{"id":30204,"date":"2022-02-15T21:13:01","date_gmt":"2022-02-15T20:13:01","guid":{"rendered":"https:\/\/karmaka.de\/?p=30204"},"modified":"2022-02-15T21:13:02","modified_gmt":"2022-02-15T20:13:02","slug":"experimental-and-theoretical-constraints-on-amino-acid-formation-from-pahs-in-asteroidal-settings","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=30204","title":{"rendered":"Experimental and Theoretical Constraints on Amino Acid Formation from PAHs in Asteroidal Settings<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Claudia-Corina Giese, Inge Loes ten Kate, Martijn P. A. van den Ende, Mariette Wolthers, Jos\u00e9 C. Aponte, Eloi Camprubi, Jason P. Dworkin, Jamie E. Elsila, Suzanne Hangx, Helen E. King, Hannah L. Mclain, Oliver Pl\u00fcmper, and Alexander G. G. M. Tielens<\/p>\n\n\n\n<p>ACS Earth Space Chem.<br>Publication Date: February 15, 2022<\/p>\n\n\n\n<p><a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acsearthspacechem.1c00329\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acsearthspacechem.1c00329\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Amino acids and polycyclic aromatic hydrocarbons (PAHs) belong to the range of organic compounds detected in meteorites. In this study, we tested empirically and theoretically if PAHs are precursors for amino acids in carbonaceous chondrites, as previously suggested. We conducted experiments to synthesize amino acids from fluoranthene (PAH), with ammonium bicarbonate as a source for ammonia and carbon dioxide under mimicked asteroidal conditions. In our thermodynamic calculations, we extended our analysis to additional PAH\u2013amino acid combinations. We explored 36 reactions involving the PAHs naphthalene, anthracene, fluoranthene, pyrene, triphenylene, and coronene and the amino acids glycine, alanine, valine, leucine, phenylalanine, and tyrosine. Our experiments do not show the formation of amino acids, whereas our theoretical results hint that PAHs could be precursors of amino acids in carbonaceous chondrites at low temperatures.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Claudia-Corina Giese, Inge Loes ten Kate, Martijn P. A. van den Ende, Mariette Wolthers, Jos\u00e9 C. Aponte, Eloi Camprubi, Jason P. Dworkin, Jamie E. Elsila, Suzanne Hangx, Helen E. King, Hannah L. Mclain, Oliver Pl\u00fcmper,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152,61,77,9,576],"tags":[1865,1842,3273,232,2673],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30204"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=30204"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30204\/revisions"}],"predecessor-version":[{"id":30205,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30204\/revisions\/30205"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=30204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}