2R4G

The high resolution structure of the RNA-binding domain of telomerase

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 39.354	α = 90
b = 67.22	β = 90.66
c = 51.533	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	ADSC QUANTUM 210		2007-06-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X6A	0.9795	NSLS	X6A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.71	20	99.87	0.047	27.3	3.7	29502	27457	2	2	21.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.71	1.77	99.3		0.481	2.2	3	2704

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.71	20	27457	1471	99.87	0.20209	0.2002	0.23864	RANDOM	27.424

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]
-0.44		-0.39	-0.96		1.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.35
r_dihedral_angle_4_deg	16.793
r_dihedral_angle_3_deg	13.431
r_dihedral_angle_1_deg	5.308
r_scangle_it	2.548
r_scbond_it	1.625
r_mcangle_it	1.104
r_angle_refined_deg	0.831
r_mcbond_it	0.659
r_nbtor_refined	0.311
r_nbd_refined	0.195
r_symmetry_vdw_refined	0.144
r_symmetry_hbond_refined	0.123
r_xyhbond_nbd_refined	0.119
r_chiral_restr	0.067
r_bond_refined_d	0.008
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2145
Nucleic Acid Atoms
Solvent Atoms	212
Heterogen Atoms	7

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing