Atp5f1a Conditional Knockout mouse models

Oxidative phosphorylation stalls without Atp5f1a, the mouse ortholog of human ATP5F1A, which encodes the alpha subunit present in three copies within the alpha3beta3 hexamer forming the soluble F1 catalytic head of mitochondrial ATP synthase. Alpha subunits provide noncatalytic nucleotide sites and the structural walls against which the rotating gamma central stalk imposes sequential conformational changes on catalytic beta subunits, so alpha is indispensable for rotary coupling rather than merely accessory. De novo dominant and recessive human variants cause encephalopathy, hypotonia, and lactic acidosis with reduced complex V holoenzyme, phenotypes a targeted missense knockin reproduces far better than deletion. No nuclear paralog covers this function, and complete loss of complex V catalysis is incompatible with development, so conditional floxed alleles are mandatory for postnatal work. Combine Ckmm-Cre, Myh6-MerCreMer, or Nes-Cre with blue native PAGE, oligomycin sensitive respiration, and cristae ultrastructure as endpoints.

Conditional deletion of Atp5f1a limits the genetic change to the lineage you choose. That helps in oncology, immunology, and metabolic work where systemic loss would muddy the read. After you confirm Cre specificity, crossing to Atp5f1a floxed stock yields usable cohorts.