Experiment: 1TWZ

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1TWS	PDB entry 1TWS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	291	lithium sulfate, tris, pH 9, VAPOR DIFFUSION, HANGING DROP, temperature 219K

Crystal Properties
Matthews coefficient	Solvent content
3	58.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97.362	α = 90
b = 97.362	β = 90
c = 262.865	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	MAR CCD 165 mm	mirrors	2004-04-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.75	50	100	0.057	57.3	11.5	19781	19781	-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.75	2.85	99.9		0.324	7.5	12	19781

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1TWS	2.75	50	-3	18715	18715	1004	98.3	0.22871	0.22871	0.22601	0.27848	RANDOM	30.082

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]
4.38	2.19		4.38		-6.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.696
r_scangle_it	2.898
r_scbond_it	1.813
r_angle_refined_deg	1.732
r_mcangle_it	1.178
r_mcbond_it	0.603
r_symmetry_vdw_refined	0.426
r_nbd_refined	0.256
r_xyhbond_nbd_refined	0.169
r_symmetry_hbond_refined	0.154

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.696
r_scangle_it	2.898
r_scbond_it	1.813
r_angle_refined_deg	1.732
r_mcangle_it	1.178
r_mcbond_it	0.603
r_symmetry_vdw_refined	0.426
r_nbd_refined	0.256
r_xyhbond_nbd_refined	0.169
r_symmetry_hbond_refined	0.154
r_chiral_restr	0.106
r_bond_refined_d	0.02
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4093
Nucleic Acid Atoms
Solvent Atoms	134
Heterogen Atoms	76

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
SCALEPACK	data scaling
CNS	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.