1XPP

Crystal Structure of TA1416,DNA-directed RNA polymerase subunit L, from Thermoplasma acidophilum

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	295	potassium thiocyanate, PEG MME 2000, sodium cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.51	51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.7	α = 90
b = 69.424	β = 116.77
c = 66.293	γ = 90

Symmetry
Space Group	P 1 2 1

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	SBC-2	mirrors	2003-12-19	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	SBC-3	mirrors	2004-02-26	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.9793	APS	19-ID
2	SYNCHROTRON	APS BEAMLINE 19-BM	0.9793, 0.9794, 0.956	APS	19-BM

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
1,2	1.6	23.9	95.2	0.069	8.6	4.1	64041	60955

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)
1,2	1.6	1.66	91.7		0.347	2.9	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.6	23.9	51951	51951	5905	94.92	0.22355	0.22355	0.21904	0.26351	RANDOM	26.621

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]
-1.24			1.22		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.347
r_dihedral_angle_4_deg	19.442
r_dihedral_angle_3_deg	16.723
r_dihedral_angle_1_deg	5.301
r_scangle_it	4.238
r_scbond_it	2.62
r_mcangle_it	1.789
r_angle_refined_deg	1.417
r_mcbond_it	0.985
r_symmetry_vdw_refined	0.323
r_symmetry_hbond_refined	0.32
r_nbd_refined	0.235
r_xyhbond_nbd_refined	0.189
r_chiral_restr	0.098
r_bond_refined_d	0.013
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_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	3295
Nucleic Acid Atoms
Solvent Atoms	381
Heterogen Atoms	16

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing