2AOS

Protein-protein Interactions of protective signalling factor: Crystal structure of ternary complex involving signalling protein from goat (SPG-40), tetrasaccharide and a tripeptide Trp-pro-Trp at 2.9 A resolution

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.8	298	25 mM TRIS-HCL, 50 mM NACL, 19% ETHANOL, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.8	56.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.871	α = 90
b = 66.512	β = 90
c = 107.623	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	2005-08-01	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	2.9	56	96.8	0.11	7.1		10576	10278			50

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	2.9	3.12	98		0.303	2

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 1LJY	2.9	56	10278	9783	495	98.13	0.195	0.19462	0.19248	0.23866	RANDOM	39.236

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]
-2.46			-1.38		3.83

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	24.419
r_scangle_it	4.729
r_mcangle_it	3.29
r_scbond_it	2.89
r_dihedral_angle_1_deg	2.561
r_angle_other_deg	2.148
r_angle_refined_deg	2.09
r_mcbond_it	1.812
r_symmetry_vdw_other	0.335
r_nbd_other	0.275
r_nbd_refined	0.271
r_nbtor_other	0.194
r_symmetry_hbond_refined	0.185
r_xyhbond_nbd_refined	0.169
r_symmetry_vdw_refined	0.148
r_chiral_restr	0.146
r_xyhbond_nbd_other	0.077
r_bond_refined_d	0.015
r_gen_planes_refined	0.008
r_gen_planes_other	0.006
r_bond_other_d	0.003
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	2913
Nucleic Acid Atoms
Solvent Atoms	99
Heterogen Atoms	95

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing