3D3B

Structural and functional analysis of the E. coli NusB-S10 transcription antitermination complex.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1TZV	PDB ID 1TZV and PDB ID 1J5E (chain J)
experimental model	PDB	1J5E	PDB ID 1TZV and PDB ID 1J5E (chain J)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.8	293	0.1 M CHES, pH 8.8, 18 % PEG 8000, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.74	α = 90
b = 48.99	β = 90
c = 112.77	γ = 90

Symmetry
Space Group	P 21 21 21

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	MARMOSAIC 225 mm CCD	mirrors	2006-11-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.9051	SLS	X10SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.3	30	100	0.074	0.074	17.5	15.3	56411	56411

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.3	1.4	100		0.648	0.648	5.3	14.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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 ID 1TZV and PDB ID 1J5E (chain J)	1.3	20	56394	53574	2820	100	0.17504	0.17348	0.20448	RANDOM	24.51

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]
0.34			0.19		-0.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.796
r_dihedral_angle_4_deg	17.802
r_dihedral_angle_3_deg	14.893
r_dihedral_angle_1_deg	5.737
r_scangle_it	3.575
r_scbond_it	2.472
r_angle_refined_deg	1.512
r_mcangle_it	1.312
r_mcbond_it	0.854
r_nbtor_refined	0.309
r_nbd_refined	0.229
r_xyhbond_nbd_refined	0.168
r_symmetry_vdw_refined	0.166
r_symmetry_hbond_refined	0.161
r_chiral_restr	0.096
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
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	1779
Nucleic Acid Atoms
Solvent Atoms	316
Heterogen Atoms	39

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
XDS	data reduction
XDS	data scaling
MOLREP	phasing