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- PDB-9ii7: RNA polymerase II elongation complex stalled at SHL(-1) of the nu... -

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Basic information

Entry
Database: PDB / ID: 9ii7
TitleRNA polymerase II elongation complex stalled at SHL(-1) of the nucleosome containing histone variant H2A.B
Components
  • (DNA (198-MER)) x 2
  • (DNA-directed RNA polymerase ...) x 3
  • (DNA-directed RNA polymerases I, II, and III subunit ...) x 2
  • (RNA polymerase II ...) x 4
  • (RNA polymerase subunit ABC10- ...) x 2
  • (Transcription elongation factor ...) x 3
  • Histone H2A-Bbd type 2/3
  • Histone H2B type 1-J
  • Histone H3.3
  • Histone H4
  • RNA (5'-R(P*CP*CP*CP*GP*GP*UP*GP*UP*CP*UP*UP*GP*GP*GP*UP*G)-3')
  • RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III
KeywordsTRANSCRIPTION / Transcription-DNA-RNA COMPLEX / RNAPII
Function / homology
Function and homology information


regulation of septum digestion after cytokinesis / siRNA-mediated pericentric heterochromatin formation / negative regulation of chromosome condensation / Barr body / DSIF complex / : / RPB4-RPB7 complex / inner kinetochore / pericentric heterochromatin formation / chromatin-protein adaptor activity ...regulation of septum digestion after cytokinesis / siRNA-mediated pericentric heterochromatin formation / negative regulation of chromosome condensation / Barr body / DSIF complex / : / RPB4-RPB7 complex / inner kinetochore / pericentric heterochromatin formation / chromatin-protein adaptor activity / transcription elongation factor activity / muscle cell differentiation / oocyte maturation / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / nucleosomal DNA binding / termination of RNA polymerase II transcription / termination of RNA polymerase III transcription / transcription elongation-coupled chromatin remodeling / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / : / nucleus organization / transcription initiation at RNA polymerase III promoter / termination of RNA polymerase I transcription / spermatid development / transcription initiation at RNA polymerase I promoter / pericentric heterochromatin / RNA polymerase II complex binding / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / positive regulation of translational initiation / : / : / : / : / chromosome, centromeric region / : / negative regulation of tumor necrosis factor-mediated signaling pathway / : / single fertilization / negative regulation of megakaryocyte differentiation / subtelomeric heterochromatin formation / protein localization to CENP-A containing chromatin / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / RNA polymerase II core promoter sequence-specific DNA binding / transcription-coupled nucleotide-excision repair / Replacement of protamines by nucleosomes in the male pronucleus / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / translation initiation factor binding / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere organization / embryo implantation / Inhibition of DNA recombination at telomere / RNA Polymerase I Promoter Opening / Meiotic synapsis / Assembly of the ORC complex at the origin of replication / SUMOylation of chromatin organization proteins / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / transcription elongation factor complex / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / regulation of DNA-templated transcription elongation / PRC2 methylates histones and DNA / innate immune response in mucosa / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / HDMs demethylate histones / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / transcription initiation at RNA polymerase II promoter / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) / transcription elongation by RNA polymerase II / lipopolysaccharide binding / Transcriptional regulation by small RNAs / P-body / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / euchromatin / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / ribonucleoside binding / RMTs methylate histone arginines
Similarity search - Function
Spt5 C-terminal nonapeptide repeat binding Spt4 / Transcription elongation factor 1 / Transcription elongation factor 1 superfamily / Transcription elongation factor Elf1 like / Transcription initiation Spt4 / Spt4 superfamily / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Transcription elongation factor SPT5, second KOW domain ...Spt5 C-terminal nonapeptide repeat binding Spt4 / Transcription elongation factor 1 / Transcription elongation factor 1 superfamily / Transcription elongation factor Elf1 like / Transcription initiation Spt4 / Spt4 superfamily / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Transcription elongation factor SPT5, second KOW domain / Transcription elongation factor SPT5, fifth KOW domain / Transcription elongation factor SPT5, KOWx domain / Transcription elongation factor SPT5, KOW1 domain / Transcription elongation factor SPT5, fourth KOW domain / Transcription elongation factor Spt5, eukaryote / Spt5 transcription elongation factor, N-terminal / Spt5, KOW domain repeat 2 / Spt5, KOW domain repeat 3 / Spt5, KOW domain repeat 5 / Spt5 transcription elongation factor, acidic N-terminal / NGN domain, eukaryotic / Spt5, KOW domain repeat 1 / Spt5, KOW domain repeat 4 / NGN domain / Transcription elongation factor SPT5 / Early transcription elongation factor of RNA pol II, NGN section / NusG, N-terminal domain superfamily / DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb1 C-terminal repeat / RNA polymerase II, heptapeptide repeat, eukaryotic / Eukaryotic RNA polymerase II heptapeptide repeat. / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily / RNA polymerase Rpb1, domain 7 / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 / Rpb4/RPC9 superfamily / S1 domain profile. / RNA polymerase subunit Rpb4/RPC9 / RNA polymerase Rpb4 / HRDC-like superfamily / RNA polymerase Rpb7-like , N-terminal / RNA polymerase Rpb7-like, N-terminal domain superfamily / RNA polymerase subunit Rpb7-like / SHS2 domain found in N terminus of Rpb7p/Rpc25p/MJ0397 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 4 / RNA polymerase Rpb2, domain 4 / DNA-directed RNA polymerase, M/15kDa subunit / RNA polymerases M/15 Kd subunit / RNA polymerase subunit 9 / DNA-directed RNA polymerase M, 15kDa subunit, conserved site / RNA polymerases M / 15 Kd subunits signature. / DNA-directed RNA polymerase subunit/transcription factor S / : / RNA polymerase, Rpb8 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerase Rpb8 / RNA polymerase subunit 8 / RNA polymerase, Rpb5, N-terminal / RNA polymerase Rpb5, N-terminal domain superfamily / RNA polymerase Rpb5, N-terminal domain / DNA-directed RNA polymerase, subunit RPB6 / DNA-directed RNA polymerase subunit RPABC5/Rpb10 / RNA polymerases, subunit N, zinc binding site / RNA polymerase subunit RPB10 / RNA polymerases N / 8 kDa subunit / RNA polymerases N / 8 Kd subunits signature. / DNA directed RNA polymerase, 7 kDa subunit / RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 / RNA polymerase, subunit H/Rpb5, conserved site / RNA polymerases H / 23 Kd subunits signature. / RNA polymerase subunit CX / DNA-directed RNA polymerase, 30-40kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo3/Rpb3/RPAC1 / RNA polymerases D / 30 to 40 Kd subunits signature. / DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo11 / RNA polymerases L / 13 to 16 Kd subunits signature. / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / Zinc finger, TFIIS-type / Transcription factor S-II (TFIIS) / Zinc finger TFIIS-type profile. / C2C2 Zinc finger / DNA-directed RNA polymerase, RBP11-like dimerisation domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerase, subunit H/Rpb5 C-terminal / DNA-directed RNA polymerase subunit Rpo5/Rpb5 / RPB5-like RNA polymerase subunit superfamily / RNA polymerase Rpb5, C-terminal domain / Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit / DNA-directed RNA polymerase, 14-18kDa subunit, conserved site / RNA polymerases K / 14 to 18 Kd subunits signature. / S1 RNA binding domain / S1 domain
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / RNA / RNA (> 10) / Transcription elongation factor 1 homolog / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III / DNA-directed RNA polymerases I, II, and III subunit RPABC3 ...DNA / DNA (> 10) / DNA (> 100) / RNA / RNA (> 10) / Transcription elongation factor 1 homolog / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / RNA polymerase II subunit B32 / Transcription elongation factor SPT5 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / RNA polymerase II subunit B12.5 / DNA-directed RNA polymerase subunit / RNA polymerase II third largest subunit B44, part of central core / DNA-directed RNA polymerase subunit / RNA polymerase subunit ABC10-alpha / DNA-directed RNA polymerase subunit / Transcription elongation factor SPT4 / Histone H2B type 1-J / Histone H2A-Bbd type 2/3 / Histone H4 / Histone H3.3
Similarity search - Component
Biological speciesKomagataella phaffii (fungus)
synthetic construct (others)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsAkatsu, M. / Kujirai, T. / Rina, H. / Ehara, H. / Takizawa, Y. / Sekine, S. / Kurumizaka, H.
Funding support Japan, 10items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)JP20H03201 Japan
Japan Society for the Promotion of Science (JSPS)JP20H05690 Japan
Japan Society for the Promotion of Science (JSPS)JP22K15033 Japan
Japan Society for the Promotion of Science (JSPS)JP22K06098 Japan
Japan Society for the Promotion of Science (JSPS)JP23H05475 Japan
Japan Society for the Promotion of Science (JSPS)JP23K17392 Japan
Japan Society for the Promotion of Science (JSPS)JP24H02328 Japan
Japan Science and TechnologyJPMJER1901 Japan
Japan Science and TechnologyJPMJSP2108 Japan
Japan Agency for Medical Research and Development (AMED)JP24ama121009 Japan
CitationJournal: EMBO J / Year: 2025
Title: Structural basis of RNAPII transcription on the nucleosome containing histone variant H2A.B.
Authors: Munetaka Akatsu / Rina Hirano / Tomoya Kujirai / Mitsuo Ogasawara / Haruhiko Ehara / Shun-Ichi Sekine / Yoshimasa Takizawa / Hitoshi Kurumizaka /
Abstract: H2A.B is a distant histone H2A variant associated with actively transcribed regions of the genome, suggesting its positive role in promoting transcription. In the present study, we demonstrate that ...H2A.B is a distant histone H2A variant associated with actively transcribed regions of the genome, suggesting its positive role in promoting transcription. In the present study, we demonstrate that the RNA polymerase II elongation complex (EC) transcribes the nucleosome containing H2A.B more efficiently than that with canonical H2A in vitro. Our cryo-electron microscopy analysis of the H2A.B nucleosome during transcription revealed that the proximal H2A.B-H2B dimer is released from the nucleosome as the EC transcribes the proximal half of the nucleosomal DNA. This dissociation, which is not observed in the canonical H2A nucleosome, likely enhances the EC elongation efficiency in the H2A.B nucleosome. Mutational analyses suggested that the unique short C-terminal region of H2A.B alone enhances EC elongation efficiency when substituted for its counterpart in canonical H2A. Additionally, other regions of H2A.B contribute to this enhancement. These structural and biochemical findings provide new insights into the role of H2A.B in regulating gene expression.
History
DepositionJun 19, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 11, 2025Provider: repository / Type: Initial release
Revision 1.1Jul 23, 2025Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: DNA-directed RNA polymerase subunit
B: DNA-directed RNA polymerase subunit beta
C: RNA polymerase II third largest subunit B44, part of central core
D: RNA polymerase II subunit B32
E: DNA-directed RNA polymerases I, II, and III subunit RPABC1
F: RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III
G: RNA polymerase II subunit
H: DNA-directed RNA polymerases I, II, and III subunit RPABC3
I: DNA-directed RNA polymerase subunit
J: RNA polymerase subunit ABC10-beta, common to RNA polymerases I, II, and III
K: RNA polymerase II subunit B12.5
L: RNA polymerase subunit ABC10-alpha
M: Transcription elongation factor 1 homolog
N: DNA (198-MER)
P: RNA (5'-R(P*CP*CP*CP*GP*GP*UP*GP*UP*CP*UP*UP*GP*GP*GP*UP*G)-3')
T: DNA (198-MER)
V: Transcription elongation factor SPT4
W: Transcription elongation factor SPT5
a: Histone H3.3
b: Histone H4
c: Histone H2A-Bbd type 2/3
d: Histone H2B type 1-J
e: Histone H3.3
f: Histone H4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)844,87535
Polymers844,19724
Non-polymers67811
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: cross-linking
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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DNA-directed RNA polymerase ... , 3 types, 3 molecules ABI

#1: Protein DNA-directed RNA polymerase subunit / RNA polymerase II subunit Rpb1


Mass: 194107.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R4Y0, DNA-directed RNA polymerase
#2: Protein DNA-directed RNA polymerase subunit beta / RNA polymerase II subunit Rpb2


Mass: 139746.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4QZQ7, DNA-directed RNA polymerase
#9: Protein DNA-directed RNA polymerase subunit


Mass: 13612.320 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: F2QPE6

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RNA polymerase II ... , 4 types, 4 molecules CDGK

#3: Protein RNA polymerase II third largest subunit B44, part of central core / RNA polymerase II subunit Rpb3


Mass: 34216.293 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R7L2
#4: Protein RNA polymerase II subunit B32 / RNA polymerase II subunit Rpb4


Mass: 20622.980 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R2U9
#7: Protein RNA polymerase II subunit / RNA polymerase II subunit Rpb7


Mass: 18802.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R9A1
#11: Protein RNA polymerase II subunit B12.5 / RNA polymerase II subunit Rpb11


Mass: 13832.896 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R3Z5

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DNA-directed RNA polymerases I, II, and III subunit ... , 2 types, 2 molecules EH

#5: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC1 / RNA polymerase II subunit Rpb5


Mass: 24962.680 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R3P8
#8: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC3 / RNA polymerase II subunit Rpb8


Mass: 16249.220 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R273

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Protein , 5 types, 7 molecules Faebfcd

#6: Protein RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III / RNA polymerase II subunit Rpb6


Mass: 17803.588 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R1V1
#19: Protein Histone H3.3


Mass: 15360.983 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H3-3A, H3.3A, H3F3, H3F3A, PP781, H3-3B, H3.3B, H3F3B / Production host: Escherichia coli (E. coli) / References: UniProt: P84243
#20: Protein Histone H4


Mass: 11394.426 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human)
Gene: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, ...Gene: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, H4FE, HIST1H4K, H4/D, H4FD, HIST1H4L, H4/K, H4FK, HIST2H4A, H4/N, H4F2, H4FN, HIST2H4, HIST2H4B, H4/O, H4FO, HIST4H4
Production host: Escherichia coli (E. coli) / References: UniProt: P62805
#21: Protein Histone H2A-Bbd type 2/3 / H2A Barr body-deficient / H2A.Bbd


Mass: 12732.389 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H2AB2, H2AFB2, H2AB3, H2ABBD, H2AFB, H2AFB3 / Production host: Escherichia coli (E. coli) / References: UniProt: P0C5Z0
#22: Protein Histone H2B type 1-J / Histone H2B.1 / Histone H2B.r / H2B/r


Mass: 13935.239 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HIST1H2BJ, H2BFR / Production host: Escherichia coli (E. coli) / References: UniProt: P06899

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RNA polymerase subunit ABC10- ... , 2 types, 2 molecules JL

#10: Protein RNA polymerase subunit ABC10-beta, common to RNA polymerases I, II, and III / RNA polymerase II subunit Rpb10


Mass: 8554.064 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: C4R009
#12: Protein RNA polymerase subunit ABC10-alpha / RNA polymerase II subunit Rpb12


Mass: 7862.048 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Komagataella phaffii (fungus) / References: UniProt: F2QMI1

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Transcription elongation factor ... , 3 types, 3 molecules MVW

#13: Protein Transcription elongation factor 1 homolog


Mass: 12395.677 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Komagataella phaffii (fungus) / Gene: PAS_c121_0006 / Production host: Escherichia coli (E. coli) / References: UniProt: C4QZ45
#17: Protein Transcription elongation factor SPT4


Mass: 12627.260 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Komagataella phaffii (fungus) / Gene: SPT4 / Production host: Escherichia coli (E. coli) / References: UniProt: F2QTA2
#18: Protein Transcription elongation factor SPT5


Mass: 101248.188 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Komagataella phaffii (fungus) / Gene: PAS_chr3_1136 / Production host: Escherichia coli (E. coli) / References: UniProt: C4R370

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DNA chain , 2 types, 2 molecules NT

#14: DNA chain DNA (198-MER)


Mass: 61381.906 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#16: DNA chain DNA (198-MER)


Mass: 60869.977 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)

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RNA chain , 1 types, 1 molecules P

#15: RNA chain RNA (5'-R(P*CP*CP*CP*GP*GP*UP*GP*UP*CP*UP*UP*GP*GP*GP*UP*G)-3')


Mass: 5123.040 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Non-polymers , 2 types, 11 molecules

#23: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
#24: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1RNA polymerase II - nucleosome complexCOMPLEX#1-#220MULTIPLE SOURCES
2RNA polymerase IICOMPLEX#1-#131NATURAL
3HistonesCOMPLEX#19-#221RECOMBINANT
4DNACOMPLEX#14, #161RECOMBINANT
5RNACOMPLEX#151RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Komagataella phaffii (fungus)460519
23Homo sapiens (human)9606
34synthetic construct (others)32630
45synthetic construct (others)32630
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
13Escherichia coli (E. coli)562
24Escherichia coli (E. coli)562
Buffer solutionpH: 7.5
Details: 20 mM HEPES-KOH(pH7.5), 200 nM Zinc acetate, 0.1 mM TCEP-HCl
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMHEPES-KOH(pH7.5)1
2200 nMZinc acetate(CH3COO)2Zn1
30.1 mMTCEP-HCl1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: dsDNA concentration is 0.06 mg/mL. This sample contains 0.003% NP-40.
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 1.4 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 297456 / Symmetry type: POINT

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