2NVH

Determination of Solvent Content in Cavities in Interleukin-1 Using Experimentally-Phased Electron Density

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5I1B	PDB ENTRY 5I1B

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	298	Well solution of 2.2 - 2.8 M ammonium sulfate, 100 mM Tris, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K, pH 7.50

Crystal Properties
Matthews coefficient	Solvent content
3.22	61.75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.506	α = 90
b = 54.506	β = 90
c = 75.359	γ = 90

Symmetry
Space Group	P 43

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 4		1999-07-10	M	SINGLE WAVELENGTH
2	1
3	1
4	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2		SSRL	BL9-2

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	1.5	27.2	99.9	0.04	64	9.1		35259			19.5

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)
	1.5	1.55	100		0.298	8.1

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	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	NONE	PDB ENTRY 5I1B	1.53	27.2	35287	35225		100	0.211	0.211

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
t_dihedral_angle_d	18.684
t_it	14.285
t_angle_deg	2.946
t_nbd	0.039
t_bond_d	0.025
t_gen_planes	0.021
t_trig_c_planes	0.012
t_incorr_chiral_ct
t_pseud_angle

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1224
Nucleic Acid Atoms
Solvent Atoms	149
Heterogen Atoms	10

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing
TNT	refinement
PDB_EXTRACT	data extraction
EPMR	phasing

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 R01GM157729.