
The genome of Desulfovibrio vulgaris strain DePue, a sulfate-reducing Deltaproteobacterium isolated from heavy metal-impacted lake sediment, was completely sequenced and compared with the type strain D. vulgaris Hildenborough, where greater interstrain variation within regions associated with phage insertion and exopolysaccharide biosynthesis was established. Expand