Numerical Analysis of Cell Envelope Protein Profiles of Acinetobacter Strains Classified by DNA-DNA Hybridization

1990 ◽  
Vol 13 (4) ◽  
pp. 338-344 ◽  
Author(s):  
L. Dijkshoorn ◽  
I. Tjernberg ◽  
B. Pot ◽  
M.F. Michel ◽  
J. Ursing ◽  
...  
1987 ◽  
Vol 99 (3) ◽  
pp. 659-667 ◽  
Author(s):  
L. Dijkshoorn ◽  
W. Van Vianen ◽  
J. E. Degener ◽  
M. F. Michel

SUMMARYThe usefulness of sodium dodecyl sulphate–polyacrylamide gel electrophoresis patterns of cell envelope proteins for classifying strains ofAcinetobacter calcoaceticuswas studied using 129 isolates from 16 in-patients in a teaching hospital. In 11 patients, all of the isolates from each patient exhibited the same pattern irrespective of the body site or time of isolation. The patterns of the isolates from four other patients were indistinguishable, with the exception of one isolate per patient. In the isolates from one patient five patterns were observed. In several cases isolates from different patients exhibited the same pattern. The relative frequency of some of these patterns was low. Epidemiological data were compatible with the assumption that the concurrent presence of bacteria of these patterns in the patients was the result of cross-infection. For one pattern, which was seen in seven patients, cross-infection could not be substantiated. On the basis of analysis of electrophoretic patterns in combination with epidemiological data on a number of strains it is concluded that cell-envelope protein profiles appear to be a useful aid in studying the dissemination ofAcinetobacterin the hospital environment.


1990 ◽  
Vol 271 (2) ◽  
pp. 305-308 ◽  
Author(s):  
N Martinet ◽  
S Beninati ◽  
T P Nigra ◽  
J E Folk

N1N8-Bis(gamma-glutamyl)spermidine was found in exhaustive proteolytic digests of isolated cell envelopes from human epidermis at levels comparable with those of epsilon-(gamma-glutamyl)lysine. Significantly higher than normal amounts of these compounds, particularly the bis(gamma-glutamyl)polyamine, were observed in envelopes from afflicted areas (scales) of psoriatic patients. These findings support the notions that N1N8-bis(gamma-glutamyl)spermidine, like epsilon-(gamma-glutamyl)lysine, functions in cell envelopes as an enzyme-generated protein cross-link and stabilizing force and that individuals with the chronic, recurrent skin disease, psoriasis, exhibit in involved epidermis abnormal cell-envelope-protein cross-linking.


1981 ◽  
Vol 27 (1) ◽  
pp. 98-106 ◽  
Author(s):  
F. Gavini ◽  
D. Izard ◽  
P. A. Trinel ◽  
B. Lefebvre ◽  
H. Leclerc

Phenetic (numerical analysis) and genetic (DNA–DNA hybridization) studies were carried out on strains belonging or related to the species Escherichia coli. They have shown the diversity of its phenotypes, by the presence of plasmidic characters (citrate+, urease+, H2S+, tetrathionate reductase+, raffinose+, and saccharose+). New strains related phenetically to E. coli are also individualized. They showed less than 30% DNA relatedness with E. coli. A new definition of E. coli is presented.


1995 ◽  
Vol 270 (44) ◽  
pp. 26382-26390 ◽  
Author(s):  
Eleonora Candi ◽  
Gerry Melino ◽  
Giampiero Mei ◽  
Edit Tarcsa ◽  
Soo-Il Chung ◽  
...  

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