Biosynthesis of Porphyrinoids in Rhodobacter sphaeroides

Osmoregulation in Rhodobacter sphaeroides.

Betaine (N,N,N-trimethylglycine) functioned most effectively as an osmoprotectant in osmotically stressed Rhodobacter sphaeroides cells during aerobic growth in the dark and during anaerobic growth in the light. The presence of the amino acids L-glutamate, L-alanine, or L-proline in the growth medium did not result in a significant increase in the growth rate at increased osmotic strengths. The...

Complexes of Rhodobacter sphaeroides and Rhodobacter capsulatus

Photosynthetic bacteria offer excellent experimental opportunities to explore both the structure and function of the ubiquinol-cytochrome c oxidoreductase (bcl complex). In both Rhodobacter sphaeroides and Rhodobaeter capsulatus, the bCl complex functions in both the aerobic respiratory chain and as an essential component of the photosynthetic electron transport chain. Because the bc~ complex i...

Control of photosystem formation in Rhodobacter sphaeroides.

Postgenomic adventures with Rhodobacter sphaeroides.

This review describes some of the recent highlights taken from the studies of Rhodobacter sphaeroides 2.4.1. The review is not intended to be comprehensive, but to reflect the bias of the authors as to how the availability of a sequenced and annotated genome, a gene-chip, and proteomic profile as well as comparative genomic analyses can direct the progress of future research in this system.

The Lipoprotein and Peptidoglycan of Rhodobacter sphaeroides

The lipoprotein-peptidoglycan complex (rigid layer) from Rhodobacter sphaeroides was iso­ lated. Treatm ent of the complex with N.O-diacetyl-muramidase cleaved off from the rigid layer the lipoprotein moiety with covalently bound peptidoglycan-fragments. The lipoprotein with the bound fragments showed a broad single band (M r about 19,000) on SDS-polyacrylamide gels and had an isoelectric point...