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Ayushi Gupta, Swechha Mishra, Sangeeta Singh, Sonali Mishra
OBJECTIVES: The effectiveness of various ligands against the protein structure of IcaA of the IcaABCD gene locus of Staphylococcus aureus were examined using the approach of structure based drug designing in reference with the protein's efficiency to form biofilms. RESULTS: Four compounds CID42738592, CID90468752, CID24277882, and CID6435208 were secluded from a database of 31,242 inhibitory ligands on the justification of the evaluated values falling under the four - tier structure based virtual screening...
June 2, 2017: Microbial Pathogenesis
Josephine C Moran, Malcolm J Horsburgh
Staphylococcus epidermidis Tü3298 is a frequently used laboratory strain, known for its production of epidermin and absence of the icaABCD operon. We report the whole-genome sequence of this strain, a 2.5-kb genome containing 2,332 genes.
2016: Genome Announcements
Mohsen Mirzaee, Shahin Najar-Peerayeh, Mehrdad Behmanesh, Mahdi Forouzandeh Moghadam
The adherence ability and biofilm production are the characteristic of enhanced virulence among isolates of vancomycin-intermediate Staphylococcus aureus (VISA) strains. Although biofilm-forming properties have been well demonstrated in S. aureus, they still remain unclear among the recently emerged types of VISA strains. The aim of this study was to investigate correlations between the distribution of genes encoding staphylococcal microbial surface components which recognise adhesive matrix molecules (MSCRAMMs), the surface protein A (Spa) types, MLST types and the ability of VISA strains to biofilm formation...
May 2015: Current Microbiology
Kyeho Shin, Yuna Yun, Sungwon Yi, Hyun Gee Lee, Jun-Cheol Cho, Kyung-Do Suh, Jooyoung Lee, Jiyong Park
BACKGROUND: Staphylococcus aureus produces various toxins and enzymes, and its presence can exacerbate skin conditions. Previous studies have shown that S. aureus is involved in skin deterioration, even in normal tissue. Biofilm strains show much greater resistance to antimicrobial agents and therefore require a much higher concentration of biocide than planktonic counterparts. OBJECTIVE: As such, alternative strategies and more effective therapeutic agents against biofilm-producing S...
August 2013: Journal of Dermatological Science
Sünje Johanna Pamp, Dorte Frees, Susanne Engelmann, Michael Hecker, Hanne Ingmer
In Bacillus subtilis, Spx was recently characterized as a novel type of global regulator whose activity is regulated by the redox status of the cells. In the present study, we demonstrate that inactivation of Spx in the important pathogen Staphylococcus aureus renders the cells hypersensitive to a wide range of stress conditions including high and low temperature, high osmolarity, and hydrogen peroxide. Moreover, growth was restricted under nonstress conditions. Two-dimensional gel electrophoresis revealed that the proteome of the spx mutant differs substantially from the proteome of wild-type cells, supporting the finding that Spx is also a global regulator in S...
July 2006: Journal of Bacteriology
Yoshikane Itoh, Xin Wang, B Joseph Hinnebusch, James F Preston, Tony Romeo
Polymeric beta-1,6-N-acetyl-D-glucosamine (poly-beta-1,6-GlcNAc) has been implicated as an Escherichia coli and Staphylococcus epidermidis biofilm adhesin, the formation of which requires the pgaABCD and icaABCD loci, respectively. Enzymatic hydrolysis of poly-beta-1,6-GlcNAc, demonstrated for the first time by chromatography and mass spectrometry, disrupts biofilm formation by these species and by Yersinia pestis and Pseudomonas fluorescens, which possess pgaABCD homologues.
January 2005: Journal of Bacteriology
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