SASDDD7

Apolipoprotein E2

Data type: SASBDB experimental data Status: Published Curve type: SEC-SAS Last updated: 2019-12-06T13:07:15.624532+01:00

Sample concentration: UNKNOWN. The experimental molecular weight (MW) quoted in this entry (144 kDa) was determined using multi-angle laser light scattering (MALLS). Analytical ultracentrifugation provides a MW estimate of 122 kDa.

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1. Samples, Components and Experimental Conditions Sample & Experiment

Sample 1 · Apolipoprotein E2

Concentration— – — Buffer / pH20 mM HEPES, 300 mM NaCl / 8.0
Experimental temperature20.0 Facility / beamlineDiamond Light Source / B21
Wavelength0.1 nmExposure3.0 s × 7

Molecular Components

ComponentType / organismUniProt and ConstructOligomeric StateMolecular weight
Apolipoprotein E2
View sequence
GPHMKVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQTLSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQARLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKCLAVYQAGAREGAERGLSAIRERLGPLVEQGRVRAATVGSLAGQPLQERAQAWGERLRARMEEMGSRTRDRLDEVKEQVAEVRAKLEEQAQQIRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEKVQAAVGTSAAPVPSDNH
proteinHomo sapiensP0264919–317tetramerMolecule count 434.606 kDa

Experimental Curves

CurvePoints / columnsq rangeUncertainty qualityNegative-intensity pointsSource file
11659[3]0.0034208308–0.36955834 1/AHas uncertainty columnMissing 05sasbdb/entries/d7/sasddd7/source/SASDDD7.dat
▼

2. Measurements Reported by SASBDB Reported Results

MetricMethodValueUncertaintyUnit
dmaxP(r)19.45—Å
i0Guinier0.2760.00049arbitrary
i0P(r)0.2785—arbitrary
mwExperimental144.0—kDa
porod_volumePorod400.0—ų
rgGuinier5.6340.063Å
rgP(r)5.82—Å

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

▼

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 name20 mM HEPES, 300 mM NaClBuffer concentration—
pH8.0Additives—
Buffer description—
Purity measurement method—Extinction coefficient—
Absorbance—Scattering contrast—
Specific volume / dry volume— / —Mixture / deuteration— / —

Acquisition Conditions and Instrument

Measurement date2017-11-29Storage / measurement temperature4.0 / 20.0
Exposure time3.0Frames7
Wavelength0.1Sample-to-detector distance3.9
SourceX-ray synchrotronDetectorPilatus 2M
Facility / beamlineDiamond Light Source / B21 · Didcot, UK
q range0.034 – 3.696Sample 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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All source fields (unfiltered)

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

summary.json:134 field values
Field pathRaw value
codeSASDDD7
statusPublished
type_of_curveSEC-SAS
angular_unit1/A
project.titleThe molecular basis for Apolipoprotein E4 as the major risk factor for late onset Alzheimer's disease.
project.publication.titleThe molecular basis for Apolipoprotein E4 as the major risk factor for late onset Alzheimer's disease.
project.publication.author_listRaulin AC, Kraft L, Al-Hilaly YK, Xue WF, McGeehan JE, Atack JR, Serpell L
project.publication.journalJ Mol Biol
project.publication.doi10.1016/j.jmb.2019.04.019
project.publication.pmid31051176
project.publication.published_date2019 Apr 30
project.statusreleased
project.submitted_date2018-06-07
project.released_date2019-05-09
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experiment.instrument.detector.typenull
experiment.instrument.detector.namePilatus 2M
experiment.instrument.detector.resolutionnull
experiment.instrument.nameDiamond Light Source
experiment.instrument.cityDidcot
experiment.instrument.countryUK
experiment.instrument.beamline_nameB21
experiment.instrument.beam_geometry1 x 5 mm
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_nameApolipoprotein E2
experiment.sample.molecule[0].short_nameApoE2
experiment.sample.molecule[0].sequenceGPHMKVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQTLSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQARLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKCLAVYQAGAREGAERGLSAIRERLGPLVEQGRVRAATVGSLAGQPLQERAQAWGERLRARMEEMGSRTRDRLDEVKEQVAEVRAKLEEQAQQIRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEKVQAAVGTSAAPVPSDNH
experiment.sample.molecule[0].organismHomo sapiens
experiment.sample.molecule[0].uniprot_codeP02649
experiment.sample.molecule[0].uniprot_range_first19
experiment.sample.molecule[0].uniprot_range_last317
experiment.sample.molecule[0].oligomerizationtetramer
experiment.sample.molecule[0].molecular_typeprotein
experiment.sample.molecule[0].uniprot_sequenceMKVLWAALLVTFLAGCQAKVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQT LSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQA RLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKRLAVY QAGAREGAERGLSAIRERLGPLVEQGRVRAATVGSLAGQPLQERAQAWGERLRARMEEMG SRTRDRLDEVKEQVAEVRAKLEEQAQQIRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEK VQAAVGTSAAPVPSDNH
experiment.sample.molecule[0].mw34.606
experiment.sample.molecule[0].total_mw138.848
experiment.sample.molecule[0].number_molecules4
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.buffer.name20 mM HEPES, 300 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.ph8.0
experiment.sample.buffer.deuterationnull
experiment.sample.purity_methodnull
experiment.sample.nameApolipoprotein E2
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].addressBrighton, UK
experiment.contributor[0].affiliation[0].full_nameUniversity of Sussex
experiment.contributor[0].affiliation[0].webpagehttp://www.sussex.ac.uk/
experiment.contributor[0].contributor_nameLucas
experiment.contributor[0].contributor_surnameKraft
experiment.contributor[0].orcid
experiment.concentration_methodnull
experiment.concentration_unitnull
experiment.date2017-11-29
experiment.storage_temperature4.0
experiment.cell_temperature20.0
experiment.exposure_time3.0
experiment.number_of_frames7
experiment.wavelength0.1
experiment.sample_detector_distance3.9
experiment.concentration_minnull
experiment.concentration_maxnull
experiment.sample_volumenull
experiment.flow_ratenull
experiment.s_min0.034
experiment.s_max3.696
experiment.total_exposure_timenull
experiment.seccolumnnull
fits[]
estimated_volume_methodnull
pddf_softwareATSAS GNOM
pddf_software_version4.6
i0_calibration_standardnull
descriptionSample concentration: UNKNOWN. The experimental molecular weight (MW) quoted in this entry (144 kDa) was determined using multi-angle laser light scattering (MALLS). Analytical ultracentrifugation provides a MW estimate of 122 kDa.
experiment_descriptionSynchrotron SAXS data from solutions of human apolipoprotein E2 in 20 mM HEPES, 300 mM NaCl, pH 8 were collected on the B21 beam line at the Diamond Light Source (Oxfordshire, UK) using a Pilatus 2M detector at a sample-detector distance of 3.9 m and at a wavelength of λ = 0.1 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Seven successive 3 second frames were collected at a sample temperature of 20°C. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.
tags[]
intensity_unitarbitrary
experimental_mw144.0
experimental_mw_errornull
guinier_i0_mwnull
guinier_i0_mw_errornull
porod_mwnull
porod_mw_errornull
pddf_i00.2785
pddf_i0_errornull
guinier_i00.276
guinier_i0_error0.00049
pddf_rg5.82
pddf_rg_errornull
guinier_rg5.634
guinier_rg_error0.063
pddf_dmax19.45
pddf_dmax_errornull
porod_volume400.0
porod_volume_errornull
estimated_volumenull
estimated_volume_errornull
guinier_point_first22
guinier_point_last89
pddf_point_firstnull
pddf_point_lastnull
i0_calibration_standard_datanull
intensities_log_log_plotSASDDD7_datloglog_img.png
symmetrynull
last_modified2019-12-06T13:07:15.624532+01:00
bragg_peak[]
manifest.json:36 field values
Field pathRaw value
codeSASDDD7
statussuccess
started_at2026-08-11T15:27:14.760445+00:00
finished_at2026-08-11T15:27:22.565743+00:00
source_last_modified2019-12-06T13:07:15.624532+01:00
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View the complete summary.json source
{
  "code": "SASDDD7",
  "status": "Published",
  "type_of_curve": "SEC-SAS",
  "angular_unit": "1/A",
  "project": {
    "title": "The molecular basis for Apolipoprotein E4 as the major risk factor for late onset Alzheimer's disease.",
    "publication": {
      "title": "The molecular basis for Apolipoprotein E4 as the major risk factor for late onset Alzheimer's disease.",
      "author_list": "Raulin AC, Kraft L, Al-Hilaly YK, Xue WF, McGeehan JE, Atack JR, Serpell L",
      "journal": "J Mol Biol",
      "doi": "10.1016/j.jmb.2019.04.019",
      "pmid": "31051176",
      "published_date": "2019 Apr 30"
    },
    "status": "released",
    "submitted_date": "2018-06-07",
    "released_date": "2019-05-09"
  },
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        "resolution": null
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      "city": "Didcot",
      "country": "UK",
      "beamline_name": "B21",
      "beam_geometry": "1 x 5 mm",
      "type_of_source": "X-ray synchrotron",
      "point_source": null,
      "line_collimation": null,
      "sample_path_length": null,
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    "sample": {
      "molecule": [
        {
          "long_name": "Apolipoprotein E2",
          "short_name": "ApoE2",
          "sequence": "GPHMKVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQTLSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQARLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKCLAVYQAGAREGAERGLSAIRERLGPLVEQGRVRAATVGSLAGQPLQERAQAWGERLRARMEEMGSRTRDRLDEVKEQVAEVRAKLEEQAQQIRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEKVQAAVGTSAAPVPSDNH",
          "organism": "Homo sapiens",
          "uniprot_code": "P02649",
          "uniprot_range_first": 19,
          "uniprot_range_last": 317,
          "oligomerization": "tetramer",
          "molecular_type": "protein",
          "uniprot_sequence": "MKVLWAALLVTFLAGCQAKVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQT\nLSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQA\nRLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKRLAVY\nQAGAREGAERGLSAIRERLGPLVEQGRVRAATVGSLAGQPLQERAQAWGERLRARMEEMG\nSRTRDRLDEVKEQVAEVRAKLEEQAQQIRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEK\nVQAAVGTSAAPVPSDNH",
          "mw": 34.606,
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          "number_molecules": 4,
          "complex_state": false,
          "deuteration": null,
          "molecule_source": "biological",
          "molecule_description": null
        }
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        "ph": 8.0,
        "deuteration": null
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      "purity_method": null,
      "name": "Apolipoprotein E2",
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      "absorbption": null,
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        "orcid": ""
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  "experiment_description": "Synchrotron SAXS data from solutions of human apolipoprotein E2 in 20 mM HEPES, 300 mM NaCl, pH 8 were collected on the B21 beam line at the Diamond Light Source (Oxfordshire, UK) using a Pilatus 2M detector at a sample-detector distance of 3.9 m and at a wavelength of λ = 0.1 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Seven successive 3 second frames were collected at a sample temperature of 20°C. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.",
  "tags": [],
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View the complete manifest.json source
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