This ATP-grasp family is related to carbamoyl phosphate synthetase. These genes are found in the biosynthetic operon associated with the Ter stress response operon and are predicted to be involved in the biosynthesis of a ribo-nucleoside involved in stress response [1].

1: Ter-dependent stress response systems: novel pathways related to metal sensing, production of a nucleoside-like metabolite, and DNA-processing. Anantharaman V, Iyer LM, Aravind L; Mol Biosyst. 2012;8:3142-3165. PMID:23044854