Experiment: 7LHX

Human U1A protein with F37M and F77M mutations for improved phasing

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1URN

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293.15	2.7-3.1 M Sodium Acetate

Crystal Properties
Matthews coefficient	Solvent content
2.42	51.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.377	α = 90
b = 64.377	β = 90
c = 46.828	γ = 120

Symmetry
Space Group	P 3 2 1

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	APEX II CCD		2011-11-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	BRUKER IMUS MICROFOCUS	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	27.88	100	0.029	0.009	1	61.2	10		10961

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.27	100		0.076	0.038	0.995	20.2	4.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1urn	2.2	27.88	1.34	10961	558	99.27	0.1681	0.1659	0.169	0.2128	0.2179	23.322

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	776
Nucleic Acid Atoms
Solvent Atoms	87
Heterogen Atoms	25

Software

Software
Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
PROTEUM PLUS	data reduction
Aimless	data scaling
PHASER	phasing