2C4R

Catalytic domain of E. coli RNase E

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		CRYSTALLIZATION CONDITIONS: CRYSTALS OF THE RNASE E CATALYTIC DOMAIN/ RNA COMPLEX APPEARED AFTER TWO TO FOUR WEEKS IN 5 TO 20 % WT/V POLYETHYLENE GLYCOL 8,000, 0.1 M TRIS PH 7.5 TO 8.0, AND 10 TO 50 MM MAGNESIUM FORMATE AT 20OC

Crystal Properties
Matthews coefficient	Solvent content
7.1	82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 196.586	α = 90
b = 196.586	β = 90
c = 140.766	γ = 120

Symmetry
Space Group	P 62 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	ADSC CCD			M	SINGLE WAVELENGTH

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

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	3.6	25	99.8	0.13	23	16		19065

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	3.6	3.73	97.7		0.64	209	10

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	PDB ENTRY 2BX2	3.6	25	17938	973	99.7	0.32	0.319	0.347	RANDOM	59.1

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]
4.22	2.11		4.22		-6.33

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.726
r_dihedral_angle_3_deg	28.266
r_dihedral_angle_4_deg	24.522
r_dihedral_angle_1_deg	14.245
r_mcangle_it	5.494
r_scangle_it	5.401
r_scbond_it	3.373
r_mcbond_it	3.211
r_angle_refined_deg	1.975
r_symmetry_vdw_refined	0.657
r_nbd_refined	0.406
r_nbtor_refined	0.377
r_xyhbond_nbd_refined	0.359
r_symmetry_hbond_refined	0.354
r_chiral_restr	0.118
r_bond_refined_d	0.016
r_gen_planes_refined	0.012
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_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3557
Nucleic Acid Atoms	212
Solvent Atoms	6
Heterogen Atoms	3

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling