4DN8

Structure of porcine surfactant protein D neck and carbohydrate recognition domain complexed with mannose

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2GGU	A complex of pig SPD and glycerol solved by molecular replacement in the same space group using human SPD (pdb code 2GGU B chain)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	290	12.3 mg/ml protein in 0.9 % sodium chloride, 5 mM EDTA, 15 mM calcium chloride, and 20 mM mannose was mixed with an equal volume of 0.1 M bistris (pH =6.5), 20% w/v PEG 3350, 200 mM magesium chloride, and 15% v/v glycerol. Prior to data collection crystals were soaked in a 30% w/v D-mannose solution., VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.024	α = 90
b = 66.024	β = 90
c = 66.018	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV		2010-10-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.2	15	99.5	0.044	33.9	10.8	8327	8327		-3	46.21

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.28	99.3		0.418	7.25	9.4	839

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	A complex of pig SPD and glycerol solved by molecular replacement in the same space group using human SPD (pdb code 2GGU B chain)	2.2	14.763	8327	8327	827	99.5	0.2028	0.2028	0.1989	0.2373	RANDOM

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]
-2.4547			-2.4547		4.9093

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.737
f_angle_d	0.542
f_chiral_restr	0.038
f_plane_restr	0.003
f_bond_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1194
Nucleic Acid Atoms
Solvent Atoms	36
Heterogen Atoms	14

Software

Software
Software Name	Purpose
CrystalClear	data collection
PHASER	phasing
PHENIX	refinement
DENZO	data reduction
SCALEPACK	data scaling

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.