Use of pyridazinediones for tuneable and reversible covalent cysteine modification applied to peptides, proteins and hydrogels.
Rochet, Léa N C; Bahou, Calise; Wojciechowski, Jonathan P.; Koutsopetras, Ilias; Britton, Phyllida; Spears, Richard J.; Thanasi, Ioanna A.; Shao, Baihao; Zhong, Lisha; Bučar, Dejan-Krešimir; Aliev, Abil E.; Porter, Michael J.; Stevens, Molly M.; Baker, James R.; Chudasama, Vijay; Chemical science 14 (2023) 13743–13754; doi:10.1039/d3sc04976k

data_1570233
_publ_section_title
;
 Use of pyridazinediones for tuneable and reversible covalent cysteine
 modification applied to peptides, proteins and hydrogels.
;
_journal_issue                   47
_journal_name_full               'Chemical science'
_journal_page_first              13743
_journal_page_last               13754
_journal_paper_doi               10.1039/d3sc04976k
_journal_volume                  14
_journal_year                    2023
_chemical_formula_moiety         'C12 H12 N2 O2'
_chemical_formula_sum            'C12 H12 N2 O2'
_chemical_formula_weight         216.24
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     'dual-space method (Sheldrick et al., 2001)'
_atom_sites_solution_secondary   notdet
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2023-09-19 deposited with the CCDC.	2023-10-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 106.9280(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.96490(10)
_cell_length_b                   8.25850(10)
_cell_length_c                   20.8574(2)
_cell_measurement_reflns_used    27976
_cell_measurement_temperature    150.0(1)
_cell_measurement_theta_max      78.3880
_cell_measurement_theta_min      3.5590
_cell_volume                     2136.45(4)
_computing_cell_refinement       'CrysAlisPro 1.171.42.60a (Rigaku OD, 2022)'
_computing_data_collection       'CrysAlisPro 1.171.42.60a (Rigaku OD, 2022)'
_computing_data_reduction        'CrysAlisPro 1.171.42.60a (Rigaku OD, 2022)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      150.0(1)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            'HyPix-Arc 100'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type
'SuperNova, Dual, Cu at home/near, HyPix-Arc 100'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0286
_diffrn_reflns_av_unetI/netI     0.0126
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            49635
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        66.601
_diffrn_reflns_theta_max         66.601
_diffrn_reflns_theta_min         3.564
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    0.763
_exptl_absorpt_correction_T_max  0.937
_exptl_absorpt_correction_T_min  0.908
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.42.49 (Rigaku Oxford Diffraction, 2022)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_description       block
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.123
_refine_diff_density_min         -0.223
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         3775
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0372
_refine_ls_R_factor_gt           0.0334
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0522P)^2^+0.4339P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0909
_refine_ls_wR_factor_ref         0.0936
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3373
_reflns_number_total             3775
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc04976k2.cif
_cod_data_source_block           3
_cod_depositor_comments          'Adding full bibliography for 1570233.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1570233
_shelx_shelxl_version_number     2018/3
_shelx_res_checksum              83469