3WLH

Crystal Structure Analysis of Plant Exohydrolase

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IEQ	PDB ENTRY 1IEQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	277	75mM HEPES-NaOH pH7.0 buffer, 1.2% PEG 400, 1.7M ammonium sulphate, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.57	65.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 101.015	α = 90
b = 101.015	β = 90
c = 182.06	γ = 90

Symmetry
Space Group	P 43 21 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	CCD	ADSC QUANTUM 315	collimating mirror, double-crystal Si(111) monochromator	2007-11-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-5A	1.0	Photon Factory	BL-5A

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	1.65	31.94	98.5	0.089	1	13	106290	106290		1

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 1IEQ	1.65	31.94	106290	5636	98.48	0.16244	0.1608	0.19294	RANDOM	26.486

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]
-0.32			-0.32		0.65

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.961
r_dihedral_angle_4_deg	14.786
r_dihedral_angle_3_deg	12.496
r_sphericity_bonded	9.059
r_sphericity_free	8.469
r_dihedral_angle_1_deg	5.952
r_scangle_it	4.15
r_scbond_it	2.988
r_mcangle_it	2.066
r_rigid_bond_restr	1.776
r_angle_refined_deg	1.583
r_mcbond_it	1.46
r_nbtor_refined	0.311
r_symmetry_hbond_refined	0.227
r_symmetry_vdw_refined	0.213
r_nbd_refined	0.211
r_xyhbond_nbd_refined	0.175
r_chiral_restr	0.121
r_bond_refined_d	0.018
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4566
Nucleic Acid Atoms
Solvent Atoms	838
Heterogen Atoms	218

Software

Software
Software Name	Purpose
ADSC	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling