2QW5

CRYSTAL STRUCTURE OF A PUTATIVE SUGAR PHOSPHATE ISOMERASE/EPIMERASE (AVA4194) FROM ANABAENA VARIABILIS ATCC 29413 AT 1.78 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.1	277	NANODROP, 0.2M CaCl2, 20.0% PEG 3350, No Buffer pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.41	48.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.238	α = 90
b = 84.238	β = 90
c = 208.172	γ = 90

Symmetry
Space Group	P 41 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	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2007-07-20	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837, 0.97939	SSRL	BL11-1

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	1.78	42.108	97.5	0.108	14.47			71702			25.55

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	1.78	1.84	81		0.684	2.3		5491

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.78	42.108	71600	3610	99.03	0.179	0.179	0.177	0.224	RANDOM	18.233

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]
-0.79			-0.79		1.58

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.548
r_dihedral_angle_4_deg	13.049
r_dihedral_angle_3_deg	11.659
r_scangle_it	7.218
r_scbond_it	5.382
r_dihedral_angle_1_deg	4.242
r_mcangle_it	2.825
r_mcbond_it	2.289
r_angle_refined_deg	1.711
r_angle_other_deg	1.38
r_mcbond_other	0.563
r_symmetry_vdw_other	0.219
r_nbd_refined	0.183
r_nbtor_refined	0.164
r_nbd_other	0.147
r_metal_ion_refined	0.124
r_xyhbond_nbd_refined	0.115
r_chiral_restr	0.107
r_symmetry_hbond_refined	0.102
r_symmetry_vdw_refined	0.095
r_nbtor_other	0.074
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d	0.004
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5256
Nucleic Acid Atoms
Solvent Atoms	690
Heterogen Atoms	29

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data reduction
autoSHARP	phasing