Length-Dependent Formation of Transmembrane Pores by 310-Helical α-Aminoisobutyric Acid Foldamers.
Jones, Jennifer E.; Diemer, Vincent; Adam, Catherine; Raftery, James; Ruscoe, Rebecca E.; Sengel, Jason T.; Wallace, Mark I.; Bader, Antoine; Cockroft, Scott L.; Clayden, Jonathan; Webb, Simon J.; Journal of the American Chemical Society 138 (2016) 688–695; doi:10.1021/jacs.5b12057

data_4124888
_publ_section_title
;
 Length-Dependent Formation of Transmembrane Pores by 310-Helical
 \a-Aminoisobutyric Acid Foldamers.
;
_journal_issue                   2
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              688
_journal_page_last               695
_journal_paper_doi               10.1021/jacs.5b12057
_journal_volume                  138
_journal_year                    2016
_chemical_formula_sum            'C39 H71 N11 O9 Si'
_chemical_formula_weight         866.16
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                88.577(2)
_cell_angle_beta                 75.902(2)
_cell_angle_gamma                73.812(2)
_cell_formula_units_Z            2
_cell_length_a                   9.3622(3)
_cell_length_b                   16.3312(4)
_cell_length_c                   17.9089(6)
_cell_measurement_reflns_used    3417
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.88
_cell_measurement_theta_min      2.55
_cell_volume                     2547.70(14)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.962
_diffrn_measured_fraction_theta_max 0.955
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0524
_diffrn_reflns_av_sigmaI/netI    0.0673
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            21178
_diffrn_reflns_theta_full        67.00
_diffrn_reflns_theta_max         70.23
_diffrn_reflns_theta_min         2.55
_exptl_absorpt_coefficient_mu    0.876
_exptl_absorpt_correction_T_max  0.9412
_exptl_absorpt_correction_T_min  0.840121
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.129
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.07
_refine_diff_density_max         2.082
_refine_diff_density_min         -0.675
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     561
_refine_ls_number_reflns         9254
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.1002
_refine_ls_R_factor_gt           0.0801
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1101P)^2^+2.9592P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2198
_refine_ls_wR_factor_ref         0.2372
_reflns_number_gt                6997
_reflns_number_total             9254
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja5b12057_si_002.cif
_cod_data_source_block           s4005oa
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_cell_volume        2547.70(13)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4124888