3WLM

Crystal structure of barley beta-D-glucan glucohydrolase isoenzyme exo1 in complex with octyl-O-glucoside

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	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
3.55	65.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 101.019	α = 90
b = 101.019	β = 90
c = 180.798	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	2005-11-12	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)	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	42.26	100			70533	70533		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	1.95	99.5		0.99	1.05

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	1IEQ	1.9	42.26	70533	3740	99.96	0.17115	0.16956	0.20133	RANDOM	25.572

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]
-0.05			-0.05		0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.326
r_dihedral_angle_4_deg	14.571
r_dihedral_angle_3_deg	13.652
r_dihedral_angle_1_deg	6.008
r_scangle_it	2.527
r_scbond_it	1.592
r_angle_refined_deg	1.266
r_mcangle_it	0.803
r_mcbond_it	0.496
r_nbtor_refined	0.303

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.326
r_dihedral_angle_4_deg	14.571
r_dihedral_angle_3_deg	13.652
r_dihedral_angle_1_deg	6.008
r_scangle_it	2.527
r_scbond_it	1.592
r_angle_refined_deg	1.266
r_mcangle_it	0.803
r_mcbond_it	0.496
r_nbtor_refined	0.303
r_symmetry_hbond_refined	0.239
r_symmetry_vdw_refined	0.229
r_nbd_refined	0.194
r_xyhbond_nbd_refined	0.165
r_chiral_restr	0.085
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4566
Nucleic Acid Atoms
Solvent Atoms	870
Heterogen Atoms	122

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.