Number of Bacteriochlorophyll molecules in chromatophore

Value 4700 Unitless Range: ±1300 Unitless
Organism Bacteria Rhodobacter sphaeroides
Reference Saphon S, Jackson JB, Lerbs V, Witt HT. The functional unit of electrical events and phosphorylation in chromatophores from Rhodopseudomonas sphaeroides. Biochim Biophys Acta. 1975 Oct 10 408(1):58-66.PubMed ID1080674
Method From electron micrographs of chromatophores from Rhodopseudomonas spaeroides the estimated bacteriochlorophyll per chromatophore was estimated.
Comments The chromatophore count, shown graphically in Fig. 1 gives a mean ratio of 4700+-1300 bacteriochlorophyll molecules per vesicle. This value compares favourably with a theoretical estimate of 3600-18 000 bacteriochlorophyll per vesicle based on spectroscopic observations of the chromatophore carotenoid shift [7].
Entered by Uri M
ID 104485