4IUZ

High resolution crystal structure of racemic ester insulin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	3.6	292	5 mg/mL protein, 0.05 M citric acid, 38% v/v PEG200, pH 3.6, VAPOR DIFFUSION, HANGING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
1.61	23.79

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 20.495	α = 96.42
b = 27.757	β = 98.6
c = 34.765	γ = 104.46

Symmetry
Space Group	P -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	ADSC QUANTUM 315		2011-11-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.97921	APS	24-ID-E

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	1.6	50	89.3	0.048	34.5	4	9561	8573		-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	1.6	1.64	85.3		0.487	3.5	4.1	384

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 3E7Y	1.6	33.95	8572	426	89.67	0.2222	0.2208	0.2495	RANDOM	29.4458

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]
-1.25	0.06	0.31	0.57	0.38	0.88

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.36
r_dihedral_angle_4_deg	38.645
r_dihedral_angle_3_deg	15.429
r_scangle_it	8.212
r_dihedral_angle_1_deg	6.66
r_scbond_it	5.299
r_mcangle_it	4.308
r_rigid_bond_restr	2.874
r_mcbond_it	2.626
r_angle_refined_deg	2.036
r_chiral_restr	0.142
r_bond_refined_d	0.023
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	402
Nucleic Acid Atoms
Solvent Atoms	14
Heterogen Atoms	20

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing