4J3X

Crystal structure of barley limit dextrinase (E510A mutant) in complex with a branched maltoheptasaccharide

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		298	20% PEG 3350, 0.3M NaI, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 173.27	α = 90
b = 86.2	β = 96.03
c = 61.56	γ = 90

Symmetry
Space Group	C 1 2 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	MAR CCD 165 mm		2012-08-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-2	1.04	MAX II	I911-2

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	1.75	30	97.4	0.076	11.95			89001		-3	22.687

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.85	95.7		0.537	0.65	2.41

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	2Y4S	1.75	28.34	88989	4449	97.44	0.1488	0.1464	0.1954	RANDOM	18.3443

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]
		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.547
r_sphericity_free	28.31
r_dihedral_angle_4_deg	16.917
r_dihedral_angle_3_deg	12.734
r_sphericity_bonded	5.998
r_dihedral_angle_1_deg	5.745
r_rigid_bond_restr	2.36
r_angle_refined_deg	1.145
r_angle_other_deg	0.817
r_chiral_restr	0.067

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.547
r_sphericity_free	28.31
r_dihedral_angle_4_deg	16.917
r_dihedral_angle_3_deg	12.734
r_sphericity_bonded	5.998
r_dihedral_angle_1_deg	5.745
r_rigid_bond_restr	2.36
r_angle_refined_deg	1.145
r_angle_other_deg	0.817
r_chiral_restr	0.067
r_bond_refined_d	0.006
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6774
Nucleic Acid Atoms
Solvent Atoms	983
Heterogen Atoms	89

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
REFMAC	phasing

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 R01GM133198.