Labeled and annotated multiple sequence alignment of COQ6. Amino acid sequences of COQ6 were analyzed as described in Materials and Methods and include Homo sapiens (NCBI accession number NP_872282.1) and homologs in Saccharomyces cerevisiae (NP_011771.1), Schizosaccharomyces pombe (NP_595401.2), Escherichia coli UbiH (NP_417383.1), Escherichia coli UbiF (NP_415195.1), Caenorhabditis elegans (NP_505415.2), Drosophila melanogaster (NP_608934.1), Danio rerio (NP_001038869.1), Mus musculus (NP_766170.2), and Bos taurus (NP_001039558.1). See KEY for descriptions of the figure annotations. The ADP Binding Fingerprint is boxed in cyan, the Cofactor Recognition motif is boxed in red, and the Ribityl Binding motif is boxed in magenta, data from [89]. FAD-binding residues are marked with blue dots, data from [49].