1B08

LUNG SURFACTANT PROTEIN D (SP-D) (FRAGMENT)

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HUP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		AN EQUAL AMOUNT OF PROTEIN SOLUTION (8 MG/ML PROTEIN IN 10 MM TRIS 140 MM NACL 1MM CACL2 0.02% (W/V) NAN3 PH 7.5) AND PRECIPITANT BUFFER (10-20% (W/V) PEG 20000 IN 100 MM TRIS PH 6-8) WERE MIXED AND VAPOR EQUILIBRATED AGAINST THE LATTER., pH 7.00

Crystal Properties
Matthews coefficient	Solvent content
3.4	63.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.96	α = 90
b = 109.72	β = 92.2
c = 56.09	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	298	IMAGE PLATE	MARRESEARCH		1998-02-15	M	SINGLE WAVELENGTH

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

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	2.3	20	95	0.063	10.1	2.45		28571			40.3

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	2.3	2.38	90.6		0.29

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	1HUP	2.3	20	28550		95	0.209	0.209	0.271	RANDOM	28.6

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
x_dihedral_angle_d	24.2
x_angle_deg	2.5
x_improper_angle_d	1.9
x_bond_d	0.01
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3450
Nucleic Acid Atoms
Solvent Atoms	192
Heterogen Atoms	9

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CCP4	model building
X-PLOR	refinement
AMoRE	phasing