FIG. 5.
Cellular levels of HoxA, HypD, and HypX in strains of A. eutrophus under different growth conditions. Cultures of the parental strain A. eutrophus H16 (wild type [wt]) and of the isogenic derivatives HF457 (hoxTΩ) and HF491 (ΔPMBH) were grown under hydrogenase-repressing (SN) and hydrogenase-derepressing (FGN) conditions. Western immunoblots were stained with antisera directed against HoxA (A), HypD (B), and HypX (C). Arrows indicate immunoreactive species. Positions of molecular mass standards are given at the right.