4UYK

Crystal structure of a Signal Recognition Particle Alu domain in the elongation arrest conformation

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5		17.5% PEG 400, 5% GLYCEROL BUFFERED IN 100 MM SODIUM ACETATE PH 5.0

Crystal Properties
Matthews coefficient	Solvent content
4.12	73.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 100.86	α = 90
b = 100.86	β = 90
c = 197.47	γ = 90

Symmetry
Space Group	P 43 21 2

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 CCD		2004-04-16	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

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	3.2	30	97.8	0.08	9.09	2.18		30821

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	3.2	3.4	95.9		0.64	1.74	2.18

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	MAD	THROUGHOUT	NONE	3.22	89.82	16238	854	99.3	0.19365	0.1916	0.23315	RANDOM	123.705

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]
3.44			3.44		-6.89

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.828
r_dihedral_angle_4_deg	21.631
r_dihedral_angle_3_deg	19.484
r_long_range_B_refined	7.091
r_long_range_B_other	7.091
r_dihedral_angle_1_deg	6.991
r_mcangle_it	4.816
r_mcangle_other	4.813
r_scangle_other	4.189
r_mcbond_it	2.79
r_mcbond_other	2.788
r_scbond_it	2.52
r_scbond_other	2.519
r_angle_refined_deg	1.116
r_angle_other_deg	1.071
r_chiral_restr	0.072
r_bond_refined_d	0.005
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001
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_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1377
Nucleic Acid Atoms	2882
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
SHARP	phasing