1FDZ

N-ACETYLNEURAMINATE LYASE IN COMPLEX WITH PYRUVATE VIA BOROHYDRIDE REDUCTION

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1NAL	ENZYME-3-HYDROXYPYRUVATE COMPLEX

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.9		HANGING DROP VAPOR DIFFUSION. WELL: 53% SATURATED AMMONIUM SULFATE, 75 MILLIMOLAR SODIUM PHOSPHATE BUFFER (PH 6.9). DROP: EQUAL VOLUMES OF WELL AND PRE-REACTED ENZYME, SIALIC ACID AND BOROHYDRIDE MIX (SEE JRNL), vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
3.2	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121	α = 90
b = 121	β = 90
c = 196.12	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	108	IMAGE PLATE	RIGAKU RAXIS IIC	MSC MIRROR SYSTEM	1995-12-21	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	MACSCIENCE M18X

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	15	97	0.094	12.6	3.7		49914

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)
	2.6	2.64	84.3		0.389	2.67	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1FDZ (ENZYME-3-HYDROXYPYRUVATE COMPLEX)	2.6	6	45800		96.8	0.2	0.2		27.3

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
x_dihedral_angle_d	23.2
x_angle_deg	1.7
x_improper_angle_d	1.58
x_bond_d	0.012
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9006
Nucleic Acid Atoms
Solvent Atoms	228
Heterogen Atoms	20

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing