Reactome: A Curated Pathway Database

Synthesis of PB1-F2 (R-HSA-192704)

Species Homo sapiens


For most influenza A strains (such as PR8), the PB1 mRNA segment produces a second protein, PB1-F2, from the +1 open reading frame (Chen, 2001). PB1-F2 is a pro-apoptotic, mitochondria-localized protein (Chen, 2001; Gibbs, 2003) that oligomerizes (Bruns, 2007) and sensitizes cells to death in concert with the mitochondrial ANT3 and VDAC proteins (Zamarin, 2005).

Locations in the PathwayBrowser
Additional Information
Compartment cytosol
Components of this entry
Input entries
Output entries
Catalyst Activity
PhysicalEntity Activity Active Units
80S ribosome translation elongation factor activity (0003746)
Name Identifier Synonyms
influenza 8469 [Influenza with other manifestations (disorder), Influenza with other manifestations NOS (disorder), flu, Influenza with other manifestations, Influenza with non-respiratory manifestation (disorder), influenza with non-respiratory manifestation]
Literature References
pubMedId Title Journal Year
11726970 A novel influenza A virus mitochondrial protein that induces cell death Nat Med 2001