Experiment: 6VZD

N-terminal domain of mouse surfactant protein B (K46E/R51E mutant) with bound lipid

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6VYN	6VYN (lipid removed)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.4	293.15	100 mM citrate buffer pH 5.4, 23-25% PEG 4000, 14-15% 2-propanol

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.793	α = 90
b = 66.124	β = 97.37
c = 59.62	γ = 90

Symmetry
Space Group	P 1 21 1

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 EIGER X 16M		2019-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.979	APS	24-ID-E

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	1.88	59.13	92.19	0.1001	1	40.86	53.8		31237			18.78

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	1.88	1.947			1.511	0.897	2.41

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 (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	6VYN (lipid removed)	1.88	59.13	28915	1841	91.84	0.1727	0.1697	0.2175	0.2234	35.02

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	30.7408
f_angle_d	0.7357
f_chiral_restr	0.0437
f_bond_d	0.0061
f_plane_restr	0.0054

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2571
Nucleic Acid Atoms
Solvent Atoms	318
Heterogen Atoms	294

Software

Software
Software Name	Purpose
PHENIX	refinement
Coot	model building
XDS	data scaling
PHENIX	phasing
XDS	data reduction