2005 Annual Science Report
University of Washington
Reporting | JUL 2004 – JUN 2005
Darwinian Chemistry
Project Progress
The Benner laboratory has defined much of the chemistry that would allow sugars and other components of RNA to arise on a prebiotic Earth. This chemistry provides suggestions for the design of future Mars missions, and a critique of past Mars missions.
The Benner laboratory has made further progress in establishing synthetic biology as a field, developing tools to replicate and sequence DNA with 6 and 8 nucleotide letters. By converting questions of “origins”, from biomacromolecules to enzymes to pathways to regulation to cells, into an experimental science assisted by deliberate design, this will contribute to our understanding of life in ways previously unavailable.
The Benner laboratory has collaborated with McKay in exploring the possibility of organics in extreme environments, where “extreme” here means “extreme on Earth”.
The Benner laboratory has defined chemistries that might support “Weird” life in truly extreme environments, including in the hydrocarbon phase on Titan, above Venus, and in crysolvents like liquid dinitrogen.
The Benner laboratory has continued work in experimental paleobiochemistry, a field invented in the Benner laboratory, to understand the emergence of complex ecosystems. This year, the focus was the evolution of fungi and plants on Earth near the end of the Age of Dinosaurs.
This work is supported by only a very small ($35,000 direct) subcontract from the NAI node at the University of Washington (Peter Ward, Principal Investigator). The principal funding for this activity comes from the NASA Exobiology program, and from the National Science Foundation.
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PROJECT INVESTIGATORS:
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RELATED OBJECTIVES:
Objective 2.1
Mars exploration
Objective 2.2
Outer Solar System exploration
Objective 3.1
Sources of prebiotic materials and catalysts
Objective 3.2
Origins and evolution of functional biomolecules
Objective 3.3
Origins of energy transduction
Objective 3.4
Origins of cellularity and protobiological systems
Objective 4.1
Earth's early biosphere
Objective 4.2
Foundations of complex life
Objective 4.3
Effects of extraterrestrial events upon the biosphere
Objective 5.2
Co-evolution of microbial communities
Objective 5.3
Biochemical adaptation to extreme environments
Objective 6.1
Environmental changes and the cycling of elements by the biota, communities, and ecosystems
Objective 6.2
Adaptation and evolution of life beyond Earth
Objective 7.1
Biosignatures to be sought in Solar System materials