An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)
An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)
Date
2008-01
Authors
Talbot, Helen M.
Coolen, Marco J. L.
Sinninghe Damste, Jaap S.
Coolen, Marco J. L.
Sinninghe Damste, Jaap S.
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Alternative Title
Presence of an unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)
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Keywords
Ace Lake
Bacteriohopanepolyols
αβ-bacteriohopanetetrol
Holocene
Bacteriohopanepolyols
αβ-bacteriohopanetetrol
Holocene
Abstract
Whilst investigating the intact biohopanoid (bacteriohopanepolyol, BHP) distribution in
Holocene sediments from Ace Lake (Antarctica), we have identified the presence of ab-
bacteriohopanetetrol in sediments aged up to 9400 years BP. To our knowledge, this is
the first time that an intact polyfunctionalised BHP with the “geological” 17α,21β(H)
configuration has been identified in a sediment. Previously, this structure has only been
observed in species of the nitrogen fixing bacterium Frankia. Its presence here in the
sedimentary environment has implications for the interpretation of hopanoid ββ/αβ
ratios in the geological record.
Description
Author Posting. © Elsevier B.V., 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Organic Geochemistry 39 (2008): 1029-1032, doi:10.1016/j.orggeochem.2008.01.008.