2WPB

Crystal structure of the E192N mutant of E. Coli N-acetylneuraminic acid lyase in complex with pyruvate and the inhibitor (2R,3R)-2,3,4- trihydroxy-N,N-dipropylbutanamide in space group P21 crystal form I

X-RAY DIFFRACTION

---

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.2		100MM TRIS-HCL PH 8.2, 200 MM NACL, 18% PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.02	α = 90
b = 143.741	β = 109.9
c = 84.304	γ = 90

Symmetry
Space Group	P 1 21 1

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	ADSC CCD		2008-05-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03		Diamond	I03

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	2.05	79.31	98.6	0.09	8.6	3.5		78597		2	24.528

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	2.05	2.16	96.3		0.44	2.6	3.4

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 2WNN	2.05	71.88	74586	3966	97.68	0.19176	0.18951	0.23394	RANDOM	22.926

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]
36.75		5.88	-8.33		-28.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.261
r_dihedral_angle_4_deg	17.827
r_dihedral_angle_3_deg	13.218
r_dihedral_angle_1_deg	5.609
r_scangle_it	2.571
r_scbond_it	1.602
r_angle_refined_deg	1.283
r_mcangle_it	1.048
r_angle_other_deg	0.904
r_mcbond_it	0.583
r_mcbond_other	0.122
r_chiral_restr	0.073
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_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	9192
Nucleic Acid Atoms
Solvent Atoms	540
Heterogen Atoms	60

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
REFMAC	phasing