7ZMQ

Crystal structure of human RECQL5 helicase APO form in complex with engineered nanobody (Gluebody) G2*-006

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	0.2M lithium sulfate -- 25% PEG3350 -- 0.1M tris pH 8.5

Crystal Properties
Matthews coefficient	Solvent content
3.94	68.79

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 115.13	α = 90
b = 199.086	β = 90
c = 174.158	γ = 90

Symmetry
Space Group	C 2 2 21

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 6M		2020-01-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04-1	0.9119	Diamond	I04-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.41	99.68	100	0.9	8.2	6.7		77373

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	2.41	2.45			0.3

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	5LB5	2.7	99.665	55150	2899	99.926	0.227	0.225	0.2583	61.392

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]
0.557			2.265		-2.822

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.552
r_dihedral_angle_4_deg	22.232
r_dihedral_angle_3_deg	18.074
r_lrange_it	13.871
r_lrange_other	13.87
r_scangle_it	8.495
r_scangle_other	8.49
r_mcangle_it	8.166
r_mcangle_other	8.165
r_dihedral_angle_1_deg	7.229
r_scbond_it	5.49
r_scbond_other	5.476
r_mcbond_other	5.294
r_mcbond_it	5.293
r_angle_refined_deg	1.534
r_angle_other_deg	1.288
r_symmetry_nbd_refined	0.267
r_nbd_other	0.242
r_nbd_refined	0.208
r_xyhbond_nbd_refined	0.194
r_symmetry_nbd_other	0.182
r_nbtor_refined	0.163
r_symmetry_xyhbond_nbd_refined	0.098
r_ncsr_local_group_1	0.083
r_symmetry_nbtor_other	0.078
r_chiral_restr	0.07
r_ncsr_local_group_2	0.068
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	8750
Nucleic Acid Atoms
Solvent Atoms	52
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
xia2	data reduction
Aimless	data scaling
PHASER	phasing