2VLB

Structure of unliganded arylmalonate decarboxylase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	292	HANGING-DROP VAPOUR-DIFFUSION SETUP WITH 0.5 ML RESERVOIR SOLUTION AT 292 K. DROPS COMPOSED OF 1 MICROLITER OF PROTEIN AND RESERVOIR SOLUTIONS EACH. PROTEIN SOLUTION CONTAINS 7-8 MG/ML AMDASE, 20 MM TRIS-HCL PH 8 AND 0.5 MM BETA-MERCAPTO ETHANOL. RESERVOIR SOLUTION CONTAINS 1.4-1.8 M NA/K PHOSPHATE PH 5.8-6.4.

Crystal Properties
Matthews coefficient	Solvent content
2.8	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.214	α = 90
b = 100.988	β = 90
c = 139.548	γ = 90

Symmetry
Space Group	P 21 21 21

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	TOROIDAL MIRROR	2006-09-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-3		ESRF	ID14-3

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	1.92	30	98.9	0.06	15.3	4.6		89247

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	1.92	2.02	93.7		0.43	2.2	2.2

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	SIRAS	THROUGHOUT	NONE	1.92	29.64	87922	1324	98.8	0.178	0.178	0.207	RANDOM	44.86

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]
3.59			-2.23		-1.37

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.561
r_dihedral_angle_4_deg	19.036
r_dihedral_angle_3_deg	14.31
r_scangle_it	5.85
r_dihedral_angle_1_deg	5.592
r_scbond_it	3.955
r_mcangle_it	2.229
r_mcbond_it	1.587
r_angle_refined_deg	1.403
r_nbtor_refined	0.297
r_nbd_refined	0.207
r_symmetry_vdw_refined	0.188
r_symmetry_hbond_refined	0.139
r_xyhbond_nbd_refined	0.13
r_chiral_restr	0.085
r_bond_refined_d	0.018
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_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	6633
Nucleic Acid Atoms
Solvent Atoms	446
Heterogen Atoms	83

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
Auto-Rickshaw	phasing
MLPHARE	phasing
DM	phasing