2BWW

His350Ala Escherichia coli Aminopeptidase P

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2BHC	PDB ENTRY 2BHC

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	SITTING DROP VAPOUR DIFFUSION AT 4C. 2 UL 7 MG/ML APPRO PLUS 2 UL RESERVOIR SOLUTION: 28% MPD, 0.1 M CITRATE PH 7.5, 0.2 M MGACETATE. SOAKED IN RESERVOIR SOLUTION SUPPLEMENTED WITH 1 MM MNCL2 FOR 30 MIN AT 4C PRIOR TO CRYOCOOLING.

Crystal Properties
Matthews coefficient	Solvent content
5.6	77.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 138.17	α = 90
b = 138.17	β = 90
c = 231.296	γ = 90

Symmetry
Space Group	I 41 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	100	IMAGE PLATE	MARRESEARCH	OSMIC MIRRORS	2005-06-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200H

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	2.6	74.54	97.2	0.11	14	5.4		33663		6	58.02

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	2.6	2.74	86.6		0.59	2.4	4.6

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	PDB ENTRY 2BHC	2.61	69.67	32029	1630	98.4	0.174	0.172	0.204	RANDOM	44.33

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]
1.33			1.33		-2.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.004
r_dihedral_angle_4_deg	17.661
r_dihedral_angle_3_deg	13.805
r_dihedral_angle_1_deg	5.898
r_scangle_it	2.662
r_scbond_it	1.66
r_angle_refined_deg	1.181
r_mcangle_it	1.147
r_mcbond_it	0.756
r_angle_other_deg	0.754
r_symmetry_vdw_refined	0.305
r_symmetry_vdw_other	0.284
r_nbd_refined	0.207
r_nbtor_refined	0.178
r_nbd_other	0.17
r_xyhbond_nbd_refined	0.132
r_symmetry_hbond_refined	0.107
r_nbtor_other	0.08
r_chiral_restr	0.065
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
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_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3484
Nucleic Acid Atoms
Solvent Atoms	152
Heterogen Atoms	24

Software

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