3QB4

Crystal structure of a TGF-beta ligand-receptor complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	294	0.1M Hepes pH 7.5, 0.2M NaCl 20% (w/v) PEG3350 , VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.23	44.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.81	α = 90
b = 62.85	β = 95.85
c = 124.991	γ = 90

Symmetry
Space Group	I 1 2 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	IMAGE PLATE	RIGAKU RAXIS IV++		2005-09-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.28	24	97.8			22540	22044

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	2.28	2.4	97.4		0.384	2	2.4

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	MOLECULAR REPLACEMENT	THROUGHOUT	1WAQ and chain C of 1REW	2.28	24	21466	20852	1128	97.14	0.19983	0.19983	0.19748	0.24135	RANDOM	75.769

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]
-0.11		-0.1	-0.22		0.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.33
r_dihedral_angle_4_deg	21.257
r_dihedral_angle_3_deg	19.839
r_dihedral_angle_1_deg	8.345
r_scangle_it	6.091
r_scbond_it	4.238
r_mcangle_it	2.631
r_mcbond_it	1.595
r_angle_refined_deg	1.457
r_chiral_restr	0.127
r_bond_refined_d	0.013
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3015
Nucleic Acid Atoms
Solvent Atoms	93
Heterogen Atoms

Software

Software
Software Name	Purpose
CrystalClear	data collection
PHASER	phasing
REFMAC	refinement
CrystalClear	data reduction
CrystalClear	data scaling