2021-11-17 REL RCSB RCSB RCSB 2021-03-16 2021-09-29 2021-09-29 2021-11-17 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 1R35GM133611 United States National Science Foundation (NSF, United States) 1942049 United States cryo-EM density map of canonical nucleosome Lewis T Sokolova V Ng H Tan D Lewis TS Sokolova V Jung H Ng H Tan D Structural basis of chromatin regulation by histone variant H2A.Z. Nucleic Acids Res. UK 49 11379 11391 2021 34643712 doi:10.1093/nar/gkab907 1362-4962 0389 NARHAD EMD-23632 associated EM volume Nucleosome containing canonical histones H2A, H2B, H3 and H4 Nucleosome containing canonical histones H2A, H2B, H3 and H4 0 1 2 3 4 5 Xenopus laevis Escherichia coli BL21(DE3) Histones H2A 1 1 Xenopus laevis Escherichia coli BL21 167-bp 601 Widom DNA sequence 1 5 unidentified Escherichia coli DH5[alpha] Histone H2B 1 2 Xenopus laevis Escherichia coli BL21(DE3) Histone H3 1 3 Xenopus laevis Escherichia coli BL21(DE3) Histone H4 1 4 Xenopus laevis Escherichia coli BL21(DE3) Histone H2A Xenopus laevis Escherichia coli BL21(DE3) LEVO MSGRGKQGGKTRAKAKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGRVTIAQGGVLPNIQSVLLPKKTESSKSAKSK Histone H2B Xenopus laevis Escherichia coli BL21(DE3) LEVO MPDPAKSAPAAKKGSKKAVTKTQKKDGKKRRKSRKESYAIYVYKVLKQVHPDTGISSKAM SIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVT KYTSAK Histone H3 Xenopus laevis Escherichia coli BL21(DE3) LEVO MARTKQTARKSTGGKAPRKQLATKAARKSAPATGGVKKPHRYRPGTVALREIRRYQKSTE LLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCGIHAKRVTI MPKDIQLARRIRGERA Histone H4 Xenopus laevis Escherichia coli BL21(DE3) LEVO MSGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLK VFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG 167-bp 601 Widom DNA sequence unidentified ATCCCGCCCTGGAGAATCCCGGTGCCGAGGCCGCTCAATTGGTCGTAGACAGCTCTAGCACCGCTTAAACGCACGTACGCGCTGTCCCCCGCGTTTTAACCGCCAAGGGGATTACTCCCTAGTCTCCAGGCACGTGTCAGATATATACATCCTGTGCATGACTAGAT DNA singleParticle particle 1 8.0 2.5 NaCl sodium chloride 10.0 Tris 2.0 EDTA Ethylenediaminetetraacetic acid 5.0 BME beta-mercaptoethanol Quantifoil R1.2/1.3 COPPER 400 CARBON HOLEY GLOW DISCHARGE AIR ETHANE 100 277.15 FEI VITROBOT MARK IV
Grid was blotted for 5 seconds before plunge freezing.
FEI TALOS ARCTICA FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 100.0 2.7 0.9 2.5 92000.0 123811.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN FEI FALCON III (4k x 4k) COUNTING 2 1970 60.0 33.0 1 132785 CTFFIND 4.1.14
Ab initio reconstruction in cryoSPARC was performed to build the initial model.
 1 C2 BACK PROJECTION 3.8 FSC 0.143 CUT-OFF RELION 3.1.0 373183 MAXIMUM LIKELIHOOD RELION 3.1.0 MAXIMUM LIKELIHOOD RELION 3.1.0 5 RELION 3.1.0 emd_23632.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 200 200 200 -100 -100 -100 200 200 200 224.0 224.0 224.0 90.0 90.0 90.0 X Y Z -0.12697217 0.18969901 0.0007659111 0.007749875 1.12 1.12 1.12 0.0341 AUTHOR Canonical nucleosome