4J3T

Crystal structure of barley Limit dextrinase co-crystallized with 25mM maltotetraose

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
2.32	46.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 175.09	α = 90
b = 86.23	β = 95.58
c = 61.51	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		2012-06-23	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	1.6	30	99.4	0.063	14.45			119393		-3	22.138

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	1.6	1.7	97.4		0.397	0.467	3.43

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	1.6	29.7	119378	5969	99.51	0.1347	0.1325	0.1769	RANDOM	17.8056

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		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.405
r_sphericity_free	29.817
r_dihedral_angle_4_deg	15.457
r_dihedral_angle_3_deg	11.84
r_sphericity_bonded	7.593
r_dihedral_angle_1_deg	5.891
r_rigid_bond_restr	5.214
r_angle_refined_deg	1.282
r_angle_other_deg	1.051
r_chiral_restr	0.078

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.405
r_sphericity_free	29.817
r_dihedral_angle_4_deg	15.457
r_dihedral_angle_3_deg	11.84
r_sphericity_bonded	7.593
r_dihedral_angle_1_deg	5.891
r_rigid_bond_restr	5.214
r_angle_refined_deg	1.282
r_angle_other_deg	1.051
r_chiral_restr	0.078
r_bond_refined_d	0.007
r_gen_planes_refined	0.005
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6715
Nucleic Acid Atoms
Solvent Atoms	1026
Heterogen Atoms	67

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 National Science Foundation (DBI-1832184), 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.