5CXT

Crystal structure of a RNA-binding protein 39 (RBM39) in complex with fragment of splicing factor (U2AF) from Unknown at 2.20 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	277	0.1M potassium chloride, 15.0% polyethylene glycol monomethyl ether 5000, 0.1M HEPES pH 7.0

Crystal Properties
Matthews coefficient	Solvent content
2.55	51.79

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.283	α = 90
b = 127.283	β = 90
c = 78.864	γ = 120

Symmetry
Space Group	P 32

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	MARMOSAIC 325 mm CCD	Vertical focusing mirror; double crystal Si(111) monochromator	2013-11-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL14-1	1.0	SSRL	BL14-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	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	39.432	99.7	0.116	0.135	9.71	3.809		72455		-3	34.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.26	98		0.83	0.981	2

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	3S6E	2.2	39.432	72263	3629	99.68	0.1751	0.1744	0.1897	RANDOM	39.3644

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]
8.73			8.73		-17.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.92
r_dihedral_angle_4_deg	18.357
r_dihedral_angle_3_deg	12.274
r_dihedral_angle_1_deg	5.2
r_mcangle_it	3.713
r_mcbond_it	2.282
r_mcbond_other	2.28
r_angle_refined_deg	1.635
r_angle_other_deg	1.493
r_chiral_restr	0.101

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.92
r_dihedral_angle_4_deg	18.357
r_dihedral_angle_3_deg	12.274
r_dihedral_angle_1_deg	5.2
r_mcangle_it	3.713
r_mcbond_it	2.282
r_mcbond_other	2.28
r_angle_refined_deg	1.635
r_angle_other_deg	1.493
r_chiral_restr	0.101
r_bond_refined_d	0.019
r_gen_planes_refined	0.011
r_bond_other_d	0.01
r_gen_planes_other	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8553
Nucleic Acid Atoms
Solvent Atoms	518
Heterogen Atoms

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.