This gene may encode proteasome activator complex subunit 2 protein (PMID: 10222192). This gene, located on chromosome 11, lacks a structured promoter and is intronless. It has also been described as a pseudogene (PMID: 9914329), however, it has an intact coding region and transcripts can be placed at this location unambiguously. An interferon-inducible gene located on chromosome 14, near the gene that encodes proteasome activator complex subunit 1 protein, is considered the functional gene. [provided by RefSeq, Jul 2013]