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- PDB-4z2m: Crystal structure of human SPT16 Mid-AID/H3-H4 tetramer FACT Hist... -
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Basic information
Entry | Database: PDB / ID: 4z2m | ||||||
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Title | Crystal structure of human SPT16 Mid-AID/H3-H4 tetramer FACT Histone complex | ||||||
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![]() | Transcription/DNA binding protein / Transcription / Transcription-DNA binding protein complex | ||||||
Function / homology | ![]() FACT complex / positive regulation of DNA-templated transcription, elongation / nucleosome disassembly / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / negative regulation of megakaryocyte differentiation ...FACT complex / positive regulation of DNA-templated transcription, elongation / nucleosome disassembly / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Formation of HIV elongation complex in the absence of HIV Tat / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / nucleosome binding / RNA Polymerase II Transcription Elongation / Packaging Of Telomere Ends / Formation of RNA Pol II elongation complex / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / RNA Polymerase II Pre-transcription Events / Deposition of new CENPA-containing nucleosomes at the centromere / telomere organization / Inhibition of DNA recombination at telomere / Meiotic synapsis / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / epigenetic regulation of gene expression / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase I Promoter Escape / transcription elongation by RNA polymerase II / Transcriptional regulation by small RNAs / 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 / G2/M DNA damage checkpoint / HDMs demethylate histones / 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 / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / structural constituent of chromatin / nucleosome / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / 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 / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / gene expression / Regulation of TP53 Activity through Phosphorylation / Estrogen-dependent gene expression / transcription by RNA polymerase II / chromosome, telomeric region / DNA replication / cadherin binding / Amyloid fiber formation / protein heterodimerization activity / DNA repair / protein-containing complex / DNA binding / RNA binding / extracellular exosome / extracellular region / nucleoplasm / nucleus / membrane Similarity search - Function | ||||||
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![]() | Tsunaka, Y. / Fujiwara, Y. / Oyama, T. / Hirose, S. / Morikawa, K. | ||||||
![]() | ![]() Title: Integrated molecular mechanism directing nucleosome reorganization by human FACT. Authors: Yasuo Tsunaka / Yoshie Fujiwara / Takuji Oyama / Susumu Hirose / Kosuke Morikawa / ![]() Abstract: Facilitates chromatin transcription (FACT) plays essential roles in chromatin remodeling during DNA transcription, replication, and repair. Our structural and biochemical studies of human FACT- ...Facilitates chromatin transcription (FACT) plays essential roles in chromatin remodeling during DNA transcription, replication, and repair. Our structural and biochemical studies of human FACT-histone interactions present precise views of nucleosome reorganization, conducted by the FACT-SPT16 (suppressor of Ty 16) Mid domain and its adjacent acidic AID segment. AID accesses the H2B N-terminal basic region exposed by partial unwrapping of the nucleosomal DNA, thereby triggering the invasion of FACT into the nucleosome. The crystal structure of the Mid domain complexed with an H3-H4 tetramer exhibits two separate contact sites; the Mid domain forms a novel intermolecular β structure with H4. At the other site, the Mid-H2A steric collision on the H2A-docking surface of the H3-H4 tetramer within the nucleosome induces H2A-H2B displacement. This integrated mechanism results in disrupting the H3 αN helix, which is essential for retaining the nucleosomal DNA ends, and hence facilitates DNA stripping from histone. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 242.6 KB | Display | ![]() |
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PDB format | ![]() | 195.9 KB | Display | ![]() |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 4z2nC ![]() 2cv5S C: citing same article ( S: Starting model for refinement |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 33372.195 Da / Num. of mol.: 1 / Fragment: UNP residues 644-930 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() | ||
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#2: Protein | Mass: 11919.018 Da / Num. of mol.: 2 / Fragment: UNP residues 35-136 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #3: Protein | Mass: 11394.426 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.68 Å3/Da / Density % sol: 54.12 % |
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Crystal grow | Temperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7 Details: 10% PEG400, 0.9-1.1 M Imidazole, 100-150 mM L-histidine |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: RAYONIX MX-300 / Detector: CCD / Date: Jul 18, 2014 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9 Å / Relative weight: 1 |
Reflection | Resolution: 2.98→50 Å / Num. obs: 17819 / % possible obs: 97.7 % / Redundancy: 6.8 % / Rsym value: 0.078 / Net I/σ(I): 17.4 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 2CV5 Resolution: 2.981→46.963 Å / SU ML: 0.36 / Cross valid method: THROUGHOUT / σ(F): 1.35 / Phase error: 25.86 / Stereochemistry target values: ML
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.981→46.963 Å
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LS refinement shell |
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