1A0C

XYLOSE ISOMERASE FROM THERMOANAEROBACTERIUM THERMOSULFURIGENES

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6XIA	PDB ENTRY 6XIA

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6		PROTEIN IN 50 MM MOPS, 10 MM MGSO4, 1 MM COCL2, PH 7.0, WAS CRYSTALLIZED FROM 12% JEFFAMINE ED 4000, 50 MM MES, PH 6.0 (FOR DETAILS SEE REFERENCE 1).

Crystal Properties
Matthews coefficient	Solvent content
2.6	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.66	α = 90
b = 153.73	β = 90
c = 158.47	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	278	IMAGE PLATE	MARRESEARCH	MIRRORS	1993-02-01	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.5		SRS	PX9.5

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	2.5	10	83.6	0.084	7.6	2.1		61292			30.6

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)
	2.5	2.63	73.6		0.185	3.8	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	MOLECULAR REPLACEMENT	A POSTERIORI	PDB ENTRY 6XIA	2.5	10	60986	3081	84.9	0.168	0.168	0.177	RANDOM	20.3

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	21.9
x_angle_deg	1.6
x_improper_angle_d	1.24
x_bond_d	0.009
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	3504
Nucleic Acid Atoms
Solvent Atoms	279
Heterogen Atoms	2

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
IPMOSFLM	data reduction
CCP4	data scaling
X-PLOR	phasing