1ZL1

Crystal structure of the complex of signalling protein from sheep (SPS-40) with a designed peptide Trp-His-Trp reveals significance of Asn79 and Trp191 in the complex formation

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1R2V	pdb entry 1r2v

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.8	298	25mM tris HCl,50mM NaCl, 11% ethanol, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.8	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.79	α = 90
b = 66.309	β = 90
c = 107.382	γ = 90

Symmetry
Space Group	P 21 21 21

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	MIRROR	2004-11-04	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 Sym 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	3.5	56	89.1	0.2	4.5			5105			35

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.5	3.56	85.1		0.59	2.1

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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 1r2v	3.5	56	5105	4869	236	84.8	0.18	0.17764	0.17601	0.21035	RANDOM	25.56

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]
-1.85					1.86

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	19.238
r_scangle_it	4.662
r_scbond_it	2.649
r_mcangle_it	2.019
r_angle_refined_deg	2.005
r_dihedral_angle_1_deg	1.917
r_angle_other_deg	1.374
r_mcbond_it	1.049
r_nbtor_other	0.54
r_symmetry_vdw_refined	0.298
r_nbd_refined	0.288
r_symmetry_vdw_other	0.284
r_symmetry_hbond_refined	0.256
r_nbd_other	0.255
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.137
r_xyhbond_nbd_other	0.12
r_bond_refined_d	0.019
r_gen_planes_refined	0.007
r_gen_planes_other	0.005
r_bond_other_d	0.004
r_dihedral_angle_2_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_metal_ion_refined
r_metal_ion_other
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	2907
Nucleic Acid Atoms
Solvent Atoms	54
Heterogen Atoms	39

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing