Phylogram and sequence alignment of cyanobacterial nucleotidyl transferases. The phylogram of the nucleotidyl transferases from Synechocystis sp. PCC 6803, Anabaena sp. PCC 7120, Arthrospira platensis NIES-39, Synechococcus sp. PCC 7002, Thermosynechococcus elongatus BP-1, Nostoc punctiforme ATCC 29133, and Gloeobacter violaceus PCC 7421 and the proteobacterium Yersinia intermedia (boxed) nucleotidyl transferase sequence. Families of UDP-Glc PPase and UDP-GlcNAc PPase are highlighted with a gray background.