6TBG

Structure of a beta galactosidase with inhibitor

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4D1I

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		291	sodium acetate

Crystal Properties
Matthews coefficient	Solvent content
2.68	54.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 99.285	α = 90.12
b = 115.735	β = 90
c = 115.981	γ = 90.03

Symmetry
Space Group	P 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	PIXEL	DECTRIS PILATUS 6M-F		2017-04-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04	0.9795	Diamond	I04

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	1.5	115.98	96.5	0.049	0.998	11	3.5		798304

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.5	1.53	94.4		0.644		3.5

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	4D1I	1.5	115.98	758165	40094	96.48	0.1401	0.1379	0.1817	RANDOM	24.836

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]
0.03	-0.14	0.17	-0.23	-0.28	0.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.61
r_dihedral_angle_4_deg	20.12
r_dihedral_angle_3_deg	12.306
r_dihedral_angle_1_deg	7.189
r_rigid_bond_restr	1.832
r_angle_refined_deg	1.444
r_angle_other_deg	1.41
r_chiral_restr	0.072
r_gen_planes_refined	0.008
r_bond_refined_d	0.007

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.61
r_dihedral_angle_4_deg	20.12
r_dihedral_angle_3_deg	12.306
r_dihedral_angle_1_deg	7.189
r_rigid_bond_restr	1.832
r_angle_refined_deg	1.444
r_angle_other_deg	1.41
r_chiral_restr	0.072
r_gen_planes_refined	0.008
r_bond_refined_d	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	33789
Nucleic Acid Atoms
Solvent Atoms	4495
Heterogen Atoms	316

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
DIALS	data reduction
Aimless	data scaling
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 R01GM157729.