Cloning and sequencing of a cDNA encoding the Rieske iron-sulfur protein of bovine heart mitochondrial ubiquinol-cytochrome c reductase

Abstract Two cDNA clones encoding bovine heart mitochondrial Rieske iron-sulfur protein were obtained by immunological screening of a bovine heart cDNA expression library in λgt11 with antiserum directed against Rieske iron-sulfur protein isolated from bovine heart mitochondrial ubiquinol-cytochrome c reductase. The cDNA inserts were 1005 and 1100 base pairs with an open reading frame of 807 base pairs which encoded a 196-amino acid mature Rieske iron-sulfur protein and a 73-amino acid presequence. The amino acid sequence of Rieske iron-sulfur protein deduced from nucleotide sequencing is the same as that obtained from protein sequencing except at residues #73 and #191 which are Ser and Asp instead of Ala and Gly, respectively.