4BQI

ARABIDOPSIS THALIANA cytosolic alpha-1,4-glucan phosphorylase (PHS2) in complex with maltotriose

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.25	293	CRYSTALLISED FROM APPROXIMATELY 20% PEG3350, 100 MM AMMONIUM CITRATE PH 8.25, 10% GLYCEROL USING THE HANGING DROP VAPOUR DIFFUSION METHOD AT 20 DEG C. 1 MICROLITRE OF PROTEIN AT 10 MG PER ML IN 12.5 MM HEPES PH 7.5, 25 MM NACL WAS MIXED WITH 1 MICROLITRE OF THE WELL SOLUTION TO GIVE THE FINAL DROP

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.713	α = 90
b = 116.072	β = 107.38
c = 94.342	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 QUANTUM 315		2011-01-15	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	1.9	65.81	98.2	0.06	12.9	4		132861			28.1

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	1.9	2	88.8		0.56	2.2	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 1GPB	1.9	52.48	126128	6643	98.19	0.19799	0.19576	0.24106	RANDOM	33.2

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]
0.95		-1.04	-0.81		-0.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.389
r_dihedral_angle_4_deg	20.275
r_dihedral_angle_3_deg	13.604
r_dihedral_angle_1_deg	6.164
r_angle_refined_deg	1.545
r_angle_other_deg	1.155
r_chiral_restr	0.093
r_bond_refined_d	0.014
r_gen_planes_refined	0.008
r_bond_other_d	0.005
r_gen_planes_other	0.004
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_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
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	12957
Nucleic Acid Atoms
Solvent Atoms	919
Heterogen Atoms	111

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing