4GBN | pdb_00004gbn

Crystal structure of aspart insulin at pH 6.5

X-RAY DIFFRACTION

---

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	2 uL mother liquor (0.1 M MES monohydrate, pH 6.5, 1.6 M magnesium sulfate heptahydrate) + 2 uL protein (aspart insulin, 100 U/mL), VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.89	34.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.71	α = 90
b = 78.71	β = 90
c = 37.04	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	CCD	OXFORD TITAN CCD		2012-07-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OXFORD DIFFRACTION ENHANCE ULTRA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.872	39.355	97.7	0.052	7.8	1.7	6889	6889

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	1.872	1.97	91.7		0.272	0.272	2.4	1.2	955

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ZEH	1.872	39.355	6888	334	97.63	0.1664	0.1639	0.1705	0.214	0.2196	RANDOM	31.7913

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]
-3.54			-3.54		7.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	42.665
r_dihedral_angle_3_deg	17.608
r_dihedral_angle_4_deg	8.609
r_dihedral_angle_1_deg	7.685
r_angle_refined_deg	2.024
r_angle_other_deg	1.351
r_chiral_restr	0.153
r_bond_refined_d	0.02
r_gen_planes_refined	0.009
r_bond_other_d	0.004
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	803
Nucleic Acid Atoms
Solvent Atoms	31
Heterogen Atoms	20

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction