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© Sandrine Etienne-Manneville
Photo prise à l'avant (dans la protrusion) d'astrocytes primaires de rat en migration. Marquage par immunofluorescence montrant en rouge, p150 Glued, une protéine associée aux extrémités 'plus' des microtubules et en vert la tubuline des microtubules. La photographie montre l'accumulation de p150 Glued à l'avant des cellules en migration, où la protéine pourrait participer à l'ancrage des microtubules à la membrane plasmique. Pour essayer de corriger, les dérèglements observés lors de la migration des cellules d'astrocytes tumuraux ou gliomes on cherche à connaitre les mécanismes moléculaires fondamentaux qui controlent la polarisation et la migration cellulaires.
Publication : Molekuliarnaia genetika, mikrobiologiia i virusologiia

[Cloning and detailed mapping of the fra-ymt region of the Yersinia pestis pFra plasmid]

Team: Biochemistry of Macromolecular Interactions
Member: Gouzel Karimova
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Molekuliarnaia genetika, mikrobiologiia i virusologiia - 01 Dec 1991

Cherepanov PA, Mikhaĭlova TG, Karimova GA, Zakharova NM, Ershov IuV, Volkovoĭ KI

Link to Pubmed [PMID] – 1787840

Mol. Gen. Mikrobiol. Virusol. 1991 Dec;(12):19-26

The genetical libraries of the pFra plasmid of Yersinia pestis genes were obtained by insertion into the PstI, SalGI, EcoRI, XhoI restriction sites of the cosmid vector pHC79. The immunochemical analysis of the recombinant clones has revealed the clones synthesizing the antigen Fl (fraction I) and mouse toxin (Ymt–Yersinia pestis murine toxin). The restriction analysis of the plasmids from antigen synthesizing clones has permitted to construct the detailed physical map of the fra-ymt region of the pFra plasmid the size of 22 kb. The recombinant F1 positive clones of Escherichia coli are able to form at 37 degrees C the capsule-like structure peculiar for Yersinia pestis. The antigen F1 and the mouse toxin were isolated, purified and characterized. The antigen F1 is an 1-2 Md polymer containing a 16 kDa protein subunit. The mouse toxin a 240 kDa protein consisting of 61 kDa subunits. The nucleotide sequence of ymt gene has been defined.