2V95

Structure of Corticosteroid-Binding Globulin in complex with Cortisol

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1QLP	PDB ENTRY 1QLP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.5		1 MICROLITER OF 15 MG/ML RECOMBINANT RAT CBG AND 1 MICROLITER OF RESERVOIR SOLUTION (30% (W/V) PEG 4000, 300 MM LI2SO4, 100 MM TRIS-HCL, PH 8.5) AGAINST 700 MICROLITER OF RESERVOIR SOLUTION

Crystal Properties
Matthews coefficient	Solvent content
2.37	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 122.11	α = 90
b = 54.25	β = 97.16
c = 61.04	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARRESEARCH	MIRROR		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1		BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.93	40	96.9	0.07	15.3	4.7		29097		3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.93	2.06	96		0.65	3	4.73

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1QLP	1.93	37.42	26770	2328	100	0.214	0.21	0.264	RANDOM	31.44

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
-1.35		-1.14	3.6		-2.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.071
r_dihedral_angle_3_deg	16.254
r_dihedral_angle_4_deg	15.47
r_dihedral_angle_1_deg	6.926
r_scangle_it	2.085
r_scbond_it	1.65
r_angle_refined_deg	1.478
r_mcangle_it	0.971
r_angle_other_deg	0.886
r_mcbond_it	0.807
r_symmetry_vdw_refined	0.324
r_symmetry_hbond_refined	0.282
r_symmetry_vdw_other	0.206
r_nbd_refined	0.204
r_xyhbond_nbd_refined	0.189
r_nbd_other	0.184
r_nbtor_refined	0.184
r_nbtor_other	0.089
r_chiral_restr	0.084
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2738
Nucleic Acid Atoms
Solvent Atoms	174
Heterogen Atoms	26

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
AMoRE	phasing