A protein complex that is composed of an interleukin-23 alpha (p19, product of the IL23A gene) and an interleukin-12 beta (p40, product of the IL12B gene) subunit and is secreted into the extracellular space.
Source:PMID:11114383,
GOC:add,
PMID:15999093
Comment
Note that this heterodimeric cytokine utilizes the same beta subunit as IL-12.