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Sökning: WFRF:(Schelin Cecilia)

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1.
  • Alkhalili, Rawana N., et al. (författare)
  • Antimicrobial protein candidates from the thermophilic Geobacillus sp. Strain ZGt-1 : Production, proteomics, and bioinformatics analysis
  • 2016
  • Ingår i: International Journal of Molecular Sciences. - : MDPI AG. - 1661-6596 .- 1422-0067. ; 17:8
  • Tidskriftsartikel (refereegranskat)abstract
    • A thermophilic bacterial strain, Geobacillus sp. ZGt-1, isolated from Zara hot spring in Jordan, was capable of inhibiting the growth of the thermophilic G. stearothermophilus and the mesophilic Bacillus subtilis and Salmonella typhimurium on a solid cultivation medium. Antibacterial activity was not observed when ZGt-1 was cultivated in a liquid medium; however, immobilization of the cells in agar beads that were subjected to sequential batch cultivation in the liquid medium at 60 °C showed increasing antibacterial activity up to 14 cycles. The antibacterial activity was lost on protease treatment of the culture supernatant. Concentration of the protein fraction by ammonium sulphate precipitation followed by denaturing polyacrylamide gel electrophoresis separation and analysis of the gel for antibacterial activity against G. stearothermophilus showed a distinct inhibition zone in 15-20 kDa range, suggesting that the active molecule(s) are resistant to denaturation by SDS. Mass spectrometric analysis of the protein bands around the active region resulted in identification of 22 proteins with molecular weight in the range of interest, three of which were new and are here proposed as potential antimicrobial protein candidates by in silico analysis of their amino acid sequences. Mass spectrometric analysis also indicated the presence of partial sequences of antimicrobial enzymes, amidase, and DD-carboxypeptidase.
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2.
  • Kjellbom, Per, et al. (författare)
  • Cytochrome P-450/420 in plant plasma membranes : a possible component of the blue-light-reducible flavoprotein-cytochrome complex
  • 1985
  • Ingår i: Photochemistry and Photobiology. - : Wiley. - 0031-8655 .- 1751-1097. ; 42:6, s. 779-783
  • Tidskriftsartikel (refereegranskat)abstract
    • Carbon monoxide difference spectra and pyridine binding spectra indicate the presence of cytochrome P-450/420 in plasma membranes from cauliflower inflorescences. Mild lithium dodecylsulfate polyacrylamide gel electrophoresis shows only one heme staining band in the plasma membrane fraction at an apparent molecular weight of 93 kiloDalton. This band is suggested to be due to a cytochrome P-450/420 dimer, in view of the known molecular weights of animal cytochromes P-450/420. The plasma membrane-bound cytochrome P-450/420 is probably identical to the blue-light-reducible b-type cytochrome of plant plasma membranes, which has been inferred to have a role in photomorphogenesis.
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