Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica
Carbonaceous chondrites contain numerous indigenous organic compounds and could have been an important source of prebiotic compounds required for the origin of life on Earth or elsewhere. Extraterrestrial amino acids have been reported in five of the eight groups of carbonaceous chondrites and are m...
Main Authors: | , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
2013
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/20130014351 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:20130014351 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:20130014351 2023-05-15T13:33:56+02:00 Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica Glavin, Daniel P. Elsila, Jamie E. Dworkin, Jason P. Hein, Jason E. Burton, Aaron S. Unclassified, Unlimited, Publicly available February 19, 2013 application/pdf http://hdl.handle.net/2060/20130014351 unknown Document ID: 20130014351 http://hdl.handle.net/2060/20130014351 Copyright, Distribution as joint owner in the copyright CASI Space Sciences (General) GSFC-E-DAA-TN8875 Meteoritics and Planetary Science; 48; Issue; 390-402 2013 ftnasantrs 2019-07-21T00:35:50Z Carbonaceous chondrites contain numerous indigenous organic compounds and could have been an important source of prebiotic compounds required for the origin of life on Earth or elsewhere. Extraterrestrial amino acids have been reported in five of the eight groups of carbonaceous chondrites and are most abundant in CI, CM, and CR chondritesbut are also present in the more thermally altered CV and CO chondrites. We report the abundance, distribution, and enantiomeric and isotopic compositions of simple primary amino acids in six metal-rich CH and CB carbonaceous chondrites that have not previously been investigated for amino acids: Allan Hills (ALH) 85085 (CH3), Pecora Escarpment(PCA) 91467 (CH3), Patuxent Range (PAT) 91546 (CH3), MacAlpine Hills (MAC) 02675(CBb), Miller Range (MIL) 05082 (CB), and Miller Range (MIL) 07411 (CB). Amino acid abundances and carbon isotopic values were obtained by using both liquid chromatography time-of-flight mass spectrometry and fluorescence, and gas chromatography isotope ratiomass spectrometry. The (delta D, delta C-13, delta N-15) ratios of multiple amino acids fall outside of the terrestrial range and support their extraterrestrial origin. Extracts of CH chondrites were found to be particularly rich in amino acids (1316 parts per million, ppm) while CB chondrite extracts had much lower abundances (0.22 ppm). The amino acid distributions of the CH and CB chondrites were distinct from the distributions observed in type 2 and 3 CM and CR chondrites and contained elevated levels of beta-, gamma-, and delta-amino acids compared to the corresponding alpha-amino acids, providing evidence that multiple amino acid formation mechanisms were important in CH and CB chondrites. Other/Unknown Material Antarc* Antarctica NASA Technical Reports Server (NTRS) Allan Hills ENVELOPE(159.667,159.667,-76.717,-76.717) Miller Range ENVELOPE(157.000,157.000,-83.167,-83.167) Pecora Escarpment ENVELOPE(-68.707,-68.707,-85.639,-85.639) MacAlpine Hills ENVELOPE(160.500,160.500,-84.217,-84.217) Patuxent Range ENVELOPE(-64.500,-64.500,-84.716,-84.716) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Space Sciences (General) |
spellingShingle |
Space Sciences (General) Glavin, Daniel P. Elsila, Jamie E. Dworkin, Jason P. Hein, Jason E. Burton, Aaron S. Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica |
topic_facet |
Space Sciences (General) |
description |
Carbonaceous chondrites contain numerous indigenous organic compounds and could have been an important source of prebiotic compounds required for the origin of life on Earth or elsewhere. Extraterrestrial amino acids have been reported in five of the eight groups of carbonaceous chondrites and are most abundant in CI, CM, and CR chondritesbut are also present in the more thermally altered CV and CO chondrites. We report the abundance, distribution, and enantiomeric and isotopic compositions of simple primary amino acids in six metal-rich CH and CB carbonaceous chondrites that have not previously been investigated for amino acids: Allan Hills (ALH) 85085 (CH3), Pecora Escarpment(PCA) 91467 (CH3), Patuxent Range (PAT) 91546 (CH3), MacAlpine Hills (MAC) 02675(CBb), Miller Range (MIL) 05082 (CB), and Miller Range (MIL) 07411 (CB). Amino acid abundances and carbon isotopic values were obtained by using both liquid chromatography time-of-flight mass spectrometry and fluorescence, and gas chromatography isotope ratiomass spectrometry. The (delta D, delta C-13, delta N-15) ratios of multiple amino acids fall outside of the terrestrial range and support their extraterrestrial origin. Extracts of CH chondrites were found to be particularly rich in amino acids (1316 parts per million, ppm) while CB chondrite extracts had much lower abundances (0.22 ppm). The amino acid distributions of the CH and CB chondrites were distinct from the distributions observed in type 2 and 3 CM and CR chondrites and contained elevated levels of beta-, gamma-, and delta-amino acids compared to the corresponding alpha-amino acids, providing evidence that multiple amino acid formation mechanisms were important in CH and CB chondrites. |
format |
Other/Unknown Material |
author |
Glavin, Daniel P. Elsila, Jamie E. Dworkin, Jason P. Hein, Jason E. Burton, Aaron S. |
author_facet |
Glavin, Daniel P. Elsila, Jamie E. Dworkin, Jason P. Hein, Jason E. Burton, Aaron S. |
author_sort |
Glavin, Daniel P. |
title |
Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica |
title_short |
Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica |
title_full |
Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica |
title_fullStr |
Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica |
title_full_unstemmed |
Extraterrestrial Amino Acids Identified in Metal-Rich CH and CB Carbonaceous Chondrites from Antarctica |
title_sort |
extraterrestrial amino acids identified in metal-rich ch and cb carbonaceous chondrites from antarctica |
publishDate |
2013 |
url |
http://hdl.handle.net/2060/20130014351 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(159.667,159.667,-76.717,-76.717) ENVELOPE(157.000,157.000,-83.167,-83.167) ENVELOPE(-68.707,-68.707,-85.639,-85.639) ENVELOPE(160.500,160.500,-84.217,-84.217) ENVELOPE(-64.500,-64.500,-84.716,-84.716) |
geographic |
Allan Hills Miller Range Pecora Escarpment MacAlpine Hills Patuxent Range |
geographic_facet |
Allan Hills Miller Range Pecora Escarpment MacAlpine Hills Patuxent Range |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
CASI |
op_relation |
Document ID: 20130014351 http://hdl.handle.net/2060/20130014351 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766047275949228032 |