title: The activation of amino acids for biosynthesis of gramicidin S.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology; D000596:Amino Acids / Q000378:metabolism*; D001407:Bacillus / Q000378:metabolism*; D002247:Carbon Isotopes; D002850:Chromatography, Gel; D000242:Cyclic AMP; D010759:Phosphorus Isotopes; D014316:Tritium; D014449:Tyrothricin / Q000096:biosynthesis*
chemical_list: D000596:Amino Acids; D002247:Carbon Isotopes; D010759:Phosphorus Isotopes; D014316:Tritium; D014449:Tyrothricin; D000255:Adenosine Triphosphate; D000242:Cyclic AMP