{"id":6165,"date":"2015-11-05T23:24:52","date_gmt":"2015-11-05T21:24:52","guid":{"rendered":"http:\/\/karmaka.de\/?p=6165"},"modified":"2015-11-05T23:24:52","modified_gmt":"2015-11-05T21:24:52","slug":"polymer-amide-in-the-allende-and-murchison-meteorites","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=6165","title":{"rendered":"Polymer amide in the Allende and Murchison meteorites"},"content":{"rendered":"<p>McGeoch, J. E. M. and McGeoch, M. W.<\/p>\n<p>Meteoritics &#038; Planetary Science.<br \/>\ndoi: 10.1111\/maps.12558<\/p>\n<p><a href=\"http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.12558\/abstract\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;It has been proposed that exothermic gas phase polymerization of amino acids can occur in the conditions of a warm dense molecular cloud to form hydrophobic polymer amide (HPA) (McGeoch and McGeoch 2014). In a search for evidence of this presolar chemistry Allende and Murchison meteorites and a volcano control were diamond burr-etched and Folch extracted for potential HPA yielding 85 unique peaks in the meteorite samples via matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI TOF\/MS). The amino acids after acid hydrolysis in Allende were below the level of detection but many of the Allende peaks via the more sensitive MALDI\/TOF analysis could be fitted to a polymer combination of glycine, alanine, and alpha-hydroxyglycine with high statistical significance. A similar significant fit using these three amino acids could not be applied to the Murchison data indicating more complex polymer chemistry.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>McGeoch, J. E. M. and McGeoch, M. W. Meteoritics &#038; Planetary Science. doi: 10.1111\/maps.12558 LINK &#8220;It has been proposed that exothermic gas phase polymerization of amino acids can occur in the conditions of a warm&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152,9],"tags":[108,1865,2150,107],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/6165"}],"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=6165"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/6165\/revisions"}],"predecessor-version":[{"id":6166,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/6165\/revisions\/6166"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}