Experiment: 3HEF

Crystal structure of the bacteriophage Sf6 terminase small subunit

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	1.2M NaH2PO4/0.8M K2HPO4, 0.2M Li2SO4, 5% glycerol, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.858	α = 90
b = 88.858	β = 90
c = 72.631	γ = 90

Symmetry
Space Group	P 4 21 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	MARMOSAIC 325 mm CCD	flat mirrors	2009-02-26	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	MARMOSAIC 325 mm CCD		2009-02-26	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	1.02462	SSRL	BL11-1
2	SYNCHROTRON	SSRL BEAMLINE BL7-1	0.9791	SSRL	BL7-1

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	1.65	50	99.7	0.053	107.121	28.4	35754	35647	2	2

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)
	1.65	1.71	100		0.521		28.6	3521

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	1.65	20	1037	35552	33097	1665	93.1	0.224	0.2263	0.251	0.254	RANDOM	35.237

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]
-3.895			-3.895		7.79

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	3.309
c_scbond_it	2.219
c_mcangle_it	1.907
c_mcbond_it	1.232

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1979
Nucleic Acid Atoms
Solvent Atoms	254
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
RESOLVE	phasing
CNS	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
SOLVE	phasing