7N6M

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

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	2.6 M (NH4)2SO4, 0.1 M K3PO4

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.71	α = 90
b = 95.51	β = 90
c = 117.22	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 PILATUS 6M		2021-03-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL12-2	0.97946	SSRL	BL12-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	1.82	74.04	96.3	0.154	0.163	0.05	0.998	8.4	10		18615

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	1.82	1.86	98.2		7.212	7.611	2.376	0.218		10.1

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	1.82	74.04	17631	978	95.74	0.2507	0.2486	0.2866	RANDOM	36.988

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]
2.58			0.59		-3.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.509
r_dihedral_angle_3_deg	15.664
r_dihedral_angle_4_deg	10.807
r_dihedral_angle_1_deg	6.47
r_angle_refined_deg	1.445
r_angle_other_deg	1.256
r_chiral_restr	0.054
r_bond_refined_d	0.007
r_gen_planes_refined	0.006
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.509
r_dihedral_angle_3_deg	15.664
r_dihedral_angle_4_deg	10.807
r_dihedral_angle_1_deg	6.47
r_angle_refined_deg	1.445
r_angle_other_deg	1.256
r_chiral_restr	0.054
r_bond_refined_d	0.007
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1625
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms	5

Software

Software
Software Name	Purpose
MOSFLM	data reduction
Aimless	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.