4OVW

ENDOGLUCANASE I COMPLEXED WITH EPOXYBUTYL CELLOBIOSE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		NATIVE STRUCTURE (2 MOLECULES IN ASYMMETRIC UNIT)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5		22 % MEPEG 2K, 0.2 M MAGNESIUM CHLORIDE, PH 7.5 FOR 0.1 M TRIS. METHOD: HANGING DROP VAPOR DIFFUSION. THE PROTEIN SAMPLE HAD PREVIOUSLY BEEN INHIBITED WITH 8.25 MMOL 3,4-EPOXYBUTYL B-D-CELLOBIOSIDE FOR 3HRS., vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.29	46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.94	α = 90
b = 82.62	β = 94.16
c = 73.16	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	120	IMAGE PLATE	RIGAKU		1994-07-21	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-C

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	2.3	18	88	0.071

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	2.3	2.4	47		0.201		1.97

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R	NATIVE STRUCTURE (2 MOLECULES IN ASYMMETRIC UNIT)	2.3		1587		0.18	0.27	RANDOM

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
p_staggered_tor	20.3
p_transverse_tor	20.2
p_planar_tor	4.7
p_scangle_it	3.656
p_mcangle_it	2.689
p_scbond_it	2.603
p_mcbond_it	1.887
p_multtor_nbd	0.258
p_xyhbond_nbd	0.21
p_singtor_nbd	0.179
p_chiral_restr	0.146
p_planar_d	0.043
p_angle_d	0.042
p_bond_d	0.013
p_angle_deg
p_hb_or_metal_coord
p_plane_restr
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6060
Nucleic Acid Atoms
Solvent Atoms	699
Heterogen Atoms	74

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement