Northern blot analyses of RNA extracted from T. maritima cells grown on glucose (Glu), maltose (Mal), starch (Sta), lactose (Lac), trehalose (Tre), and guar gum (Gum). Blotted RNAs were visualized with labeled hybridization probes for malE1 and malE2 as indicated. Equal amounts of RNA were applied to each lane as confirmed by a final hybridization with a labeled probe for the 16S rRNA transcript. The migration of RNA markers (sizes in kilobases) is indicated.