1WL6

Mg-substituted form of E. coli aminopeptidase P

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		NATIVE AMINOPEPTIDASE P WITHOUT HETATOMS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			TRIS, PEG 4000, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
4.4	72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 177.733	α = 90
b = 177.733	β = 90
c = 96.484	γ = 120

Symmetry
Space Group	P 64 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	113	IMAGE PLATE	RIGAKU RAXIS IIC	YALE MIRRORS	1998-08-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2	42.26	92.4	26.53		56174	56174		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.05	64.2		5.39

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	FOURIER SYNTHESIS	THROUGHOUT	NATIVE AMINOPEPTIDASE P WITHOUT HETATOMS	2	42.26	54464	54464	1708	92.44	0.14832	0.14751	0.17336	RANDOM	17.504

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]
-0.13	-0.06		-0.13		0.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.765
r_dihedral_angle_4_deg	15.015
r_dihedral_angle_3_deg	12.207
r_dihedral_angle_1_deg	6.003
r_scangle_it	3.878
r_mcangle_it	2.695
r_scbond_it	2.53
r_mcbond_it	2.371
r_angle_refined_deg	1.296
r_angle_other_deg	0.797
r_mcbond_other	0.57
r_symmetry_vdw_other	0.283
r_symmetry_vdw_refined	0.282
r_nbd_refined	0.207
r_nbd_other	0.181
r_nbtor_refined	0.176
r_symmetry_hbond_refined	0.16
r_xyhbond_nbd_refined	0.145
r_nbtor_other	0.081
r_chiral_restr	0.074
r_bond_refined_d	0.011
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3499
Nucleic Acid Atoms
Solvent Atoms	599
Heterogen Atoms	43

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling