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Predicted bacteriorhodopsin from Exiguobacterium sibiricum is a functional proton pump.

L E Petrovskaya1, E P Lukashev, V V Chupin

  • 1Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation. lpetr65@yahoo.com

FEBS Letters
|September 14, 2010
PubMed
Summary

Researchers expressed Exiguobacterium sibiricum bacteriorhodopsin (ESR) from ancient permafrost, finding it binds retinal and transports protons. This ancient protein functions in a proton pump, offering insights into microbial adaptation.

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