There was a great paper in MCP recently that looked at the metaproteomics of baby poo. Turns out that wasn't the only group working on this easy to obtain, but tough to process, sample type!
This is a surprisingly comprehensive review on the topic -- in fact, this is one of two published this month, in what appears to be a rapidly growing area of our field. I'm challenged sometimes by finding clear peptide level differences in samples from a single -- fully sequenced - species. In high complexity ecosystems? Ouch.
If this area really is growing as fast as the recent literature suggests we all might be called upon to do this sooner or later and this review is a great place to start on the topic!
Not-at-all related to this paper:
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