Abstract
Proteorhodopsin (PR) sequences were PCR amplified from three Andean acidic hot spring samples. These sequences were similar to freshwater and marine PRs and they contained residues indicative of proton-pumping activity and of proteins that absorb green light; these findings suggest that PRs might contribute to cellular metabolism in these habitats.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Altitude
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Amino Acid Sequence
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Bacteria / genetics*
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Bacteria / metabolism*
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Fresh Water / microbiology
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Hot Springs / microbiology*
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Light
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Microbial Consortia / genetics*
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Phylogeny
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Rhodopsin / analysis
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Rhodopsin / genetics*
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Rhodopsins, Microbial
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Sequence Alignment
Substances
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Rhodopsins, Microbial
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proteorhodopsin
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Rhodopsin