Experiment: 3HL2

The crystal structure of the human SepSecS-tRNASec complex

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3BC8

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5	285	0.3M tri-lithium citrate, 18% (w/v) PEG 3,350, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 285K

Crystal Properties
Matthews coefficient	Solvent content
3.77	67.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 166.818	α = 90
b = 166.818	β = 90
c = 236.322	γ = 120

Symmetry
Space Group	P 31 1 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	77	CCD	ADSC QUANTUM 315		2008-08-10	M	SINGLE WAVELENGTH

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

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	2.8	50	97.5	0.17	6	5.4		89375			65.3

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)
	2.8	2.9	94.9		0.94	1	4.3

Refinement

Statistics
Diffraction ID	Structure Solution 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 (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	3BC8	2.81	37.95	1.34	89375	89031	1991	97.1	0.203	0.203	0.193	0.238

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13707
Nucleic Acid Atoms	3492
Solvent Atoms	288
Heterogen Atoms	141

Software

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