Experiment: 1K23

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.7	291	PEG 8000, pH 6.7, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.88	57.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.29	α = 90
b = 130.56	β = 90
c = 150.47	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 4		2000-02-15	M	MAD
2	1	x-ray	100	CCD	ADSC QUANTUM 4		2000-02-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9763, 0.9793, 0.9393	ESRF	ID14-4
2	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9786, 0.9793, 0.9393	ESRF	ID14-4

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	3	20	98.2	0.04	12.5	3.5	32005	32005			37.4

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)
	3	3.16	98.1		0.083	0.084	3.6	4597

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-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	3	19.96	31603	31603	1570	97.9	0.26	0.293	RANDOM	57.3

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]
-15.91			-25.74		41.65

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.3
c_scangle_it	2.63
c_mcangle_it	1.92
c_scbond_it	1.63
c_angle_deg	1.2
c_mcbond_it	1.08
c_improper_angle_d	0.79
c_bond_d	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8907
Nucleic Acid Atoms
Solvent Atoms	58
Heterogen Atoms	8

Software

Software
Software Name	Purpose
SnB	phasing
SHARP	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

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.