2IS3

Crystal Structure of Escherichia coli RNase T

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	298	2.3 M ammonium sulfate, 0.1 M MES, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
4.43	72.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 213.14	α = 90
b = 213.14	β = 90
c = 149.15	γ = 90

Symmetry
Space Group	I 4 2 2

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	BRANDEIS - B4		2003-04-26	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12C	0.9786, 0.9788	NSLS	X12C

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	3.1	30	99.5	0.092	28.9	13		31325

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	3.1	3.21	95.1		0.696	2.1	5.6

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	3.1	29.83	26264	1418	88.3	0.19735	0.1955	0.23143	RANDOM	77.366

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]
-0.48			-0.48		0.96

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.72
r_dihedral_angle_4_deg	19.498
r_dihedral_angle_3_deg	18.483
r_dihedral_angle_1_deg	5.943
r_scangle_it	2.989
r_scbond_it	1.841
r_angle_refined_deg	1.369
r_mcangle_it	1.22
r_mcbond_it	1.015
r_nbtor_refined	0.322

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.72
r_dihedral_angle_4_deg	19.498
r_dihedral_angle_3_deg	18.483
r_dihedral_angle_1_deg	5.943
r_scangle_it	2.989
r_scbond_it	1.841
r_angle_refined_deg	1.369
r_mcangle_it	1.22
r_mcbond_it	1.015
r_nbtor_refined	0.322
r_nbd_refined	0.236
r_symmetry_vdw_refined	0.184
r_xyhbond_nbd_refined	0.134
r_symmetry_hbond_refined	0.103
r_chiral_restr	0.085
r_bond_refined_d	0.013
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6039
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	65

Software

Software
Software Name	Purpose
REFMAC	refinement
CBASS	data collection
DENZO	data reduction
SCALEPACK	data scaling
SnB	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.