7N6L

Crystal structure of the substrate-binding domain of E. coli DnaK in complex with the peptide EANQQKPLLGLFADG

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	2.8 M (NH4)2SO4, 0.1 M K3PO4

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.621	α = 90
b = 95.607	β = 90
c = 117.614	γ = 90

Symmetry
Space Group	I 2 2 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	PIXEL	DECTRIS PILATUS3 R 200K-A	Rigaku VariMax HF	2020-04-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	2.39	50	98.9	0.166	0.186	0.08	8.7	4.9		8602

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.39	2.43	92.3		2.182	2.581	1.339	0.332		3.2

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	1DKZ	2.4	47.85	8145	409	98.19	0.2597	0.2556	0.3323	RANDOM	53.306

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]
0.96			1.63		-2.59

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.751
r_dihedral_angle_3_deg	18.299
r_dihedral_angle_4_deg	16.866
r_dihedral_angle_1_deg	6.976
r_angle_refined_deg	1.407
r_angle_other_deg	1.188
r_chiral_restr	0.049
r_bond_refined_d	0.005
r_gen_planes_refined	0.005
r_gen_planes_other	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.751
r_dihedral_angle_3_deg	18.299
r_dihedral_angle_4_deg	16.866
r_dihedral_angle_1_deg	6.976
r_angle_refined_deg	1.407
r_angle_other_deg	1.188
r_chiral_restr	0.049
r_bond_refined_d	0.005
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	1611
Nucleic Acid Atoms
Solvent Atoms	23
Heterogen Atoms	22

Software

Software
Software Name	Purpose
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

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.