An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)

Helen M. Talbot; Marco J. L. Coolen; Jaap S.  Sinninghe Damsté

doi:10.1016/j.orggeochem.2008.01.008

An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)

Helen M. Talbot, Marco J. L. Coolen, Jaap S. Sinninghe Damsté

non-UU output of UU-AW members

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Abstract

Whilst investigating the intact biohopanoid (bacteriohopanepolyol, BHP) distribution in Holocene sediments from Ace Lake (Antarctica), we found alpha beta-bacteriohopanetetrol in sediments aged up to 9400 yr BP. To our knowledge, this is the first time that an intact polyfunctionalised BHP with the "geological" 17 alpha,21 beta(H) configuration has been identified in a sediment. Previously, the structure had only been observed in species of the nitrogen fixing bacterium Frankia. Its presence in the sedimentary environment has implications for the interpretation of hopanoid beta beta/alpha beta ratios in the geological record. (c) 2008 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	1029-1032
Number of pages	4
Journal	Organic Geochemistry
Volume	39
Issue number	8
DOIs	https://doi.org/10.1016/j.orggeochem.2008.01.008
Publication status	Published - Aug 2008
Event	23rd International Meeting on Organic Geochemistry - Torquay Duration: 9 Sept 2007 → 14 Sept 2007

Keywords

Trap mass-spectrometry
Molecular fossils
Hopanoids
Bacteriohopanepolyols
Biosynthesis
Populations
Bacteria

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10.1016/j.orggeochem.2008.01.008

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title = "An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)",

abstract = "Whilst investigating the intact biohopanoid (bacteriohopanepolyol, BHP) distribution in Holocene sediments from Ace Lake (Antarctica), we found alpha beta-bacteriohopanetetrol in sediments aged up to 9400 yr BP. To our knowledge, this is the first time that an intact polyfunctionalised BHP with the {"}geological{"} 17 alpha,21 beta(H) configuration has been identified in a sediment. Previously, the structure had only been observed in species of the nitrogen fixing bacterium Frankia. Its presence in the sedimentary environment has implications for the interpretation of hopanoid beta beta/alpha beta ratios in the geological record. (c) 2008 Elsevier Ltd. All rights reserved.",

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KW - Trap mass-spectrometry

KW - Molecular fossils

KW - Hopanoids

KW - Bacteriohopanepolyols

KW - Biosynthesis

KW - Populations

KW - Bacteria

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ER -

An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)

Abstract

Keywords

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