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Wyświetlanie 1-3 z 3
Tytuł:
Prokaryotic toxin-antitoxin systems - the role in bacterial physiology and application in molecular biology
Autorzy:
Bukowski, Michal
Rojowska, Anna
Wladyka, Benedykt
Powiązania:
https://bibliotekanauki.pl/articles/1039939.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
bacteria physiology
toxin-antitoxin systems
environmental stress conditions
antibiotic resistance
Opis:
Bacteria have developed multiple complex mechanisms ensuring an adequate response to environmental changes. In this context, bacterial cell division and growth are subject to strict control to ensure metabolic balance and cell survival. A plethora of studies cast light on toxin-antitoxin (TA) systems as metabolism regulators acting in response to environmental stress conditions. Many of those studies suggest direct relations between the TA systems and the pathogenic potential or antibiotic resistance of relevant bacteria. Other studies point out that TA systems play a significant role in ensuring stability of mobile genetic material. The evolutionary origin and relations between various TA systems are still a subject of a debate. The impact of toxin-antitoxin systems on bacteria physiology prompted their application in molecular biology as tools allowing cloning of some hard-to-maintain genes, plasmid maintenance and production of recombinant proteins.
Źródło:
Acta Biochimica Polonica; 2011, 58, 1; 1-9
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A systematic investigation of the stability of green fluorescent protein fusion proteins
Autorzy:
Janczak, Monika
Bukowski, Michał
Górecki, Andrzej
Dubin, Grzegorz
Dubin, Adam
Wladyka, Benedykt
Powiązania:
https://bibliotekanauki.pl/articles/1038973.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
crystallography
fusion protein
recombinant protein
toxin-antitoxin system
Opis:
X-ray crystallography provides important insights into structure-function relationship in biomolecules. However, protein crystals are usually hard to obtain which hinders our understanding of multiple important processes. Crystallization requires large amount of protein sample, whereas recombinant proteins are often unstable or insoluble. Green fluorescent protein (GFP) fusion is one of the approaches to increase protein synthesis, solubility and stability, facilitating crystallization. In this study we analyze the influence of the linker length, composition and the position of GFP relative to the fusion partner on the fusion protein production and stability. To this end, multiple constructs of enzymatically impaired variant of PemKSa toxin from Staphylococcus aureus CH91 fused to GFP were generated. Fusion protein production in Escherichia coli was evaluated. The proteins were purified and their stability tested. PemKSa-α14aa-GFP fusion provided best production and stability. Obtained results demonstrate the importance of optimization of fusion protein construct, including linker selection and the order of fusion partners, in obtaining high quantities of stable protein for crystallization.
Źródło:
Acta Biochimica Polonica; 2015, 62, 3; 407-411
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Daptomycin-resistant Staphylococcus pettenkoferi of human origin
Autorzy:
Savini, Vincenzo
Kosecka, Maja
Siegwart, Ed
Marrollo, Roberta
Polilli, Ennio
Palmieri, Dalia
Fazii, Paolo
Carretto, Edoardo
Międzobrodzki, Jacek
Bukowski, Michal
Powiązania:
https://bibliotekanauki.pl/articles/1038817.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
daptomycin resistance
coagulase-negative staphylococci
Staphylococcus pettenkoferi
Klebsiella pneumoniae
Opis:
The importance of nosocomial infections caused by coagulase-negative staphylococci is constantly growing. The threat primarily affects immunocompromised patients, the elderly and neonates, particularly after invasive surgery. The problem is fundamentally exacerbated by expanding antibacterial drug resistance. A case report is presented of an 86-year-old patient who underwent a ruptured abdominal aortic aneurysm surgery and developed septicaemia upon surgical wound infection. The causal agent was likely a carbapenem-resistant Klebsiella pneumoniae, however, daptomycin-resistant Staphylococcus pettenkoferi was identified in blood cultures in the absence of daptomycin treatment. To the authors' knowledge, the case study presented is the first published episode of daptomycin-resistant S. pettenkoferi strain.
Źródło:
Acta Biochimica Polonica; 2016, 63, 2; 297-301
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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