similar to unknown protein [Arabidopsis thaliana] (TAIR:AT1G15860.1); similar to SM10 [Nicotiana tabacum] (GB:ABI49160.1); contains InterPro domain Protein of unknown function DUF298 (InterPro:IPR005176); contains InterPro domain UBA-like (InterPro:IPR009060); contains InterPro domain Defective in cullin neddylation (InterPro:IPR014764); contains InterPro domain Ubiquitin-associated/translation elongation factor EF1B, N-terminal (InterPro:IPR000449)