Catalysis of the oxidative decarboxylation of pyruvate [goid 4738] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide [goid 16624] [evidence IEA]; Catalysis of the oxidative decarboxylation of pyruvate [goid 4738] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide [goid 16624] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide [goid 16624] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide [goid 16624] [evidence IEA]; Catalysis of the oxidative decarboxylation of pyruvate [goid 4738] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide [goid 16624] [evidence IEA]; Catalysis of the reaction: pyruvate + lipoamide = S-acetyldihydrolipoamide + CO2 [goid 4739] [evidence IEA]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 17353931] [evidence IPI]; Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced [goid 16491] [evidence IEA]; Catalysis of the oxidative decarboxylation of pyruvate [goid 4738] [evidence IEA]; Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide [goid 16624] [evidence IEA]