scholarly journals Involvement of Heme in Colony Spreading of Staphylococcus aureus

2020 ◽  
Vol 11 ◽  
Author(s):  
Chao-Chin Liu ◽  
Mei-Hui Lin
2011 ◽  
Vol 51 (3) ◽  
pp. 178-185 ◽  
Author(s):  
Tomofumi Ueda ◽  
Chikara Kaito ◽  
Yosuke Omae ◽  
Kazuhisa Sekimizu

2006 ◽  
Vol 189 (6) ◽  
pp. 2553-2557 ◽  
Author(s):  
Chikara Kaito ◽  
Kazuhisa Sekimizu

ABSTRACT Wild-type Staphylococcus aureus rapidly expands on the surface of soft agar plates. The rates of expansion and the shapes of the resultant giant colonies were distinct for different strains of laboratory stocks and clinical isolates. The colony spreading abilities did not correlate with the biofilm-forming abilities in these strains. Insertional disruption of the dltABCD operon, which functions at the step of d-alanine addition to teichoic acids, and of the tagO gene, which is responsible for the synthesis of wall teichoic acids, decreased the colony spreading ability. The results indicate that wall teichoic acids and d-alanylation of teichoic acids are required for colony spreading.


PLoS ONE ◽  
2016 ◽  
Vol 11 (10) ◽  
pp. e0164523 ◽  
Author(s):  
Hayato Kizaki ◽  
Yosuke Omae ◽  
Fumiaki Tabuchi ◽  
Yuki Saito ◽  
Kazuhisa Sekimizu ◽  
...  

PLoS ONE ◽  
2012 ◽  
Vol 7 (9) ◽  
pp. e44646 ◽  
Author(s):  
Eleni Tsompanidou ◽  
Emma L. Denham ◽  
Mark J. J. B. Sibbald ◽  
Xiao-mei Yang ◽  
Jolien Seinen ◽  
...  

PLoS ONE ◽  
2008 ◽  
Vol 3 (12) ◽  
pp. e3921 ◽  
Author(s):  
Chikara Kaito ◽  
Yosuke Omae ◽  
Yasuhiko Matsumoto ◽  
Makiko Nagata ◽  
Hiroki Yamaguchi ◽  
...  

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e97670 ◽  
Author(s):  
Yosuke Omae ◽  
Kazuhisa Sekimizu ◽  
Chikara Kaito

2010 ◽  
Vol 193 (5) ◽  
pp. 1267-1272 ◽  
Author(s):  
E. Tsompanidou ◽  
M. J. J. B. Sibbald ◽  
M. A. Chlebowicz ◽  
A. Dreisbach ◽  
J. W. Back ◽  
...  

Author(s):  
Masaatsu Koike ◽  
Koichi Nakashima ◽  
Kyoko Iida

Penicillin exerts the activity to inhibit the peptide cross linkage between each polysaccharide backbone at the final stage of wall-peptidoglycan biosynthesis of bacteria. Morphologically, alterations of the septal wall and mesosome in gram-positive bacteria, which were occurred in early time after treatment with penicillin, have been observed. In this experiment, these alterations were cytochemically investigated by means of silver-methenamine staining after periodate oxidation, which is applied for detection of localization of wall mucopolysaccharide.Staphylococcus aureus strain 209P treated with 100 u/ml of penicillin G was divided into two aliquotes. One was fixed by Kellenberger-Ryter's OSO4 fixative at 30, 60 and 120 min after addition of the antibiotic, dehydrated through alcohol series, and embedded in Epon 812 (Specimen A). The other was fixed by 21 glutaraldehyde, dehydrated through glycolmethacrylate series and embedded in glycolmethacrylate mixture, according to Bernhard's method (Specimen B).


Author(s):  
Margaret Hukee

Gold labeling of two antigens (double labeling) is often done on two section surfaces separated by section thickness. Whether labeling is done on both sides of the same section or on two parallel surfaces separated by section thickness (PSSST), comparable results are dependent on an equal number of epitopes being exposed at each surface. We propose a method to study protein labeling within the same field of proteins, by examining two directly adjacent surfaces that were split during sectioning. The number of labeling sites on adjacent surfaces (AS) were compared to sites on PSSST surfaces in individual bacteria.Since each bacteria needed to be recognizable in all three section surfaces, one-hole grids were used for labeling. One-hole grids require a supporting membrane and excessive handling during labeling often ruptures the membrane. To minimize handling, a labeling chamber was designed that is inexpensive, disposable, minimizes contamination, and uses a minimal amount of solution.


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