Second, and more interesting, the oxidative phosphorylation chain, including seven genes (ATP5C1, ATP6AP1, ATP6V1H, COX5B, COX6B1, NDUFA1, and UQCRC1) (Figure S1), five of them shared with Huntington's and Parkinson's disease KEGG categories. The gene discussed is UQCRC1; the disease is Parkinson disease.