SASDXY6

M protease of SARS CoV-2 with JL-352 compound

Data type: SASBDB experimental data Status: Published Curve type: Single concentration Last updated: 2026-05-09T06:52:00.898097+02:00

M protease of SARS-CoV-2 was purified using Ni-NTA affinity columns, and further purification was done using Size Exclusion Chromatography. The purified protein was then incubated with JL-352 for 30 minutes before SAXS analysis.

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1. Samples, Components and Experimental Conditions Sample & Experiment

Sample 1 · M protease of SARS CoV-2 with JL-352 compound

Concentration— – 5.0 Buffer / pH50mM Tris, 200mM NaCl / 8.0
Experimental temperature10.0 Facility / beamlineCSIR-Central Drug Research Institute / Anton Paar SAXSpace
Wavelength0.154 nmExposure1800.0 s × 2

Molecular Components

ComponentType / organismUniProt and ConstructOligomeric StateMolecular weight
3 Chymotrypsin Like Protease
View sequence
>SGFRKMAFPSGKVEGCMVQVTCGTTTLNGLWLDDVVYCPRHVICTSEDMLNPNYEDLLIRKSNHNFLVQAGNVQLRVIGHSMQNCVLKLKVDTANPKTPKYKFVRIQPGQTFSVLACYNGSPSGVYQCAMRPNFTIKGSFLNGSCGSVGFNIDYDCVSFCYMHHMELPTGVHAGTDLEGNFYGPFVDRQTAQAAGTDTTITVNVLAWLYAAVINGDRWFLNRFTTTLNDFNLVAMKYNYEPLTQDHVDILGPLSAQTGIAVLDMCASLKELLQNGMNGRTILGSALLEDEFTPFDVVRQCSGVTFQ
proteinSevere acute respiratory syndrome coronavirus 2P0DTC13264–3569dimerMolecule count 233.8 kDa

Experimental Curves

CurvePoints / columnsq rangeUncertainty qualityNegative-intensity pointsSource file
1602[3]0.12023977557009642–3.979533993239433 1/nmHas uncertainty columnMissing 00sasbdb/entries/y6/sasdxy6/source/SASDXY6.dat
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2. Measurements Reported by SASBDB Reported Results

MetricMethodValueUncertaintyUnit
dmaxP(r)12.32—nm
i0Guinier55753.1—arbitrary
i0P(r)51480.0—arbitrary
mwExperimental74.32—kDa
mwPorod170.0—kDa
porod_volumePorod271.0—nm³
rgGuinier4.6541.01nm
rgP(r)4.336—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 name50mM Tris, 200mM 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 date2021-03-26Storage / measurement temperature-20.0 / 10.0
Exposure time1800.0Frames2
Wavelength0.154Sample-to-detector distance0.317
SourceX-ray in houseDetectorMythen2 R 1K
Facility / beamlineCSIR-Central Drug Research Institute / Anton Paar SAXSpace · Lucknow, India
q range0.12 – 3.98Sample 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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sascif: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:129 field values
Field pathRaw value
codeSASDXY6
statusPublished
type_of_curveSingle concentration
angular_unit1/nm
project.titleM protease SARS CoV-2 with JL-352
project.publicationnull
project.statusreleased
project.submitted_date2025-07-22
project.released_date2026-05-09
pddf_datahttps://www.sasbdb.org/media/p_of_R_files/SASDXY6.out
intensities_datahttps://www.sasbdb.org/media/intensities_files/SASDXY6.dat
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sascif_datahttps://www.sasbdb.org/media/sascif/sascif_files/SASDXY6.sascif
experiment.instrument.detector.typeHybrid Photon Counting (HPC)
experiment.instrument.detector.nameMythen2 R 1K
experiment.instrument.detector.resolutionnull
experiment.instrument.nameCSIR-Central Drug Research Institute
experiment.instrument.cityLucknow
experiment.instrument.countryIndia
experiment.instrument.beamline_nameAnton Paar SAXSpace
experiment.instrument.beam_geometrynull
experiment.instrument.type_of_sourceX-ray in house
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_name3 Chymotrypsin Like Protease
experiment.sample.molecule[0].short_name3CL pro
experiment.sample.molecule[0].sequence>SGFRKMAFPSGKVEGCMVQVTCGTTTLNGLWLDDVVYCPRHVICTSEDMLNPNYEDLLIRKSNHNFLVQAGNVQLRVIGHSMQNCVLKLKVDTANPKTPKYKFVRIQPGQTFSVLACYNGSPSGVYQCAMRPNFTIKGSFLNGSCGSVGFNIDYDCVSFCYMHHMELPTGVHAGTDLEGNFYGPFVDRQTAQAAGTDTTITVNVLAWLYAAVINGDRWFLNRFTTTLNDFNLVAMKYNYEPLTQDHVDILGPLSAQTGIAVLDMCASLKELLQNGMNGRTILGSALLEDEFTPFDVVRQCSGVTFQ
experiment.sample.molecule[0].organismSevere acute respiratory syndrome coronavirus 2
experiment.sample.molecule[0].uniprot_codeP0DTC1
experiment.sample.molecule[0].uniprot_range_first3264
experiment.sample.molecule[0].uniprot_range_last3569
experiment.sample.molecule[0].oligomerizationdimer
experiment.sample.molecule[0].molecular_typeprotein
experiment.sample.molecule[0].uniprot_sequenceMESLVPGFNEKTHVQLSLPVLQVRDVLVRGFGDSVEEVLSEARQHLKDGTCGLVEVEKGV LPQLEQPYVFIKRSDARTAPHGHVMVELVAELEGIQYGRSGETLGVLVPHVGEIPVAYRK VLLRKNGNKGAGGHSYGADLKSFDLGDELGTDPYEDFQENWNTKHSSGVTRELMRELNGG AYTRYVDNNFCGPDGYPLECIKDLLARAGKASCTLSEQLDFIDTKRGVYCCREHEHEIAW YTERSEKSYELQTPFEIKLAKKFDTFNGECPNFVFPLNSIIKTIQPRVEKKKLDGFMGRI RSVYPVASPNECNQMCLSTLMKCDHCGETSWQTGDFVKATCEFCGTENLTKEGATTCGYL PQNAVVKIYCPACHNSEVGPEHSLAEYHNESGLKTILRKGGRTIAFGGCVFSYVGCHNKC AYWVPRASANIGCNHTGVVGEGSEGLNDNLLEILQKEKVNINIVGDFKLNEEIAIILASF SASTSAFVETVKGLDYKAFKQIVESCGNFKVTKGKAKKGAWNIGEQKSILSPLYAFASEA ARVVRSIFSRTLETAQNSVRVLQKAAITILDGISQYSLRLIDAMMFTSDLATNNLVVMAY ITGGVVQLTSQWLTNIFGTVYEKLKPVLDWLEEKFKEGVEFLRDGWEIVKFISTCACEIV GGQIVTCAKEIKESVQTFFKLVNKFLALCADSIIIGGAKLKALNLGETFVTHSKGLYRKC VKSREETGLLMPLKAPKEIIFLEGETLPTEVLTEEVVLKTGDLQPLEQPTSEAVEAPLVG TPVCINGLMLLEIKDTEKYCALAPNMMVTNNTFTLKGGAPTKVTFGDDTVIEVQGYKSVN ITFELDERIDKVLNEKCSAYTVELGTEVNEFACVVADAVIKTLQPVSELLTPLGIDLDEW SMATYYLFDESGEFKLASHMYCSFYPPDEDEEEGDCEEEEFEPSTQYEYGTEDDYQGKPL EFGATSAALQPEEEQEEDWLDDDSQQTVGQQDGSEDNQTTTIQTIVEVQPQLEMELTPVV QTIEVNSFSGYLKLTDNVYIKNADIVEEAKKVKPTVVVNAANVYLKHGGGVAGALNKATN NAMQVESDDYIATNGPLKVGGSCVLSGHNLAKHCLHVVGPNVNKGEDIQLLKSAYENFNQ HEVLLAPLLSAGIFGADPIHSLRVCVDTVRTNVYLAVFDKNLYDKLVSSFLEMKSEKQVE QKIAEIPKEEVKPFITESKPSVEQRKQDDKKIKACVEEVTTTLEETKFLTENLLLYIDIN GNLHPDSATLVSDIDITFLKKDAPYIVGDVVQEGVLTAVVIPTKKAGGTTEMLAKALRKV PTDNYITTYPGQGLNGYTVEEAKTVLKKCKSAFYILPSIISNEKQEILGTVSWNLREMLA HAEETRKLMPVCVETKAIVSTIQRKYKGIKIQEGVVDYGARFYFYTSKTTVASLINTLND LNETLVTMPLGYVTHGLNLEEAARYMRSLKVPATVSVSSPDAVTAYNGYLTSSSKTPEEH FIETISLAGSYKDWSYSGQSTQLGIEFLKRGDKSVYYTSNPTTFHLDGEVITFDNLKTLL SLREVRTIKVFTTVDNINLHTQVVDMSMTYGQQFGPTYLDGADVTKIKPHNSHEGKTFYV LPNDDTLRVEAFEYYHTTDPSFLGRYMSALNHTKKWKYPQVNGLTSIKWADNNCYLATAL LTLQQIELKFNPPALQDAYYRARAGEAANFCALILAYCNKTVGELGDVRETMSYLFQHAN LDSCKRVLNVVCKTCGQQQTTLKGVEAVMYMGTLSYEQFKKGVQIPCTCGKQATKYLVQQ ESPFVMMSAPPAQYELKHGTFTCASEYTGNYQCGHYKHITSKETLYCIDGALLTKSSEYK GPITDVFYKENSYTTTIKPVTYKLDGVVCTEIDPKLDNYYKKDNSYFTEQPIDLVPNQPY PNASFDNFKFVCDNIKFADDLNQLTGYKKPASRELKVTFFPDLNGDVVAIDYKHYTPSFK KGAKLLHKPIVWHVNNATNKATYKPNTWCIRCLWSTKPVETSNSFDVLKSEDAQGMDNLA CEDLKPVSEEVVENPTIQKDVLECNVKTTEVVGDIILKPANNSLKITEEVGHTDLMAAYV DNSSLTIKKPNELSRVLGLKTLATHGLAAVNSVPWDTIANYAKPFLNKVVSTTTNIVTRC LNRVCTNYMPYFFTLLLQLCTFTRSTNSRIKASMPTTIAKNTVKSVGKFCLEASFNYLKS PNFSKLINIIIWFLLLSVCLGSLIYSTAALGVLMSNLGMPSYCTGYREGYLNSTNVTIAT YCTGSIPCSVCLSGLDSLDTYPSLETIQITISSFKWDLTAFGLVAEWFLAYILFTRFFYV LGLAAIMQLFFSYFAVHFISNSWLMWLIINLVQMAPISAMVRMYIFFASFYYVWKSYVHV VDGCNSSTCMMCYKRNRATRVECTTIVNGVRRSFYVYANGGKGFCKLHNWNCVNCDTFCA GSTFISDEVARDLSLQFKRPINPTDQSSYIVDSVTVKNGSIHLYFDKAGQKTYERHSLSH FVNLDNLRANNTKGSLPINVIVFDGKSKCEESSAKSASVYYSQLMCQPILLLDQALVSDV GDSAEVAVKMFDAYVNTFSSTFNVPMEKLKTLVATAEAELAKNVSLDNVLSTFISAARQG FVDSDVETKDVVECLKLSHQSDIEVTGDSCNNYMLTYNKVENMTPRDLGACIDCSARHIN AQVAKSHNIALIWNVKDFMSLSEQLRKQIRSAAKKNNLPFKLTCATTRQVVNVVTTKIAL KGGKIVNNWLKQLIKVTLVFLFVAAIFYLITPVHVMSKHTDFSSEIIGYKAIDGGVTRDI ASTDTCFANKHADFDTWFSQRGGSYTNDKACPLIAAVITREVGFVVPGLPGTILRTTNGD FLHFLPRVFSAVGNICYTPSKLIEYTDFATSACVLAAECTIFKDASGKPVPYCYDTNVLE GSVAYESLRPDTRYVLMDGSIIQFPNTYLEGSVRVVTTFDSEYCRHGTCERSEAGVCVST SGRWVLNNDYYRSLPGVFCGVDAVNLLTNMFTPLIQPIGALDISASIVAGGIVAIVVTCL AYYFMRFRRAFGEYSHVVAFNTLLFLMSFTVLCLTPVYSFLPGVYSVIYLYLTFYLTNDV SFLAHIQWMVMFTPLVPFWITIAYIICISTKHFYWFFSNYLKRRVVFNGVSFSTFEEAAL CTFLLNKEMYLKLRSDVLLPLTQYNRYLALYNKYKYFSGAMDTTSYREAACCHLAKALND FSNSGSDVLYQPPQTSITSAVLQSGFRKMAFPSGKVEGCMVQVTCGTTTLNGLWLDDVVY CPRHVICTSEDMLNPNYEDLLIRKSNHNFLVQAGNVQLRVIGHSMQNCVLKLKVDTANPK TPKYKFVRIQPGQTFSVLACYNGSPSGVYQCAMRPNFTIKGSFLNGSCGSVGFNIDYDCV SFCYMHHMELPTGVHAGTDLEGNFYGPFVDRQTAQAAGTDTTITVNVLAWLYAAVINGDR WFLNRFTTTLNDFNLVAMKYNYEPLTQDHVDILGPLSAQTGIAVLDMCASLKELLQNGMN GRTILGSALLEDEFTPFDVVRQCSGVTFQSAVKRTIKGTHHWLLLTILTSLLVLVQSTQW SLFFFLYENAFLPFAMGIIAMSAFAMMFVKHKHAFLCLFLLPSLATVAYFNMVYMPASWV MRIMTWLDMVDTSLSGFKLKDCVMYASAVVLLILMTARTVYDDGARRVWTLMNVLTLVYK VYYGNALDQAISMWALIISVTSNYSGVVTTVMFLARGIVFMCVEYCPIFFITGNTLQCIM LVYCFLGYFCTCYFGLFCLLNRYFRLTLGVYDYLVSTQEFRYMNSQGLLPPKNSIDAFKL NIKLLGVGGKPCIKVATVQSKMSDVKCTSVVLLSVLQQLRVESSSKLWAQCVQLHNDILL AKDTTEAFEKMVSLLSVLLSMQGAVDINKLCEEMLDNRATLQAIASEFSSLPSYAAFATA QEAYEQAVANGDSEVVLKKLKKSLNVAKSEFDRDAAMQRKLEKMADQAMTQMYKQARSED KRAKVTSAMQTMLFTMLRKLDNDALNNIINNARDGCVPLNIIPLTTAAKLMVVIPDYNTY KNTCDGTTFTYASALWEIQQVVDADSKIVQLSEISMDNSPNLAWPLIVTALRANSAVKLQ NNELSPVALRQMSCAAGTTQTACTDDNALAYYNTTKGGRFVLALLSDLQDLKWARFPKSD GTGTIYTELEPPCRFVTDTPKGPKVKYLYFIKGLNNLNRGMVLGSLAATVRLQAGNATEV PANSTVLSFCAFAVDAAKAYKDYLASGGQPITNCVKMLCTHTGTGQAITVTPEANMDQES FGGASCCLYCRCHIDHPNPKGFCDLKGKYVQIPTTCANDPVGFTLKNTVCTVCGMWKGYG CSCDQLREPMLQSADAQSFLNGFAV
experiment.sample.molecule[0].mw33.8
experiment.sample.molecule[0].total_mw67.6
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_descriptionM protease of SARS CoV-2 with an inhouse compound JL-352 ( incubated for 30 minutes). The compounds showed significant reduction in the activity of M protease protein. The protein is essential in the viral polyprotein activation. The protein activate the entire the polyprotein of the virus inside the host cell.
experiment.sample.buffer.name50mM Tris, 200mM 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.nameM protease of SARS CoV-2 with JL-352 compound
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].addressIndia
experiment.contributor[0].affiliation[0].full_nameCSIR - Central Drug Research Institute
experiment.contributor[0].affiliation[0].webpagehttps://cdri.res.in/
experiment.contributor[0].contributor_nameRaja
experiment.contributor[0].contributor_surnameTripathi
experiment.contributor[0].orcidhttps://orcid.org/0009-0005-2493-1007
experiment.concentration_methodnull
experiment.concentration_unitnull
experiment.date2021-03-26
experiment.storage_temperature-20.0
experiment.cell_temperature10.0
experiment.exposure_time1800.0
experiment.number_of_frames2
experiment.wavelength0.154
experiment.sample_detector_distance0.317
experiment.concentration_minnull
experiment.concentration_max5.0
experiment.sample_volumenull
experiment.flow_ratenull
experiment.s_min0.12
experiment.s_max3.98
experiment.total_exposure_timenull
experiment.seccolumnnull
fits[]
estimated_volume_methodnull
pddf_softwareATSAS GNOM
pddf_software_version5.0
i0_calibration_standardnull
descriptionM protease of SARS-CoV-2 was purified using Ni-NTA affinity columns, and further purification was done using Size Exclusion Chromatography. The purified protein was then incubated with JL-352 for 30 minutes before SAXS analysis.
experiment_descriptionnull
tags[]
intensity_unitarbitrary
experimental_mw74.32
experimental_mw_errornull
guinier_i0_mwnull
guinier_i0_mw_errornull
porod_mw170.0
porod_mw_errornull
pddf_i051480.0
pddf_i0_errornull
guinier_i055753.1
guinier_i0_errornull
pddf_rg4.336
pddf_rg_errornull
guinier_rg4.654
guinier_rg_error1.01
pddf_dmax12.32
pddf_dmax_errornull
porod_volume271.0
porod_volume_errornull
estimated_volumenull
estimated_volume_errornull
guinier_point_first1
guinier_point_last23
pddf_point_firstnull
pddf_point_lastnull
i0_calibration_standard_datanull
intensities_log_log_plotSASDXY6_datloglog_img.png
symmetrynull
last_modified2026-05-09T06:52:00.898097+02:00
bragg_peak[]
manifest.json:34 field values
Field pathRaw value
codeSASDXY6
statussuccess
started_at2026-08-11T15:19:11.749337+00:00
finished_at2026-08-11T15:19:18.764693+00:00
source_last_modified2026-05-09T06:52:00.898097+02:00
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View the complete summary.json source
{
  "code": "SASDXY6",
  "status": "Published",
  "type_of_curve": "Single concentration",
  "angular_unit": "1/nm",
  "project": {
    "title": "M protease SARS CoV-2 with JL-352",
    "publication": null,
    "status": "released",
    "submitted_date": "2025-07-22",
    "released_date": "2026-05-09"
  },
  "pddf_data": "https://www.sasbdb.org/media/p_of_R_files/SASDXY6.out",
  "intensities_data": "https://www.sasbdb.org/media/intensities_files/SASDXY6.dat",
  "intensities_log_plot": "https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDXY6_dat_img.png",
  "intensities_kratky_plot": "https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDXY6_kratky_img.png",
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  "intensities_guinier_plot": "https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDXY6_guinier_img.png",
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  "experiment": {
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      },
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      "line_collimation_integrationwidth": null,
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      "beam_profile_al": null
    },
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          "molecule_description": "M protease of SARS CoV-2 with an inhouse compound JL-352 ( incubated for 30 minutes). The compounds showed significant reduction in the activity of M protease protein. The protein is essential in the viral polyprotein activation. The protein activate the entire the polyprotein of the virus inside the host cell."
        }
      ],
      "buffer": {
        "name": "50mM Tris, 200mM NaCl",
        "concentration_unit": null,
        "comment": null,
        "additive": null,
        "concentration": null,
        "pka": null,
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        "deuteration": null
      },
      "purity_method": null,
      "name": "M protease of SARS CoV-2 with JL-352 compound",
      "ext_coefficient": null,
      "contrast": null,
      "specific_vol": null,
      "dry_vol": null,
      "absorbption": null,
      "deuteration": null,
      "mixture": null
    },
    "contributor": [
      {
        "affiliation": [
          {
            "short_name": null,
            "address": "India",
            "full_name": "CSIR - Central Drug Research Institute",
            "webpage": "https://cdri.res.in/"
          }
        ],
        "contributor_name": "Raja",
        "contributor_surname": "Tripathi",
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      }
    ],
    "concentration_method": null,
    "concentration_unit": null,
    "date": "2021-03-26",
    "storage_temperature": -20.0,
    "cell_temperature": 10.0,
    "exposure_time": 1800.0,
    "number_of_frames": 2,
    "wavelength": 0.154,
    "sample_detector_distance": 0.317,
    "concentration_min": null,
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    "flow_rate": null,
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    "total_exposure_time": null,
    "seccolumn": null
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  "description": "M protease of SARS-CoV-2 was purified using Ni-NTA affinity columns, and further purification was done using Size Exclusion Chromatography. The purified protein was then incubated with JL-352 for 30 minutes before SAXS analysis.",
  "experiment_description": null,
  "tags": [],
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  "intensities_log_log_plot": "SASDXY6_datloglog_img.png",
  "symmetry": null,
  "last_modified": "2026-05-09T06:52:00.898097+02:00",
  "bragg_peak": []
}
View the complete manifest.json source
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  "finished_at": "2026-08-11T15:19:18.764693+00:00",
  "source_last_modified": "2026-05-09T06:52:00.898097+02:00",
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