5IPM

SigmaS-transcription initiation complex with 4-nt nascent RNA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.8	295	PEG3350, sodium chloride, HEPES

Crystal Properties
Matthews coefficient	Solvent content
2.61	52.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 132.752	α = 90
b = 151.967	β = 90
c = 228.064	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	ADSC QUANTUM 315		2014-11-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.979	APS	24-ID-E

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	4.2	126.464	99.9	8.44	7.7		32692

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	4.2

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	MOLECULAR REPLACEMENT	THROUGHOUT	4.2	126.46	32692	1651	99.88	0.27337	0.27042	0.33005	RANDOM	284.432

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]
10.18			10.03		-20.21

RMS Deviations
Key	Refinement Restraint Deviation
r_long_range_B_refined	28.704
r_long_range_B_other	28.704
r_dihedral_angle_2_deg	23.741
r_scangle_other	17.887
r_mcangle_it	16.853
r_mcangle_other	16.853
r_dihedral_angle_4_deg	15.868
r_dihedral_angle_3_deg	15.488
r_scbond_other	10.772
r_scbond_it	10.771
r_mcbond_it	10.195
r_mcbond_other	10.194
r_dihedral_angle_1_deg	5.555
r_angle_refined_deg	1.424
r_angle_other_deg	0.838
r_chiral_restr	0.075
r_gen_planes_refined	0.025
r_gen_planes_other	0.02
r_bond_refined_d	0.011
r_bond_other_d	0.002
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	27572
Nucleic Acid Atoms	1452
Solvent Atoms
Heterogen Atoms	3

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing