Ontology of Biological Attributes identifier OBA_2057415 (level of ubiquitin-like modifier-activating enzyme 1 (human) in cerebrospinal fluid) is the amount of a ubiquitin-like modifier-activating enzyme 1 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid ubiquitin-like modifier-activating enzyme 1 (human) amount.