2J0S

The crystal structure of the Exon Junction Complex at 2.2 A resolution

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1FUU	PDB ENTRY 1FUU, 1FUK, 1P27
experimental model	PDB	1FUK	PDB ENTRY 1FUU, 1FUK, 1P27
experimental model	PDB	1P27	PDB ENTRY 1FUU, 1FUK, 1P27

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				8% PEG 6000, 100 MM MGCL2, 100 MM MES PH 6.0

Crystal Properties
Matthews coefficient	Solvent content
3.05	59.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 169.44	α = 90
b = 169.44	β = 90
c = 71.04	γ = 120

Symmetry
Space Group	P 64

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	MARRESEARCH		2006-06-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA		SLS	X06SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.2	50	98.9	0.08	0.08	11.1	3.6		58631		2.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.3	95.6		0.54	0.54	2.5	2.9

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 1FUU, 1FUK, 1P27	2.21	43.73	55698	2932	100	0.187	0.185	0.216	RANDOM	43.99

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]
-0.33	-0.16		-0.33		0.49

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.31
r_dihedral_angle_4_deg	19.794
r_dihedral_angle_3_deg	16.902
r_dihedral_angle_1_deg	6.456
r_scangle_it	2.724
r_scbond_it	1.746
r_angle_refined_deg	1.493
r_mcangle_it	1.148
r_angle_other_deg	0.843
r_mcbond_it	0.806
r_symmetry_vdw_other	0.27
r_xyhbond_nbd_refined	0.225
r_nbd_refined	0.195
r_nbd_other	0.191
r_nbtor_refined	0.178
r_mcbond_other	0.151
r_symmetry_hbond_refined	0.148
r_symmetry_vdw_refined	0.111
r_nbtor_other	0.088
r_chiral_restr	0.085
r_metal_ion_refined	0.039
r_bond_refined_d	0.014
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5359
Nucleic Acid Atoms	121
Solvent Atoms	344
Heterogen Atoms	32

Software

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