Małgorzata Figiel

22 posts

Małgorzata Figiel

Małgorzata Figiel

@drfigiel

Katılım Eylül 2022
86 Takip Edilen45 Takipçiler
Małgorzata Figiel
Małgorzata Figiel@drfigiel·
E. coli DRT7 provides defense against a very broad range of phages and uses a direct defense mechanism. The escape mutants of phage lambda and Bas1 that overcame this protection carried mutations in genes encoding a DNA mimic and a putative phosphoesterase, respectively.
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Małgorzata Figiel
Małgorzata Figiel@drfigiel·
Excited to share our preprint exploring the structural, biochemical and in vivo properties of DRT7/UG10 reverse transcriptases which produce dsDNA using a combination of primase and polymerase activities and provide broad-spectrum antiphage defense! biorxiv.org/content/10.648…
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Małgorzata Figiel
Małgorzata Figiel@drfigiel·
@MariuszCzC @11_Shuv_52 Finally, we deliver the first complete cryo-EM structure of a two-component recombinase composed of ICP8 annealase and UL12 alkaline nuclease. The complex was reconstituted using a model DNA with a dsDNA and 3′ ssDNA overhang.
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Małgorzata Figiel
Małgorzata Figiel@drfigiel·
I am very excited to share our recent preprint in which we are structurally investigating macromolecular complexes that contain DNA-binding proteins ICP8 of Herpes Simplex Virus 1 and BALF2 of the Epstein-Barr Virus. biorxiv.org/content/early/…
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Małgorzata Figiel
Małgorzata Figiel@drfigiel·
@MariuszCzC @11_Shuv_52 A very similar DNA conformation is observed in the crystal structures of ICP8 with 14-mer ssDNA. ICP8 subunits form dimers with a two-fold symmetry, with their DNA-binding sites facing each other and the outward-rotated bases of bound DNAs form pairs in a flexible manner.
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Małgorzata Figiel
Małgorzata Figiel@drfigiel·
@MariuszCzC @11_Shuv_52 We determined a cryo-EM structure of BALF2 bound to ssDNA at 3.2 Å resolution. The visible fragment of DNA is accommodated in a positively charged cleft. In the first four nucleotides, the base edges face the protein, but the next three bases are rotated away from the protein.
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IIMCB, Warsaw, Poland
IIMCB, Warsaw, Poland@IIMCB_Poland·
💥Congrats to @drfigiel from @IIMCB_Poland on getting new research grant financed by @NCN_PL on DNA replication process in herpesviruses‼ 👏💪This is a great success, we are so proud of! And herpesviruses - beware❗😉
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