SASDXQ4

C-terminal helix of RomR protein from Myxococcus xanthus

Data type: SASBDB experimental data Status: Published Curve type: SEC-SAS Last updated: 2025-11-12T11:19:22.068107+01:00
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1. Samples, Components and Experimental Conditions Sample & Experiment

Sample 1 · C-terminal helix of RomR protein from Myxococcus xanthus

Concentration— – 1.0 Buffer / pH20 mM HEPES, 150 mM NaCl / 8.0
Experimental temperature4.0 Facility / beamlineESRF / BM29
Wavelength0.0991 nmExposure2.0 s × 750

Molecular Components

ComponentType / organismUniProt and ConstructOligomeric StateMolecular weight
Two-component system response regulator
View sequence
MDHHHHHHSSGVDLGTENLYFQSASMDGGEALLREALSKASREVIEKIAWEVVPQLAETIIREELERLIKDRETQH
proteinMyxococcus xanthusA0AAE6G1Y1372–421trimerMolecule count 38.727 kDa

Experimental Curves

CurvePoints / columnsq rangeUncertainty qualityNegative-intensity pointsSource file
11000[3]0.06285053–5.209716 1/nmHas uncertainty columnMissing 00sasbdb/entries/q4/sasdxq4/source/SASDXQ4.dat
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2. Measurements Reported by SASBDB Reported Results

MetricMethodValueUncertaintyUnit
dmaxP(r)10.33—nm
i0Guinier35.669—arbitrary
i0P(r)35.87—arbitrary
mwExperimental25.0—kDa
mwPorod26.0—kDa
porod_volumePorod42.64—nm³
rgGuinier2.7130.005nm
rgP(r)2.79—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

Fit 2 · EOM/GAJOE

χ²: 1.115CorMap p: 0.0009Unit: 1/A
ModelName / TypeSoftwareSymmetryModel MWPDB DeclarationSource file
1SASDXQ4_EOMmixEOM/RANCH ———Model Image
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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 name20 mM HEPES, 150 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 date2023-03-31Storage / measurement temperature-20.0 / 4.0
Exposure time2.0Frames750
Wavelength0.0991Sample-to-detector distance2.81
SourceX-ray synchrotronDetectorPilatus3 2M
Facility / beamlineESRF / BM29 · Grenoble, France
q range0.063 – 5.21Sample volume / flow rate50.0 / 0.6

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:179 field values
Field pathRaw value
codeSASDXQ4
statusPublished
type_of_curveSEC-SAS
angular_unit1/nm
project.titleStructural and biophysical insights into RomR, MglB and MglC interactions involved in regulating cell polarity in Myxococcus xanthus
project.publication.titleStructural and biophysical insights into RomR, MglB and MglC interactions involved in regulating cell polarity in Myxococcus xanthus
project.publication.author_listKodesia A, Kapoor S, Thakur K
project.publication.journalJournal of Biological Chemistry
project.publication.doi10.1016/j.jbc.2025.110907
project.publication.pmidnull
project.publication.published_date2025 Nov
project.statusreleased
project.submitted_date2025-05-18
project.released_date2025-11-07
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experiment.instrument.detector.typenull
experiment.instrument.detector.namePilatus3 2M
experiment.instrument.detector.resolution0.172
experiment.instrument.nameESRF
experiment.instrument.cityGrenoble
experiment.instrument.countryFrance
experiment.instrument.beamline_nameBM29
experiment.instrument.beam_geometrypoint
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_nameTwo-component system response regulator
experiment.sample.molecule[0].short_nameRomR(371-420)
experiment.sample.molecule[0].sequenceMDHHHHHHSSGVDLGTENLYFQSASMDGGEALLREALSKASREVIEKIAWEVVPQLAETIIREELERLIKDRETQH
experiment.sample.molecule[0].organismMyxococcus xanthus
experiment.sample.molecule[0].uniprot_codeA0AAE6G1Y1
experiment.sample.molecule[0].uniprot_range_first372
experiment.sample.molecule[0].uniprot_range_last421
experiment.sample.molecule[0].oligomerizationtrimer
experiment.sample.molecule[0].molecular_typeprotein
experiment.sample.molecule[0].uniprot_sequenceMPKNLLVADDSLTIRKVIGMIFATEDFQVTAVDNGLDAISRTRELRPDVVLADVMMPGKS GYEVCEALKNDPATQGIPVVLLAGTFEAFDENRARAARADDHVTKPFESQVLLDKVKALV GQKSNTMPASAATQVRHAAPQPVAAPAPVAAAAPPGARPAPPPGARPGVPPGPGVPRPPP GAGVPPPGARPPGPGMPPGMARPPGPGMPPPGAPGAPRPPGPGMPPGMARPPGPGVPPGA RPPGPGMPPGARPGVPPPPGGSAPGLPPRPGMPPGAVARPGVPPPPGGPAPGGFSRPPVG APQPPPGAAPPPAARGRDPFGLGAPAPAAAQPSISIEDSLPDQGDAEEISLDIATPAPVA ARPASARAPAADGGEALLREALSKASREVIEKIAWEVVPQLAETIIREELERLIKDRETQ H
experiment.sample.molecule[0].mw8.727
experiment.sample.molecule[0].total_mw26.181
experiment.sample.molecule[0].number_molecules3
experiment.sample.molecule[0].complex_stateFalse
experiment.sample.molecule[0].deuterationnull
experiment.sample.molecule[0].molecule_sourcebiological
experiment.sample.molecule[0].molecule_descriptionC-terminal helix of RomR protein of Myxococcus xanthus. The protein construct contains an additional 26 non-native amino acids at the N-terminus, including a polyhistidine tag (MDHHHHHHSSGVDLGTENLYFQSASM)
experiment.sample.buffer.name20 mM HEPES, 150 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.nameC-terminal helix of RomR protein from Myxococcus xanthus
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_nameCSIR
experiment.contributor[0].affiliation[0].addressChandigarh, India
experiment.contributor[0].affiliation[0].full_nameCSIR-Institute of Microbial Technology
experiment.contributor[0].affiliation[0].webpagehttp://www.imtech.res.in/
experiment.contributor[0].contributor_nameAkriti
experiment.contributor[0].contributor_surnameKodesia
experiment.contributor[0].orcid
experiment.concentration_methodnull
experiment.concentration_unitnull
experiment.date2023-03-31
experiment.storage_temperature-20.0
experiment.cell_temperature4.0
experiment.exposure_time2.0
experiment.number_of_frames750
experiment.wavelength0.0991
experiment.sample_detector_distance2.81
experiment.concentration_minnull
experiment.concentration_max1.0
experiment.sample_volume50.0
experiment.flow_rate0.6
experiment.s_min0.063
experiment.s_max5.21
experiment.total_exposure_timenull
experiment.seccolumn34
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i0_calibration_standardnull
descriptionnull
experiment_descriptionnull
tags[]
intensity_unitarbitrary
experimental_mw25.0
experimental_mw_errornull
guinier_i0_mwnull
guinier_i0_mw_errornull
porod_mw26.0
porod_mw_errornull
pddf_i035.87
pddf_i0_errornull
guinier_i035.669
guinier_i0_errornull
pddf_rg2.79
pddf_rg_errornull
guinier_rg2.713
guinier_rg_error0.005
pddf_dmax10.33
pddf_dmax_errornull
porod_volume42.64
porod_volume_errornull
estimated_volumenull
estimated_volume_errornull
guinier_point_first2
guinier_point_last81
pddf_point_firstnull
pddf_point_lastnull
i0_calibration_standard_datanull
intensities_log_log_plotSASDXQ4_datloglog_img.png
symmetrynull
last_modified2025-11-12T11:19:22.068107+01:00
bragg_peak[]
manifest.json:34 field values
Field pathRaw value
codeSASDXQ4
statussuccess
started_at2026-08-11T14:29:11.824767+00:00
finished_at2026-08-11T14:29:19.676350+00:00
source_last_modified2025-11-12T11:19:22.068107+01:00
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View the complete summary.json source
{
  "code": "SASDXQ4",
  "status": "Published",
  "type_of_curve": "SEC-SAS",
  "angular_unit": "1/nm",
  "project": {
    "title": "Structural and biophysical insights into RomR, MglB and MglC interactions involved in regulating cell polarity in Myxococcus xanthus",
    "publication": {
      "title": "Structural and biophysical insights into RomR, MglB and MglC interactions involved in regulating cell polarity in Myxococcus xanthus",
      "author_list": "Kodesia A, Kapoor S, Thakur K",
      "journal": "Journal of Biological Chemistry",
      "doi": "10.1016/j.jbc.2025.110907",
      "pmid": null,
      "published_date": "2025 Nov"
    },
    "status": "released",
    "submitted_date": "2025-05-18",
    "released_date": "2025-11-07"
  },
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          "long_name": "Two-component system response regulator",
          "short_name": "RomR(371-420)",
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          "molecule_source": "biological",
          "molecule_description": "C-terminal helix of RomR protein of Myxococcus xanthus. The protein construct contains an additional 26 non-native amino acids at the N-terminus, including a polyhistidine tag (MDHHHHHHSSGVDLGTENLYFQSASM)"
        }
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        "pka": null,
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      },
      "purity_method": null,
      "name": "C-terminal helix of RomR protein from Myxococcus xanthus",
      "ext_coefficient": null,
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      "specific_vol": null,
      "dry_vol": null,
      "absorbption": null,
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    },
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View the complete manifest.json source
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