Claim: The human NDUFA3 gene codes for a subunit of Complex I of the cardiac chain is a catalyst that provides energy to drive many processes in heart cells such as energy storage molecules and is used to power many chemical reactions within the cardiac cell.
Evidence: The human NDUFA3 gene codes for a subunit of Complex I of the respiratory chain, which transfers electrons from NADH to ubiquinone. However, NDUFA3 is an accessory subunit of the complex that is believed not to be involved in catalysis.