Experiment: 2DQ6

Crystal Structure of Aminopeptidase N from Escherichia coli

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.4	297	1.75M ammonium sulfate, 0.1M MES pH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 297K

Crystal Properties
Matthews coefficient	Solvent content
3.61	65.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 120.48	α = 90
b = 120.48	β = 90
c = 170.791	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	100	CCD	ADSC QUANTUM 210		2006-01-01
2	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV	confocal mirror	2005-01-22	M	SINGLE WAVELENGTH
3	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV	confocal mirror	2005-01-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	1.000	Photon Factory	AR-NW12A
2	ROTATING ANODE	RIGAKU	1.5418
3	ROTATING ANODE	RIGAKU	1.5418

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
2,3	1.5	50	100	0.046	55.2	9.5	228266	228266

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)
	1.5	1.55	100		0.299	4.5	6.1	22644

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	THROUGHOUT	1.5	20	228084	228084	11430		0.181	0.1806	0.191	0.19	random	17.5

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
c_dihedral_angle_d	22.6
c_angle_deg	1.29
c_improper_angle_d	0.789
c_bond_d	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6933
Nucleic Acid Atoms
Solvent Atoms	1127
Heterogen Atoms	6

Software

Software
Software Name	Purpose
ADSC	data collection
HKL-2000	data reduction
SOLVE	phasing
CNS	refinement
HKL-2000	data scaling