Dr. Jonathan D. Trent Profile

Dr. Jonathan D. Trent

Research Scientist at NASA Ames Research Ctr

SPIE Involvement:

Author

Proceedings Article | 16 February 2009 Paper

Intrinsic fluorescent recognition ligand scaffold based on chaperonins and water-soluble semiconductor quantum dots

Hongzhi Xie, Basil Swanson, Hiromi Kawaga, Jonathan Trent, Mudalige Kumara, Thomas Ippolito, Mircea Cotlet

Proceedings Volume 7188, 718807 (2009) https://doi.org/10.1117/12.809576

KEYWORDS: Proteins, Quantum dots, Luminescence, Nanoparticles, Acquisition tracking and pointing, Fluorescence correlation spectroscopy, Diffusion, Semiconductors, Quantum efficiency, Nanostructures

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Proceedings Article | 15 May 2007 Paper

The nano revolution: bottom-up manufacturing with biomolecules

Yi-Fen Li, Jing Li, Chad Paavola, Hiromi Kagawa, Suzanne Chan, Jonathan Trent

Proceedings Volume 6589, 658902 (2007) https://doi.org/10.1117/12.740793

KEYWORDS: Proteins, Nickel, Manufacturing, Metals, Transmission electron microscopy, Particles, Molecular self-assembly, Electrodes, Palladium, Nanowires

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Proceedings Article | 22 September 2005 Paper

Extremophiles, survivophiles, and the continuity of life on Earth

Carol Chao, Carissa Chu, Jonathan Trent

Proceedings Volume 5906, 59060B (2005) https://doi.org/10.1117/12.626561

KEYWORDS: Organisms, Genetics, Macromolecules, Proteins, Bacteria, Planets, Atmospheric particles, Microorganisms, Earth's atmosphere, Asteroids

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In this paper we describe "extremophiles" and "survivophiles" and consider their role in the continuity and perpetuity of life throughout Earth's turbulent history. The term "extremophiles" refers to organisms active in what are considered by human beings to be extreme physical or chemical environments. The term "survivophiles" collectively refers to organisms capable of assuming reversible inactive states (suspended or latent), which enable them to survive harsh conditions until what they consider hospitable conditions to metabolic activity return. We present the various biological states of individual organisms (active, inactive, transition) and how these states relate to the dynamic biological-physicalchemical context that makes up an organism's environment. We argue that within these states the special adaptations of extremophiles and survivophiles have allowed life as a phenomenon to withstand global catastrophes, which include massive volcanic eruptions, supernovae explosions, and asteroid impacts. These are the catastrophes that changed the environments on Earth too quickly for organisms to adapt by Darwinian evolution. We suggest that genetic adaptations of extremophiles both allow them to thrive under at least some of the harsh conditions caused by catastrophes and these same adaptations also make them a source of genetic information for intrinsically stable macromolecules. This genetic information for stable macromolecules can be shared with other organisms through lateral gene transfer. Similarly, the adaptations of survivophiles increase survival during catastrophes and provide a source of genes for bio-stabilizing molecules (e.g., heat shock proteins, trehalose and other organic solutes). We conclude that the strategies and the specialized genes for growth and survival of extremophiles and survivophiles impact the continuity and perpetuity of life during global catastrophes by expanding the range of possible refugia during these events and by providing genetic information to other organisms.

Conference Committee Involvement (4)

Instruments, Methods, and Missions for Astrobiology XIII

3 August 2010 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology X

28 August 2007 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology IX

14 August 2006 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology IX

31 July 2005 | San Diego, California, United States

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