2IBG

Crystal Structure of Hedgehog Bound to the FNIII Domains of Ihog

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2IBB	PDB Entry 2IBB PDB Entry 1VHH
experimental model	PDB	1VHH	PDB Entry 2IBB PDB Entry 1VHH

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.4	293	2.0M Na/K phosphate pH 6.4, 0.2M lithium sulfate, 0.05M CAPS pH 10.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.354	α = 90
b = 70.003	β = 90.18
c = 155.695	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		CCD	ADSC QUANTUM 4		2005-10-02	M	SINGLE WAVELENGTH
2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.9763	NSLS	X4A

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	50	100	0.123	11.6	3.8		82885

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		100		0.817	1.8	3.8

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	PDB Entry 2IBB PDB Entry 1VHH	2.2	37.68	76254	3864	92.22	0.2	0.198	0.246	RANDOM	39.719

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]
2.82		0.31	-1.49		-1.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.833
r_dihedral_angle_4_deg	17.104
r_dihedral_angle_3_deg	16.785
r_dihedral_angle_1_deg	6.844
r_scangle_it	2.56
r_scbond_it	1.669
r_angle_refined_deg	1.456
r_mcangle_it	1.104
r_mcbond_it	0.679
r_nbtor_refined	0.309
r_nbd_refined	0.205
r_symmetry_vdw_refined	0.205
r_xyhbond_nbd_refined	0.147
r_symmetry_hbond_refined	0.145
r_chiral_restr	0.09
r_bond_refined_d	0.015
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11295
Nucleic Acid Atoms
Solvent Atoms	289
Heterogen Atoms	60

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing