3W80

Crystal structure of dodecamer human insulin with double C-axis length of the hexamer 2 Zn insulin cell

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.67	293	10mg/ml protein, 0.1M Sodium Citrate, 22%(v/v) DMF, 0.08%(w/v) Zinc chloride, pH 8.67, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.93	36.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.72	α = 90
b = 82.72	β = 90
c = 68.14	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	Fully automatic high speed Weissenberg data collection system called Galaxy	The vertically focusing 1m long bent mirror of Pt-coated fused silica is 21m from the SR source point and 7m from the focus point	2003-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-6C	1.00	Photon Factory	BL-6C

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	50		0.05476		4.46		90240

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	3w7y	1.4	10	32370	1700	99.46	0.18539	0.1822	0.24845	RANDOM	24.619

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]
0.05	0.05		0.05		-0.15

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	49.868
r_dihedral_angle_2_deg	35.54
r_sphericity_bonded	22.922
r_dihedral_angle_3_deg	11.746
r_dihedral_angle_4_deg	6.368
r_dihedral_angle_1_deg	5.562
r_rigid_bond_restr	2.889
r_angle_refined_deg	1.258
r_chiral_restr	0.082
r_bond_refined_d	0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	49.868
r_dihedral_angle_2_deg	35.54
r_sphericity_bonded	22.922
r_dihedral_angle_3_deg	11.746
r_dihedral_angle_4_deg	6.368
r_dihedral_angle_1_deg	5.562
r_rigid_bond_restr	2.889
r_angle_refined_deg	1.258
r_chiral_restr	0.082
r_bond_refined_d	0.01
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1620
Nucleic Acid Atoms
Solvent Atoms	331
Heterogen Atoms	4

Software

Software
Software Name	Purpose
WEIS	data scaling
CCP4	model building
REFMAC	refinement
WEIS	data reduction
CCP4	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.