PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26278451-1 2014 Herein, we report the first direct evidence for the formation of pyrimidine ion isomers by sequential reactions of HCN with the acetylene radical cation in the gas phase at ambient temperature using the mass-selected variable temperature and pressure ion mobility technique. pyrimidine 65-75 metastasis associated lung adenocarcinoma transcript 1 Homo sapiens 115-118 17630841-0 2007 Adenine synthesis in interstellar space: mechanisms of prebiotic pyrimidine-ring formation of monocyclic HCN-pentamers. pyrimidine 65-75 metastasis associated lung adenocarcinoma transcript 1 Homo sapiens 105-108 17630841-4 2007 In this context, we have been studying the mechanism for prebiotic pyrimidine-ring formation of monocyclic HCN-pentamers with ab initio electronic structure theory. pyrimidine 67-77 metastasis associated lung adenocarcinoma transcript 1 Homo sapiens 107-110