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Re: Soft tissue: what can we expect to learn?

On Sat, 26 Mar 2005 11:52:21 -0800 (PST) Jura <pristichampsus@yahoo.com>

> Offhand, I can't think of anything in a basic protein,
> that would indicate one metabolic preference over the
> other. The only thing that comes to mind, is finding a
> protein with an analogue/homologue which has a very
> narrow temperature tolerance.

Carbon isotopic ratios and nitrogen isotopic ratios are used to infer the
diet of the animal.  Oxygen isotopic ratios are
paleo-temperature-dependent, but I don't remember if oxygen is part of
the protein structure.