7N2Y

Crystal Structure of a de Novo Three-stranded Coiled Coil Peptide Containing a dual Tris-thiolate Binding Site for Heavy Metal Complexes

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	293	0.1 M MES pH 6.5 and 25% (w/v) PEG-1000

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 38.328	α = 90
b = 38.328	β = 90
c = 141.824	γ = 120

Symmetry
Space Group	H 3 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	CCD	MARMOSAIC 225 mm CCD		2018-08-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

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	2.08	20	99.9	0.085	0.088	0.024	8.8	14.7		2603			47.19

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	2.08	2.12	100		0.713	0.736	0.181	0.946		15.4

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	6EGL	2.08	17.76	2602	125	99.8	0.216	0.214	0.242	RANDOM	58.46

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]
7.1347			7.1347		-14.2693

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	25.06
t_omega_torsion	2.07
t_angle_deg	1.1
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	25.06
t_omega_torsion	2.07
t_angle_deg	1.1
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	283
Nucleic Acid Atoms
Solvent Atoms	24
Heterogen Atoms	1

Software

Software
Software Name	Purpose
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing
BUSTER	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.