8QGX | pdb_00008qgx

Complex between human neutrophil elastase with nanobody NbE201

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3Q76
experimental model	PDB	5IMO

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	The crystals were grown at 20oC using the sitting drop vapor diffusion method. The drop contained 0.2 uL of hNE in complex with NbE201 at a concentration of 15 mg/mL and 0.2 uL of 0.1M HEPES pH7 buffer with 10 per cent (v/v) polyethylene glycol 5000 monomethyl ether and 5 per cent (v/v) tacsimate. The crystals were transferred to a cryoprotectant solution containing 33 per cent (v/v) polyethylene glycol 6000 and 33 per cent (v/v) glycerol before being frozen in liquid nitrogen.

Crystal Properties
Matthews coefficient	Solvent content
2.67	53.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.98	α = 90
b = 73	β = 90
c = 84.92	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	293	PIXEL	DECTRIS EIGER X 16M		2022-02-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SOLEIL BEAMLINE PROXIMA 1	0.9786	SOLEIL	PROXIMA 1

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	2.3	48.54	99.7	0.128	0.999	11.6	13.2		18530

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.42			1.914	0.886

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.3	48.54	18530	927	99.9	0.226	0.224	0.2444	0.271	0.2984	RANDOM	84.99

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]
-3.9353			-6.9655		10.9008

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	15.78
t_omega_torsion	3.62
t_angle_deg	1.13
t_bond_d	0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
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	2566
Nucleic Acid Atoms
Solvent Atoms	18
Heterogen Atoms	81

Software

Software
Software Name	Purpose
BUSTER	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing