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- PDB-7y60: Cryo-EM structure of human CAF1LC bound right-handed Di-tetrasome -

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Basic information

Entry
Database: PDB / ID: 7y60
TitleCryo-EM structure of human CAF1LC bound right-handed Di-tetrasome
Components
  • (Chromatin assembly factor 1 subunit ...) x 2
  • (Widom 601 DNA (147- ...) x 2
  • Histone H3.1
  • Histone H4
KeywordsREPLICATION
Function / homology
Function and homology information


CAF-1 complex / chromo shadow domain binding / DNA replication-dependent chromatin assembly / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine ...CAF-1 complex / chromo shadow domain binding / DNA replication-dependent chromatin assembly / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / 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 / Deposition of new CENPA-containing nucleosomes at the centromere / telomere organization / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / epigenetic regulation of gene expression / Inhibition of DNA recombination at telomere / Assembly of the ORC complex at the origin of replication / Meiotic synapsis / 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) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / HDACs deacetylate histones / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / HDMs demethylate histones / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / DNA Damage/Telomere Stress Induced Senescence / Pre-NOTCH Transcription and Translation / Meiotic recombination / Activation of anterior HOX genes in hindbrain development during early embryogenesis / RMTs methylate histone arginines / Transcriptional regulation of granulopoiesis / HCMV Early Events / structural constituent of chromatin / unfolded protein binding / nucleosome / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Factors involved in megakaryocyte development and platelet production / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / chromatin organization / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / histone binding / Oxidative Stress Induced Senescence / gene expression / Estrogen-dependent gene expression / DNA replication / chromosome, telomeric region / cadherin binding / Amyloid fiber formation / protein heterodimerization activity / DNA repair / chromatin binding / chromatin / protein-containing complex / DNA binding / RNA binding / extracellular exosome / extracellular region / nucleoplasm / identical protein binding / nucleus / membrane / cytoplasm
Similarity search - Function
Chromatin assembly factor 1 subunit B, C-terminal domain / Chromatin assembly factor complex 1 subunit p60, C-terminal / Chromatin assembly factor 1 subunit p150, N-terminal / Chromatin assembly factor 1 subunit p150, C-terminal / Chromatin assembly factor 1 subunit Cac2/CHAF1B/FAS2 / CAF1 complex subunit p150, region binding to CAF1-p60 at C-term / CAF1 complex subunit p150, region binding to PCNA / : / Chromatin assembly factor 1 subunit A / Chromatin assembly factor 1 complex p150 subunit, acidic region ...Chromatin assembly factor 1 subunit B, C-terminal domain / Chromatin assembly factor complex 1 subunit p60, C-terminal / Chromatin assembly factor 1 subunit p150, N-terminal / Chromatin assembly factor 1 subunit p150, C-terminal / Chromatin assembly factor 1 subunit Cac2/CHAF1B/FAS2 / CAF1 complex subunit p150, region binding to CAF1-p60 at C-term / CAF1 complex subunit p150, region binding to PCNA / : / Chromatin assembly factor 1 subunit A / Chromatin assembly factor 1 complex p150 subunit, acidic region / Chromatin assembly factor 1 subunit A dimerization domain / : / CAF1B/HIR1 beta-propeller domain / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Histone-fold / G-protein, beta subunit / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Histone H4 / Histone H3.1 / Chromatin assembly factor 1 subunit A / Chromatin assembly factor 1 subunit B
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsLiu, C.P. / Yu, C. / Yu, Z.Y. / Xu, R.M.
Funding support China, 10items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31991162 China
National Natural Science Foundation of China (NSFC)91853204 China
National Natural Science Foundation of China (NSFC)92153302 China
National Natural Science Foundation of China (NSFC)31300614 China
Ministry of Science and Technology (MoST, China)2019YFA0508900 China
Ministry of Science and Technology (MoST, China)2018YFE0203300 China
Ministry of Science and Technology (MoST, China)2017YFA0506600 China
Chinese Academy of SciencesXDB37010100 China
Chinese Academy of Sciences2018125 China
Chinese Academy of Sciences2017131 China
CitationJournal: Science / Year: 2023
Title: Structural insights into histone binding and nucleosome assembly by chromatin assembly factor-1.
Authors: Chao-Pei Liu / Zhenyu Yu / Jun Xiong / Jie Hu / Aoqun Song / Dongbo Ding / Cong Yu / Na Yang / Mingzhu Wang / Juan Yu / Peini Hou / Kangning Zeng / Zhenyu Li / Zhuqiang Zhang / Xinzheng ...Authors: Chao-Pei Liu / Zhenyu Yu / Jun Xiong / Jie Hu / Aoqun Song / Dongbo Ding / Cong Yu / Na Yang / Mingzhu Wang / Juan Yu / Peini Hou / Kangning Zeng / Zhenyu Li / Zhuqiang Zhang / Xinzheng Zhang / Wei Li / Zhiguo Zhang / Bing Zhu / Guohong Li / Rui-Ming Xu /
Abstract: Chromatin inheritance entails de novo nucleosome assembly after DNA replication by chromatin assembly factor-1 (CAF-1). Yet direct knowledge about CAF-1's histone binding mode and nucleosome assembly ...Chromatin inheritance entails de novo nucleosome assembly after DNA replication by chromatin assembly factor-1 (CAF-1). Yet direct knowledge about CAF-1's histone binding mode and nucleosome assembly process is lacking. In this work, we report the crystal structure of human CAF-1 in the absence of histones and the cryo-electron microscopy structure of CAF-1 in complex with histones H3 and H4. One histone H3-H4 heterodimer is bound by one CAF-1 complex mainly through the p60 subunit and the acidic domain of the p150 subunit. We also observed a dimeric CAF-1-H3-H4 supercomplex in which two H3-H4 heterodimers are poised for tetramer assembly and discovered that CAF-1 facilitates right-handed DNA wrapping of H3-H4 tetramers. These findings signify the involvement of DNA in H3-H4 tetramer formation and suggest a right-handed nucleosome precursor in chromatin replication.
History
DepositionJun 18, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 16, 2023Provider: repository / Type: Initial release
Revision 1.1Sep 6, 2023Group: Database references / Structure summary
Category: citation / citation_author ...citation / citation_author / em_entity_assembly / pdbx_database_related / struct
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _em_entity_assembly.name / _pdbx_database_related.details / _struct.title

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
G: Histone H3.1
H: Histone H4
E: Histone H3.1
F: Histone H4
I: Widom 601 DNA (147-MER)
C: Histone H3.1
D: Histone H4
A: Histone H3.1
B: Histone H4
J: Widom 601 DNA (147-MER)
K: Chromatin assembly factor 1 subunit A
L: Chromatin assembly factor 1 subunit B


Theoretical massNumber of molelcules
Total (without water)292,02012
Polymers292,02012
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 8 molecules GECAHFDB

#1: Protein
Histone H3.1


Mass: 15437.167 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: UniProt: P68431
#2: Protein
Histone H4


Mass: 11394.426 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: UniProt: P62805

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Widom 601 DNA (147- ... , 2 types, 2 molecules IJ

#3: DNA chain Widom 601 DNA (147-MER)


Mass: 45105.727 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: DNA chain Widom 601 DNA (147-MER)


Mass: 45644.070 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Chromatin assembly factor 1 subunit ... , 2 types, 2 molecules KL

#5: Protein Chromatin assembly factor 1 subunit A / CAF-1 subunit A


Mass: 47228.848 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CHAF1A / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q13111
#6: Protein Chromatin assembly factor 1 subunit B / CAF-1 subunit B


Mass: 46714.941 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CHAF1B / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q13112

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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

ComponentName: The CAF1LC bound right-handed Di-tetrasome / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5 / Details: 20 mM Hepes, pH 7.5, 50 mM NaCl and 1 mM DTT
SpecimenConc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK I / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 283 K

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TECNAI ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameCategory
7UCSF Chimeramodel fitting
9PHENIXmodel refinement
CTF correctionType: NONE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 178734 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Target criteria: Correlation coefficient
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00413135
ELECTRON MICROSCOPYf_angle_d0.67318654
ELECTRON MICROSCOPYf_dihedral_angle_d30.7763277
ELECTRON MICROSCOPYf_chiral_restr0.0392131
ELECTRON MICROSCOPYf_plane_restr0.0051602

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