Experiment: 4AL7

Crystal structure of the Csy4-minimal crRNA complex

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4AL5	PDB ENTRY 4AL5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5		21% PEG4000, 180 MM SODIUM CITRATE PH 5.0, 100 MM MAGNESIUM CHLORIDE, 2 MM AMMONIUM METAVANADATE

Crystal Properties
Matthews coefficient	Solvent content
2.37	52.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.74	α = 90
b = 47.28	β = 106.72
c = 87.93	γ = 90

Symmetry
Space Group	C 1 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	ADSC QUANTUM 315r		2011-05-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1		ALS	8.2.1

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	2.32	36.48	99.4	0.08	13.5	4.9		10773		1.99	38.68

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	2.32	2.38	100		0.48	2.49	3.3

Refinement

Statistics
Diffraction ID	Structure Solution 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	PDB ENTRY 4AL5	2.32	36.476	1.99	10773	530	99.29	0.205	0.2023	0.2048	0.2556	0.2641	65.5

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]
-3.1174		15.5705	7.5393		6.1462

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.953
f_angle_d	1.54
f_chiral_restr	0.088
f_bond_d	0.015
f_plane_restr	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1175
Nucleic Acid Atoms	306
Solvent Atoms	45
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing