3ILG

Crystal structure of humnan insulin Sr+2 complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.8	293	0.1M Sodium Citrate, 1M Ammonium Sulphate, 0.1M Strontium Chloride, pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
1.84	33.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.298	α = 90
b = 81.298	β = 90
c = 33.734	γ = 120

Symmetry
Space Group	H 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate	Mirror	2008-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.9	30	99	0.0672	0.0573	8.1	5.3	6573	6243			36.08

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.9	1.97	100		0.1745	0.1643	2.5	5.2	6573

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	1MSO	1.9	16.9	6573	6243	303	99.76	0.19529	0.19154	0.27804	RANDOM	25.11

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.158
r_dihedral_angle_3_deg	16.525
r_dihedral_angle_1_deg	6.7
r_scangle_it	4.638
r_scbond_it	3.291
r_mcangle_it	2.275
r_angle_refined_deg	1.67
r_mcbond_it	1.243
r_dihedral_angle_4_deg	1.056
r_metal_ion_refined	0.396
r_symmetry_hbond_refined	0.396
r_symmetry_metal_ion_refined	0.395
r_symmetry_vdw_refined	0.372
r_nbtor_refined	0.307
r_nbd_refined	0.245
r_xyhbond_nbd_refined	0.244
r_chiral_restr	0.102
r_bond_refined_d	0.019
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	810
Nucleic Acid Atoms
Solvent Atoms	57
Heterogen Atoms	2

Software

Software
Software Name	Purpose
MAR345dtb	data collection
AMoRE	phasing
REFMAC	refinement
AUTOMAR	data reduction