2C0B

Catalytic domain of E. coli RNase E in complex with 13-mer RNA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	293	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 20 C

Crystal Properties
Matthews coefficient	Solvent content
6.6	82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 196.049	α = 90
b = 196.049	β = 90
c = 142.66	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	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1		ESRF	ID23-1

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	3.2	25	100	0.11	30	15.5		27564

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	3.2	3.31	96.7		0.51	5.2	15

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	3.18	12	25508	1349	99.3	0.254	0.252	0.282	RANDOM	43.58

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]
0.04	0.02		0.04		-0.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.61
r_dihedral_angle_4_deg	22.263
r_dihedral_angle_3_deg	20.497
r_scangle_it	15.488
r_scbond_it	11.633
r_dihedral_angle_1_deg	7.637
r_mcangle_it	7.194
r_mcbond_it	4.554
r_angle_refined_deg	1.583
r_nbd_refined	0.36
r_nbtor_refined	0.354
r_xyhbond_nbd_refined	0.309
r_symmetry_hbond_refined	0.28
r_symmetry_vdw_refined	0.208
r_chiral_restr	0.193
r_bond_refined_d	0.012
r_gen_planes_refined	0.009
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	3555
Nucleic Acid Atoms	214
Solvent Atoms	49
Heterogen Atoms	3

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing