Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Lactococcus lactis" wg kryterium: Wszystkie pola


Wyświetlanie 1-3 z 3
Tytuł:
Overproduction and purification of the CcpA protein from Lactococcus lactis.
Autorzy:
Kowalczyk, Magdalena
Bardowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1043621.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
His-tag
cross links
dimers
CcpA
Opis:
In this work we present cloning and overexpression of lactococcal CcpA protein in Escherichia coli Xl1blue strain as a fusion with 6×His tag. A high yield of the CcpA protein was obtained when the cells were cultured in liquid medium LB with 100 Μg/ml ampicillin at 37°C and subsequently for 4 h after induction by IPTG. The procedure let us obtain 5 mg of homogenous CcpA protein. Glutaraldehyde crosslinking analysis indicated the formation of dimer or tetramer forms of the CcpA protein.
Źródło:
Acta Biochimica Polonica; 2003, 50, 2; 455-459
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In vitro DNA binding of purified CcpA protein from Lactococcus lactis IL1403
Autorzy:
Kowalczyk, Magdalena
Borcz, Barbara
Płochocka, Danuta
Bardowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1041113.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
EMSA
DNA binding
carbon catabolite repression
CcpA
competition EMSA
Opis:
During this study His-tagged CcpA protein purified under native conditions to obtain a biologically active protein was used for molecular analysis of CcpA-dependent regulation. Using electrophoretic mobility shift assays it was demonstrated that CcpA of L. lactis can bind DNA in the absence of the HPr-Ser-P corepressor and exhibits DNA-binding affinity for nucleotide sequences lacking cre sites. However, purified HPr-Ser-P protein from Bacillus subtilis was shown to slightly increase the DNA-binding capacity of the CcpA protein. It was also observed that CcpA bound to the cre box forms an apparently more stable complex than that resulting from unspecific binding. Competition gel retardation assay performed on DNA sequences from two PEP:PTS regions demonstrated that the ybhE, bglS, rheB, yebE, ptcB and yecA genes situated in these regions are most probably directly regulated by CcpA.
Źródło:
Acta Biochimica Polonica; 2007, 54, 1; 71-78
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lactococcus lactis IBB477 presenting adhesive and muco-adhesive properties as a candidate carrier strain for oral vaccination against influenza virus
Autorzy:
Radziwill-Bienkowska, Joanna
Żochowska, Dominika
Bardowski, Jacek
Mercier-Bonin, Muriel
Kowalczyk, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1039269.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Lactococcus lactis
mucin
adhesive properties
screening
mucosal vaccine
therapeutic drug delivery
Opis:
In the gastrointestinal tract (GIT), adhesion is a prerequisite for bacterial colonization. Lactococci can be used in functional food (probiotics) and health-related applications (mucosal vaccines, therapeutic drug delivery), both potentially involving adhesive properties. A candidate lactic acid bacterium for influenza antigen delivery through the GIT should display the ability to adhere. The present work probes the interactions between Lactococcus lactis and mucins using pig gastric mucin (PGM) as a model. Two strains were used for the optimization of the screening method for adhesion: L. lactis subsp. cremoris IBB477 persistent in the GIT of germ-free rats, and the low-adhering control strain MG1820. High adhesion to bare and mucin-coated polystyrene of IBB477 in comparison with MG1820 was observed. We searched for genetic determinants potentially involved in the adhesion/muco-adhesion of IBB477, identifying two such genes: prtP and a gene coding for a protein with MUB and MucBP domains. Based on its persistence in the GIT and adhesive properties, L. lactis IBB477 is a candidate carrier strain for expression of influenza haemagglutinin (HA) protein for induction of mucosal immune response.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 603-607
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies