SASDFX3

Semi-synthetic nucleosome core particle (NCP)

Data type: SASBDB experimental data Status: Published Curve type: SEC-SAS Last updated: 2019-12-06T13:07:15.624532+01:00
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1. Samples, Components and Experimental Conditions Sample & Experiment

Sample 1 · Semi-synthetic nucleosome core particle (NCP)

Concentration— – 1.8 Buffer / pH15 mM HEPES, 200 mM NaCl / 7.3
Experimental temperature20.0 Facility / beamlineESRF / BM29
Wavelength0.1 nmExposure1.0 s × 243

Molecular Components

ComponentType / organismUniProt and ConstructOligomeric StateMolecular weight
Histone H3
View sequence
ARTKQTARKSTGGKAPRKQLATKAARKSAPATGGVKKPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA
proteinXenopus laevis—2–136dimerMolecule count 215.271 kDa
Histone H4
View sequence
SGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
proteinXenopus laevisP627992–103dimerMolecule count 211.236 kDa
Histone H2a
View sequence
SGRGKQGGKTRAKAKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGRVTIAQGGVLPNIQSVLLPKKTESSKSAKSK
proteinXenopus laevisQ6AZJ82–130dimerMolecule count 213.95 kDa
Histone H2b
View sequence
AKSAPAPKKGSKKAVTKTQKKDGKKRRKTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSAK
proteinXenopus laevisQ921305–126dimerMolecule count 213.494 kDa
147bp 601 Widom sequence
View sequence
ATCGAGAATCCCGGTGCCGAGGCCGCTCAATTGGTCGTAGACAGCTCTAGCACCGCTTAAACGCACGTACGCGCTGTCCCCCGCGTTTTAACCGCCAAGGGGATTACTCCCTAGTCTCCAGGCACGTGTCAGATATATACATCCGAT
DNAsynthetic construct——–—monomerMolecule count 145.202 kDa

Experimental Curves

CurvePoints / columnsq rangeUncertainty qualityNegative-intensity pointsSource file
1593[3]0.07138524–2.852432 1/nmHas uncertainty columnMissing 05sasbdb/entries/x3/sasdfx3/source/SASDFX3.dat
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2. Measurements Reported by SASBDB Reported Results

MetricMethodValueUncertaintyUnit
dmaxP(r)12.8—nm
i0Guinier91.260.1arbitrary
i0P(r)90.55—arbitrary
mwExperimental200.0—kDa
porod_volumePorod353.0—nm³
rgGuinier4.350.01nm
rgP(r)4.268—nm

These values are reported by SASBDB; SAXSdb did not recalculate them from the experimental curve.

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3. Source Fits and Models Source Fits & Models

This entry has no source fit record.

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4. Source File Index Source Files

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5. Experiment Description and Publication Experiment & Publication

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6. Complete Source Record Complete Source Record

The following content comes directly from the SASBDB entry. Missing values are shown as “—”; SAXSdb does not infer undeclared units.

Open the original SASBDB entry

Buffer and Sample Properties

Buffer name15 mM HEPES, 200 mM NaClBuffer concentration—
pH7.3Additives—
Buffer description—
Purity measurement method—Extinction coefficient—
Absorbance—Scattering contrast—
Specific volume / dry volume— / —Mixture / deuteration— / —

Acquisition Conditions and Instrument

Measurement date2017-12-11Storage / measurement temperature4.0 / 20.0
Exposure time1.0Frames243
Wavelength0.1Sample-to-detector distance2.87
SourceX-ray synchrotronDetectorPilatus 1M
Facility / beamlineESRF / BM29 · Grenoble, France
q range0.071 – 2.852Sample volume / flow rate— / —

Original SASBDB Plots

Experimental I(q)
Experimental I(q)
Experimental I(q), log-log
Experimental I(q), log-log
Guinier plot
Guinier plot
Kratky plot
Kratky plot
P(r) plot
P(r) plot

Downloadable Files

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full_entry_zip:source record and ZIP contents (2 items)
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pddf:source record
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All source fields (unfiltered)

Every source field is expanded here, including empty values, list members and fields already shown above.

summary.json:202 field values
Field pathRaw value
codeSASDFX3
statusPublished
type_of_curveSEC-SAS
angular_unit1/nm
project.titleA Tail-Based Mechanism Drives Nucleosome Demethylation by the LSD2/NPAC Multimeric Complex.
project.publication.titleA Tail-Based Mechanism Drives Nucleosome Demethylation by the LSD2/NPAC Multimeric Complex.
project.publication.author_listMarabelli C, Marrocco B, Pilotto S, Chittori S, Picaud S, Marchese S, Ciossani G, Forneris F, Filippakopoulos P, Schoehn G, Rhodes D, Subramaniam S, Mattevi A
project.publication.journalCell Rep
project.publication.doi10.1016/j.celrep.2019.03.061
project.publication.pmid30970244
project.publication.published_date2019 Apr 9
project.statusreleased
project.submitted_date2019-03-12
project.released_date2019-04-16
pddf_datahttps://www.sasbdb.org/media/p_of_R_files/SASDFX3.out
intensities_datahttps://www.sasbdb.org/media/intensities_files/SASDFX3.dat
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sascif_datahttps://www.sasbdb.org/media/sascif/sascif_files/SASDFX3.sascif
experiment.instrument.detector.typeDectris
experiment.instrument.detector.namePilatus 1M
experiment.instrument.detector.resolution172.0
experiment.instrument.nameESRF
experiment.instrument.cityGrenoble
experiment.instrument.countryFrance
experiment.instrument.beamline_nameBM29
experiment.instrument.beam_geometry
experiment.instrument.type_of_sourceX-ray synchrotron
experiment.instrument.point_sourcenull
experiment.instrument.line_collimationnull
experiment.instrument.sample_path_lengthnull
experiment.instrument.line_collimation_slitlengthnull
experiment.instrument.line_collimation_integrationwidthnull
experiment.instrument.xray_energynull
experiment.instrument.beam_profile_ahnull
experiment.instrument.beam_profile_alnull
experiment.sample.molecule[0].long_nameHistone H3
experiment.sample.molecule[0].short_nameH3
experiment.sample.molecule[0].sequenceARTKQTARKSTGGKAPRKQLATKAARKSAPATGGVKKPHRYRPGTVALREIRRYQKSTELLIRKLPFQR LVREIAQDFKTDLRFQSSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA
experiment.sample.molecule[0].organismXenopus laevis
experiment.sample.molecule[0].uniprot_codenull
experiment.sample.molecule[0].uniprot_range_first2
experiment.sample.molecule[0].uniprot_range_last136
experiment.sample.molecule[0].oligomerizationdimer
experiment.sample.molecule[0].molecular_typeprotein
experiment.sample.molecule[0].uniprot_sequencenull
experiment.sample.molecule[0].mw15.271
experiment.sample.molecule[0].total_mw30.542
experiment.sample.molecule[0].number_molecules2
experiment.sample.molecule[0].complex_stateFalse
experiment.sample.molecule[0].deuterationnull
experiment.sample.molecule[0].molecule_sourcebiological
experiment.sample.molecule[0].molecule_descriptionnull
experiment.sample.molecule[1].long_nameHistone H4
experiment.sample.molecule[1].short_nameH4
experiment.sample.molecule[1].sequenceSGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDA VTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
experiment.sample.molecule[1].organismXenopus laevis
experiment.sample.molecule[1].uniprot_codeP62799
experiment.sample.molecule[1].uniprot_range_first2
experiment.sample.molecule[1].uniprot_range_last103
experiment.sample.molecule[1].oligomerizationdimer
experiment.sample.molecule[1].molecular_typeprotein
experiment.sample.molecule[1].uniprot_sequenceMSGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLK VFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
experiment.sample.molecule[1].mw11.236
experiment.sample.molecule[1].total_mw22.472
experiment.sample.molecule[1].number_molecules2
experiment.sample.molecule[1].complex_stateFalse
experiment.sample.molecule[1].deuterationnull
experiment.sample.molecule[1].molecule_sourcebiological
experiment.sample.molecule[1].molecule_descriptionnull
experiment.sample.molecule[2].long_nameHistone H2a
experiment.sample.molecule[2].short_nameH2a
experiment.sample.molecule[2].sequenceSGRGKQGGKTRAKAKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNA ARDNKKTRIIPRHLQLAVRNDEELNKLLGRVTIAQGGVLPNIQSVLLPKKTESSKSAKSK
experiment.sample.molecule[2].organismXenopus laevis
experiment.sample.molecule[2].uniprot_codeQ6AZJ8
experiment.sample.molecule[2].uniprot_range_first2
experiment.sample.molecule[2].uniprot_range_last130
experiment.sample.molecule[2].oligomerizationdimer
experiment.sample.molecule[2].molecular_typeprotein
experiment.sample.molecule[2].uniprot_sequenceMSGRGKQGGKTRAKAKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLT AEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGRVTIAQGGVLPNIQSVLLPKK TESSKSAKSK
experiment.sample.molecule[2].mw13.95
experiment.sample.molecule[2].total_mw27.9
experiment.sample.molecule[2].number_molecules2
experiment.sample.molecule[2].complex_stateFalse
experiment.sample.molecule[2].deuterationnull
experiment.sample.molecule[2].molecule_sourcebiological
experiment.sample.molecule[2].molecule_descriptionnull
experiment.sample.molecule[3].long_nameHistone H2b
experiment.sample.molecule[3].short_nameH2b
experiment.sample.molecule[3].sequenceAKSAPAPKKGSKKAVTKTQKKDGKKRRKTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFER IAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSAK
experiment.sample.molecule[3].organismXenopus laevis
experiment.sample.molecule[3].uniprot_codeQ92130
experiment.sample.molecule[3].uniprot_range_first5
experiment.sample.molecule[3].uniprot_range_last126
experiment.sample.molecule[3].oligomerizationdimer
experiment.sample.molecule[3].molecular_typeprotein
experiment.sample.molecule[3].uniprot_sequenceMPDPAKSAPAAKKGSKKAVTKTQKKDGKKRRKSRKESYAIYVYKVLKQVHPDTGISSKAM SIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVT KYTSAK
experiment.sample.molecule[3].mw13.494
experiment.sample.molecule[3].total_mw26.988
experiment.sample.molecule[3].number_molecules2
experiment.sample.molecule[3].complex_stateFalse
experiment.sample.molecule[3].deuterationnull
experiment.sample.molecule[3].molecule_sourcebiological
experiment.sample.molecule[3].molecule_descriptionnull
experiment.sample.molecule[4].long_name147bp 601 Widom sequence
experiment.sample.molecule[4].short_name601-147bp
experiment.sample.molecule[4].sequenceATCGAGAATCCCGGTGCCGAGGCCGCTCAATTGGTCGTAGACAGCTCTAGCACCGCTTAAACGCACGTACGCGCTGTCCCCCGCGTTTTAACCGCCAAGGGGATTACTCCCTAGTCTCCAGGCACGTGTCAGATATATACATCCGAT
experiment.sample.molecule[4].organismsynthetic construct
experiment.sample.molecule[4].uniprot_codenull
experiment.sample.molecule[4].uniprot_range_firstnull
experiment.sample.molecule[4].uniprot_range_lastnull
experiment.sample.molecule[4].oligomerizationmonomer
experiment.sample.molecule[4].molecular_typeDNA
experiment.sample.molecule[4].uniprot_sequencenull
experiment.sample.molecule[4].mw45.202
experiment.sample.molecule[4].total_mw45.202
experiment.sample.molecule[4].number_molecules1
experiment.sample.molecule[4].complex_stateFalse
experiment.sample.molecule[4].deuterationnull
experiment.sample.molecule[4].molecule_sourcebiological
experiment.sample.molecule[4].molecule_descriptionnull
experiment.sample.buffer.name15 mM HEPES, 200 mM NaCl
experiment.sample.buffer.concentration_unitnull
experiment.sample.buffer.commentnull
experiment.sample.buffer.additivenull
experiment.sample.buffer.concentrationnull
experiment.sample.buffer.pkanull
experiment.sample.buffer.ph7.3
experiment.sample.buffer.deuterationnull
experiment.sample.purity_methodnull
experiment.sample.nameSemi-synthetic nucleosome core particle (NCP)
experiment.sample.ext_coefficientnull
experiment.sample.contrastnull
experiment.sample.specific_volnull
experiment.sample.dry_volnull
experiment.sample.absorbptionnull
experiment.sample.deuterationnull
experiment.sample.mixturenull
experiment.contributor[0].affiliation[0].short_namenull
experiment.contributor[0].affiliation[0].addressItaly
experiment.contributor[0].affiliation[0].full_nameUniversity of Pavia
experiment.contributor[0].affiliation[0].webpagehttp://wcm-3.unipv.it
experiment.contributor[0].contributor_nameFederico
experiment.contributor[0].contributor_surnameForneris
experiment.contributor[0].orcidnull
experiment.concentration_methodnull
experiment.concentration_unitnull
experiment.date2017-12-11
experiment.storage_temperature4.0
experiment.cell_temperature20.0
experiment.exposure_time1.0
experiment.number_of_frames243
experiment.wavelength0.1
experiment.sample_detector_distance2.87
experiment.concentration_minnull
experiment.concentration_max1.8
experiment.sample_volumenull
experiment.flow_ratenull
experiment.s_min0.071
experiment.s_max2.852
experiment.total_exposure_timenull
experiment.seccolumnnull
fits[]
estimated_volume_methodnull
pddf_softwareATSAS GNOM
pddf_software_version5.0
i0_calibration_standardnull
descriptionnull
experiment_descriptionSynchrotron SAXS data from solutions of a semi-synthetic nucleosome core particle (NCP) in 15 mM HEPES, 200 mM NaCl, pH 7.3 were collected using size-exclusion chromatography SAXS (SEC-SAXS) on the BM29 beam line at the ESRF (Grenoble, France) using a Pilatus 1M detector at a sample-detector distance of 2.9 m and at a wavelength of λ = 0.1 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). SEC-SAXS was performed at 20 °C using the following parameters: Column: Wyatt WTC-030N5; Flow rate: 0.25 mL/min; Sample injection concentration: 2.5 mg/mL; Injection volume: 50 μL. The data were collected through the SEC peak of the sample as a series of 243 x 1 second exposures. Each unsubtracted data frame was normalised to the intensity of the transmitted beam and radially averaged and the scattering of an appropriate solvent-blank was subtracted. The resulting subtracted frames were scaled and averaged to generate the final SAXS profile displayed in this entry.
tags[]
intensity_unitarbitrary
experimental_mw200.0
experimental_mw_errornull
guinier_i0_mwnull
guinier_i0_mw_errornull
porod_mwnull
porod_mw_errornull
pddf_i090.55
pddf_i0_errornull
guinier_i091.26
guinier_i0_error0.1
pddf_rg4.268
pddf_rg_errornull
guinier_rg4.35
guinier_rg_error0.01
pddf_dmax12.8
pddf_dmax_errornull
porod_volume353.0
porod_volume_errornull
estimated_volumenull
estimated_volume_errornull
guinier_point_first15
guinier_point_last56
pddf_point_firstnull
pddf_point_lastnull
i0_calibration_standard_datanull
intensities_log_log_plotSASDFX3_datloglog_img.png
symmetrynull
last_modified2019-12-06T13:07:15.624532+01:00
bragg_peak[]
manifest.json:36 field values
Field pathRaw value
codeSASDFX3
statussuccess
started_at2026-08-11T14:10:07.228570+00:00
finished_at2026-08-11T14:10:15.193773+00:00
source_last_modified2019-12-06T13:07:15.624532+01:00
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View the complete summary.json source
{
  "code": "SASDFX3",
  "status": "Published",
  "type_of_curve": "SEC-SAS",
  "angular_unit": "1/nm",
  "project": {
    "title": "A Tail-Based Mechanism Drives Nucleosome Demethylation by the LSD2/NPAC Multimeric Complex.",
    "publication": {
      "title": "A Tail-Based Mechanism Drives Nucleosome Demethylation by the LSD2/NPAC Multimeric Complex.",
      "author_list": "Marabelli C, Marrocco B, Pilotto S, Chittori S, Picaud S, Marchese S, Ciossani G, Forneris F, Filippakopoulos P, Schoehn G, Rhodes D, Subramaniam S, Mattevi A",
      "journal": "Cell Rep",
      "doi": "10.1016/j.celrep.2019.03.061",
      "pmid": "30970244",
      "published_date": "2019 Apr 9"
    },
    "status": "released",
    "submitted_date": "2019-03-12",
    "released_date": "2019-04-16"
  },
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  "intensities_data": "https://www.sasbdb.org/media/intensities_files/SASDFX3.dat",
  "intensities_log_plot": "https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDFX3_dat_img.png",
  "intensities_kratky_plot": "https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDFX3_kratky_img.png",
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            "short_name": null,
            "address": "Italy",
            "full_name": "University of Pavia",
            "webpage": "http://wcm-3.unipv.it"
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        "contributor_name": "Federico",
        "contributor_surname": "Forneris",
        "orcid": null
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    "concentration_unit": null,
    "date": "2017-12-11",
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  "last_modified": "2019-12-06T13:07:15.624532+01:00",
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View the complete manifest.json source
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