NAI Director Seminar: Eric Gaucher -"Inferring Ancient Proteins" 11am PST

Event Details

NAI Director Seminar: Eric Gaucher -"Inferring Ancient Proteins" 11am PST

Time: September 24, 2012 from 11am to 12pm
Event Type: webinar
Organized By: NASA Astrobiology Institute
Latest Activity: Sep 24, 2012

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Event Description

This seminar will focus on our previous and recent efforts that attempt to resurrect in the laboratory ancient proteins as inferred from evolutionary analyses of modern (extant) sequences placed in a phylogenetic context. Ancestral Sequence Reconstruction (ASR) of disparate protein families has revealed clues about ancient life that are consistent with particular geological studies. The seminar will also acknowledge the elephant sitting in the ASR room - how can we possibly know whether our ancestral proteins consist of accurate amino acid sequences. To address this, we have developed an experimental system to benchmark ASR algorithms by generating an artificial phylogeny in the laboratory using fluorescent proteins. Lastly, we will briefly discuss how ancient proteins can be exploited by the commercial and biomedical sectors as a practical extension of fundamental astrobiology research.

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What do biosignatures tell us

Started by Ken Jones in SAGANet Community Jul 11. 0 Replies

Lately there has been a lot of talk about biosignatures. I've even come across articles where they talk about using biosignatures to look for life beyond earth in the rocks here on earth by searching for biosignatures of past life in rocks. I'm just…Continue

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