4BWL

Structure of the Y137A mutant of E. coli N-acetylneuraminic acid lyase in complex with pyruvate, N-acetyl-D-mannosamine and N- acetylneuraminic acid

X-RAY DIFFRACTION

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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, 200MM NACL, 18% PEG3350

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.97	α = 90
b = 143.22	β = 109.51
c = 83.41	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		2009-07-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02		Diamond	I02

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	49.5	98.7	0.09	9.6	3.6		82202		2	21.4

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	2.11	95.7		0.41	2.8	3.5

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	49.46	78080	4084	98.07	0.18247	0.17964	0.2349	RANDOM	27.7

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]
50.39		-7.26	-24.13		-26.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.238
r_dihedral_angle_4_deg	18.903
r_dihedral_angle_3_deg	15.342
r_dihedral_angle_1_deg	6.439
r_scangle_it	2.059
r_scbond_it	1.383
r_angle_refined_deg	1.342
r_angle_other_deg	0.901
r_mcangle_it	0.863
r_mcbond_it	0.506
r_mcbond_other	0.117
r_chiral_restr	0.075
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
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	9166
Nucleic Acid Atoms
Solvent Atoms	102
Heterogen Atoms	92

Software

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