Fig. 5.

Domain and subunit composition of representative Dha kinases and their associated transcription regulators. The catalytic Dha kinase subunits are framed (dotted line). Homologous subunits and domains are labeled as follows: DhaK-like (slanted lines) and DhaL-like (vertical lines). The IIA folds are gray and the core fold of DhaK is black. The invariant His are indicated by white dots (phosphorylation sites) and white squares (hydrogen bonding of Dha). Established and putative transcription regulators are indicated as open arrows. ManX is a subunit (IIAB^Man) of the mannose transporter. The horizontal alignment of the proteins reflects the organization of the respective operons. Functionally characterized proteins are indicated by their gene names, proteins for which a function is suggested are indicated by their SWISS-PROT entry number.