Purine 3':5'-cyclic nucleotides with the nucleobase in a <i>syn</i> orientation: cAMP, cGMP and cIMP
Ślepokura, Katarzyna Anna; Acta Crystallographica Section C 72 (2016) –; doi:10.1107/S2053229616006999

data_2020505
_publ_section_title
;
 Purine 3':5'-cyclic nucleotides with the nucleobase in a <i>syn</i>
 orientation: cAMP, cGMP and cIMP
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2053229616006999
_journal_volume                  72
_journal_year                    2016
_chemical_formula_iupac          'Na +, C10 H11 N5 O7 P -, 4H2 O'
_chemical_formula_moiety         'Na +, C10 H11 N5 O7 P -, 4(H2 O)'
_chemical_formula_sum            'C10 H19 N5 Na O11 P'
_chemical_formula_weight         439.26
_chemical_name_common
;
Guanosine 3':5'-cyclic phosphate sodium salt tetrahydrate
;
_chemical_name_systematic
;
Guanosine 3':5'-cyclic phosphate sodium salt tetrahydrate
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.206(2)
_cell_length_b                   12.669(3)
_cell_length_c                   18.754(3)
_cell_measurement_reflns_used    22354
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      38.54
_cell_measurement_theta_min      4.79
_cell_volume                     1712.1(7)
_computing_cell_refinement
;
CrysAlis PRO (Agilent, 2012)
;
_computing_data_collection
;
CrysAlis PRO (Agilent, 2012)
;
_computing_data_reduction
;
CrysAlis PRO (Agilent, 2012)
;
_computing_molecular_graphics
;
DIAMOND (Brandenburg, 2014)
;
_computing_publication_material
;
PLATON (Spek, 2009)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.1956
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type
;
Oxford Diffraction Xcalibur PX \k-geometry diffractometer
with an Onyx CCD camera
;
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0256
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            32323
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         35.000
_diffrn_reflns_theta_min         4.805
_exptl_absorpt_coefficient_mu    0.259
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.949
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(CrysAlis PRO; Agilent, 2012)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.704
_exptl_crystal_description       block
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.416
_refine_diff_density_min         -0.429
_refine_ls_abs_structure_details
;
Flack <i>x</i> determined using 3048 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons <i>et al.</i>,  2013)
;
_refine_ls_abs_structure_Flack   -0.031(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         7524
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.0309
_refine_ls_R_factor_gt           0.0284
_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^)+(0.0402P)^2^+0.2589P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0735
_refine_ls_wR_factor_ref         0.0750
_reflns_number_gt                7142
_reflns_number_total             7524
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            sk3622sup1.cif
_cod_data_source_block           IV_gmpna
_cod_database_code               2020505
_shelx_estimated_absorpt_t_min   0.904
_shelx_estimated_absorpt_t_max   0.970
_shelx_hkl_checksum              14771
_shelx_res_checksum              63407
_cod_database_fobs_code 2020505