{"code":"SASDVZ7","status":"Published","type_of_curve":"SEC-SAS","angular_unit":"1/A","project":{"title":"Insights into the stereochemical mechanism of the B(12)-dependent radical SAM glutamine C- methyltransferase (QCMT).","publication":{"title":"Insights into the stereochemical mechanism of the B(12)-dependent radical SAM glutamine C- methyltransferase (QCMT).","author_list":"Bourdin T, Guillot A, Mauger M, Lefranc B, Gervason S, Glousieau M, Grimaldi S, Leprince J, Thureau A, Benjdia A, Berteau O","journal":"Commun Biol","doi":"10.1038/s42003-026-10234-8","pmid":"42168528","published_date":"2026 May 21"},"status":"released","submitted_date":"2024-05-17","released_date":"2026-05-17"},"pddf_data":"https://www.sasbdb.org/media/p_of_R_files/SASDVZ7.out","intensities_data":"https://www.sasbdb.org/media/intensities_files/SASDVZ7_fit1.dat","intensities_log_plot":"https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDVZ7_fit1_dat_img.png","intensities_kratky_plot":"https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDVZ7_fit1_kratky_img.png","pddf_plot":"https://www.sasbdb.org/media/p_of_R_files/pofr_images/SASDVZ7_pofr_img.png","intensities_guinier_plot":"https://www.sasbdb.org/media/intensities_files/scattering_plots/SASDVZ7_fit1_guinier_img.png","sascif_data":"https://www.sasbdb.org/media/sascif/sascif_files/SASDVZ7.sascif","experiment":{"instrument":{"detector":{"type":null,"name":"Eiger 4M","resolution":75.0},"name":"SOLEIL","city":"Saint-Aubin","country":"France","beamline_name":"SWING","beam_geometry":null,"type_of_source":"X-ray synchrotron","point_source":null,"line_collimation":null,"sample_path_length":null,"line_collimation_slitlength":null,"line_collimation_integrationwidth":null,"xray_energy":null,"beam_profile_ah":null,"beam_profile_al":null},"sample":{"molecule":[{"long_name":"B12-binding domain/radical SAM domain protein, MJ_0865 family","short_name":"QCMTMe","sequence":"MDITIFSPGIYTYGAMLIGGVLRDAGHEVTLTRTPEVPEGSLLLASLFST\r\nQHLLDPKIRSLVRRHRERGGTVYVGGPVSAVPEIVLRELAPDAVVVGEGE\r\nETVVRLAEEGASETLPGIAYLDGDQAVVTAPAPPAPIDRPLPLIPEDIGS\r\nQSIRGASAYIETHRGCIGGCTFCQVPRFFGREVRSRPLESIIEEVKAFRA\r\nAGAKRLSISGGTGSLYGSHGCEMNPGAFIALLRGMAEVMGPKNVSAPDIR\r\nVDCITDEILDAIRQYTIGWVFFGIESGSNRVLRQMGKGATVREVEEAVER\r\nCREHGLHVAGSFIVGYPGETERDYEATKDLVAALSLDDVFISSAEPIPGT\r\nPLADLVIRTPRDKNPAFMPHTGEYRALHLTESEARCFDLMMHADMYRPQI\r\nRLVTDEVYAAYLAEAKKQGEDIRAATELILRYAQR","organism":"Methanoculleus thermophilus","uniprot_code":"WP_0669576","uniprot_range_first":1,"uniprot_range_last":435,"oligomerization":"monomer","molecular_type":"protein","uniprot_sequence":"MDITIFSPGIYTYGAMLIGGVLRDAGHEVTLTRTPEVPEGSLLLASLFSTQHLLDPKIRS\r\nLVRRHRERGGTVYVGGPVSAVPEIVLRELAPDAVVVGEGEETVVRLAEEGASETLPGIAY\r\nLDGDQAVVTAPAPPAPIDRPLPLIPEDIGSQSIRGASAYIETHRGCIGGCTFCQVPRFFG\r\nREVRSRPLESIIEEVKAFRAAGAKRLSISGGTGSLYGSHGCEMNPGAFIALLRGMAEVMG\r\nPKNVSAPDIRVDCITDEILDAIRQYTIGWVFFGIESGSNRVLRQMGKGATVREVEEAVER\r\nCREHGLHVAGSFIVGYPGETERDYEATKDLVAALSLDDVFISSAEPIPGTPLADLVIRTP\r\nRDKNPAFMPHTGEYRALHLTESEARCFDLMMHADMYRPQIRLVTDEVYAAYLAEAKKQGE\r\nDIRAATELILRYAQR","mw":49.962,"total_mw":49.962,"number_molecules":1,"complex_state":false,"deuteration":null,"molecule_source":"biological","molecule_description":"Apo protein with an Fe-S cluster. The protein construct used for SAXS contains an additional amino acid extension at the N-terminus (MASWSHPQFEKSGGGGGENLYFQGH)."}],"buffer":{"name":"50 mM Tris, 300 mM NaCl, 5% glycerol","concentration_unit":null,"comment":null,"additive":null,"concentration":null,"pka":null,"ph":8.0,"deuteration":null},"purity_method":null,"name":"Glutamine C‐methyltransferase with cobalamin from Methanoculleus thermophilus","ext_coefficient":null,"contrast":null,"specific_vol":null,"dry_vol":null,"absorbption":null,"deuteration":null,"mixture":null},"contributor":[{"affiliation":[{"short_name":"Soleil","address":"Saint-Aubin, France","full_name":"Soleil Synchrotron","webpage":"http://www.synchrotron-soleil.fr/"}],"contributor_name":"Aurélien","contributor_surname":"Thureau","orcid":null}],"concentration_method":null,"concentration_unit":null,"date":"2024-09-18","storage_temperature":6.0,"cell_temperature":20.0,"exposure_time":0.99,"number_of_frames":646,"wavelength":0.1033,"sample_detector_distance":2.0,"concentration_min":null,"concentration_max":5.0,"sample_volume":50.0,"flow_rate":0.25,"s_min":0.036,"s_max":5.0,"total_exposure_time":null,"seccolumn":46},"fits":[{"models":[{"model_plot":"https://www.sasbdb.org/media/pdb_file/images/SASDVZ7_fit1_model1_img.png","software":"AlphaFold","pdb_link":[],"model_title":null,"type_of_model":"atomic","software_version":null,"model_data":"https://www.sasbdb.org/media/pdb_file/SASDVZ7_fit1_model1.pdb","model_mw":54.41,"bead_radius":null,"log":null,"symmetry":null,"comment":null,"user":91}],"fit_unit":"1/A","fit_plot":"https://www.sasbdb.org/media/fitting_files/scattering_plots/SASDVZ7_fit1_fixed_fit_img.png","software":"CRYSOL","chi_square_value":0.983,"p_value":0.0638,"fit_residual_plot":"SASDVZ7_fit1_fitresiduals_img.png","fit_data":"https://www.sasbdb.org/media/fitting_files/SASDVZ7_fit1.fit","fit_log":null,"software_version":null,"description":""}],"estimated_volume_method":null,"pddf_software":"ATSAS GNOM","pddf_software_version":null,"i0_calibration_standard":null,"description":null,"experiment_description":"Synchrotron SAXS data from solutions of glutamine C‐methyltransferase with cobalamin in 50 mM Tris, 300 mM NaCl, 5% glycerol, pH 8 were collected on the SWING beam line at SOLEIL (Saint-Aubin, France) using a Eiger 4M detector at a sample-detector distance of 2 m and at a wavelength of λ = 0.1033 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A 50.00 μl sample at 5 mg/ml was injected at a 0.25 ml/min flow rate onto a Cytiva Superdex 200 5/150 column at 20°C. 646 successive 0.990 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.","tags":[],"intensity_unit":"arbitrary","experimental_mw":51.6,"experimental_mw_error":null,"guinier_i0_mw":null,"guinier_i0_mw_error":null,"porod_mw":49.0,"porod_mw_error":null,"pddf_i0":0.03073,"pddf_i0_error":null,"guinier_i0":0.0215079,"guinier_i0_error":null,"pddf_rg":2.54,"pddf_rg_error":null,"guinier_rg":2.54,"guinier_rg_error":0.067,"pddf_dmax":10.1,"pddf_dmax_error":null,"porod_volume":78.0,"porod_volume_error":null,"estimated_volume":null,"estimated_volume_error":null,"guinier_point_first":4,"guinier_point_last":96,"pddf_point_first":null,"pddf_point_last":null,"i0_calibration_standard_data":null,"intensities_log_log_plot":"SASDVZ7_fit1_datloglog_img.png","symmetry":null,"last_modified":"2026-05-27T09:45:48.304259+02:00","bragg_peak":[]}