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TitleStructural and biochemical analyses of the nucleosome containing Komagataella pastoris histones.
Journal, issue, pagesJ Biochem, Vol. 172, Issue 2, Page 79-88, Year 2022
Publish dateJul 25, 2022
AuthorsYutaro Fukushima / Suguru Hatazawa / Seiya Hirai / Tomoya Kujirai / Haruhiko Ehara / Shun-Ichi Sekine / Yoshimasa Takizawa / Hitoshi Kurumizaka /
PubMed AbstractKomagataella pastoris is a methylotrophic yeast that is commonly used as a host cell for protein production. In the present study, we reconstituted the nucleosome with K. pastoris histones and ...Komagataella pastoris is a methylotrophic yeast that is commonly used as a host cell for protein production. In the present study, we reconstituted the nucleosome with K. pastoris histones and determined the structure of the nucleosome core particle by cryogenic electron microscopy. In the K. pastoris nucleosome, the histones form an octamer and the DNA is left-handedly wrapped around it. Micrococcal nuclease assays revealed that the DNA ends of the K. pastoris nucleosome are somewhat more accessible, as compared with those of the human nucleosome. In vitro transcription assays demonstrated that the K. pastoris nucleosome is transcribed by the K. pastoris RNA polymerase II (RNAPII) more efficiently than the human nucleosome, while the RNAPII pausing positions of the K. pastoris nucleosome are the same as those of the human nucleosome. These results suggested that the DNA end flexibility may enhance the transcription efficiency in the nucleosome but minimally affect the nucleosomal pausing positions of RNAPII.
External linksJ Biochem / PubMed:35485963
MethodsEM (single particle)
Resolution3.54 Å
Structure data

32591

7wlr

EMDB-32591, PDB-7wlr:
Cryo-EM structure of the nucleosome containing Komagataella pastoris histones
Method: EM (single particle) / Resolution: 3.54 Å

Source
  • komagataella pastoris (fungus)
  • synthetic construct (others)
KeywordsGENE REGULATION/DNA / Chromatin / Nucleosome / Komagataella pastoris / Histone H2A / Histone H2B / Histone H3 / Histone H4 / DNA / Epigenetic / Gene regulation / cryo-EM / GENE REGULATION-DNA complex

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