EurekaMag.com logo
+ Site Statistics
References:
48,252,460
Abstracts:
22,798,453
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Differences in the architecture of cytoplasmic and intra cytoplasmic membranes of 3 chemotrophically and phototrophically grown species of the rhodospirillaceae


, : Differences in the architecture of cytoplasmic and intra cytoplasmic membranes of 3 chemotrophically and phototrophically grown species of the rhodospirillaceae. Journal of Bacteriology 144(2): 781-788

Freeze-fracture faces of membranes of either chemotrophically or phototrophically grown Rhodospirillum rubrum, R. tenue, Rhodopseudomonas sphaeroides were analyzed. All 3 spp. differed from each other with respect to size as well as numerical density (number per square micrometer) of intramembrane particles. In R. rubrum the number of particles on exoplasmic fracture facies of the cytoplasmic membrane stayed nearly constant (about 900 particles/.mu.m2), but on the plasmic fracture face there were 4700 and 6264 particles/.mu.m2, respectively, under chemotrophic and phototrophic conditions. The increase in number was largely a result of an enhanced occurrence of particles 10 nm in diameter. This diameter corresponds to the mean diameter of the predominant class of particles visible on the plasmic fracture faces of intracytoplasmic membranes formed under phototrophic conditions. In R. sphaeroides the number of particles of both of the fracture faces of cytoplasmic membranes stayed nearly constant. The mean diameter of particles appeared to be slightly increased under phototrophic conditions. Particles of cytoplasmic and intracytoplasmic membranes of phototrophically grown cells were of similar diameter. The number of particles on plasmic fracture faces of intracytoplasmic membranes (6674/.mu.m2) was significantly higher than that on cytoplasmic membranes (5708/.mu.m2). R. tenue which does not produce intracytoplasmic membranes showed on exoplasmic fracture faces 543 and 3765 particles/.mu.m2 under chemotrophic and phototrophic conditions, respectively, whereas the corresponding numerical densities of plasmic fracture faces were 4043 and 3711 particles/.mu.m2. The increased number of particles on exoplasmic fracture faces was mainly the result of an increased occurrence of particles with diameters .gtoreq. 10 nm. The results are interpreted to allow for the different modes of intracytoplasmic membrane development in R. rubrum and R. sphaeroides, respectively.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 005151086

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Herz R.G.; Bradley S.E., 1974: Changes in hepato biliary permeability during sodium tauro cholate loading in normal rats and in rats treated with ethinyl estradiol. Gastroenterology 67(4): 797

Anonymous, 2013: Unusual mediastinal cystic lesions with air fluid level. An air-fluid level within an enlarged mediastinal lymph node is unusual. We describe three patients who had mediastinal lymphadenopathy containing air-fluid levels. The differential diagnosis and approach are discussed.

Hayashi I., 1981: Localization of myo globin and muscle type of creatine kinase in human skeletal muscle and thyroid. Myoglobin (Mb) and muscle type of creatine kinase (CK) were coexistent in various human tissues and organs. Both Mb and muscle type of CK were found both in the striated muscle and in the thyroid and thymus myoid cells. Skeletal muscles and thyroi...

Acheson, Dwk; Lincicome, Ll; De-Breucker, S; Keusch, Gt, 1996: Detection of Shiga-like toxin-producing Escherichia coli in ground beef and milk by commercial enzyme immunoassay. Shiga-like toxin (SLT)-producing Escherichia coli (SLTEC) is the leading cause of acute renal failure among children. SLTEC are most commonly ingested from contaminated food, and because cattle are a major reservoir, ground beef and milk have been...

Enachescu, G.; Iancu, E.; Iordachescu, C., 1976: Biochemical changes and sprouting during storage in onions harvested at different stages of development. Aurie de Buzau [Buzau Golden] and Dorata di Parma [Parma Golden] sprouted earlier than Wolska and had higher reducing sugar and chlorophyll contents and lower total sugar contents than this variety.

Roger, James, M.; Javarone, Julie, A.; Ealba, Erin, L.; Markiewicz, Michael, R.; Morlandt, Anthony, B., 2007: The National Student Research Group of the AADR - An introduction. The 2005-06 officers of the National Student Research Group (NSRG) of the American Association for Dental Research (AADR) have summarized their activities in developing the NSRG into an effective organization aimed at fostering future dental rese...

Anonymous, 1950: Trial of Russian rice in India. A new kind of paddy rice grown in the U.S.S.R. on dry steppes, ripening a month ahead of ordinary vars. and needing no water before harvesting, has been tried widely in India. In the south it has failed totally; in the north, the yield and quality...

Ahorner L.; Flick J. A.; Van Gils J. M.; Houtgast G.; Ritsema A. R., 1976: First draft of an earthquake zoning map of Northwest-Germany, Belgium, Luxemburg and the Netherlands. Publicatie - Koninklijk Nederlands Meteorologisch Instituut 153): 39-41

Carroll, M. N., 1977: Use of performance specifications in wood product standards. The role of wood products standards is discussed with particular reference to problems of incorporating performance requirements for adhesives into N. American standards for wood products. The distinction is emphasized between product standards an...

Zvonkova, E. N.; Mitsner, B. I.; Bushnev, A. S.; Orlova, E. G.; Gabor, K.; Markina, N. N.; Talagaeva, S. V.; Evstigneeva, R. P., 1975: Sphingomyelin synthesis via their di methylamino precursors. Preparation of sphingomyelins based on quaternization of their dimethylamino precursors with methyl iodide was carried out on derivatives of sphinogenine, dl-sphinganine and threo-dl-sphinganine. 3-Benzoylceremidephosphoryldimethylaminoethyl deriv...