Is predicted to encode a protein with the following domains: Ubiquitin-activating enzyme E1, C-terminal; Ubiquitin fold domain; and Ubiquitin-activating enzyme E1, C-terminal domain superfamily.
Is predicted to encode a protein with the following domains: E1-E2 ATPase and P-type ATPase, A domain superfamily. Is an ortholog of C. elegans catp-7.