3N90

The 1.7 Angstrom resolution crystal structure of AT2G44920, a pentapeptide repeat protein from Arabidopsis thaliana thylakoid lumen.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.2	293	well buffer: 2.5M ammonium sulfate, 0.5M sodium acetate; Sample buffer: 0.25M sodium chloride, 10% glycerol, 0.02M Tris, pH 7.8 protein concentration=15mg/mL, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.1	40

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.064	α = 90
b = 75.444	β = 90
c = 59.901	γ = 90

Symmetry
Space Group	C 2 2 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 315	Cryogenically-cooled single crystal Si(111) side bounce monochromator. Optional Si(311) to achive 13.474 keV. Vertical and horizantal focussing mirrors in Kirkpatrick-Baez geometry.	2009-12-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.979	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	1.7	50	99.2	0.081	40.84	1.87	14963	14963	2		19.93

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	1.7	1.79	100		0.066	18.9	1.92	2143

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.7	50	14963	14963	748	99.2	0.2279	0.22631	0.25851	RANDOM	20.296

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]
0.41			-0.44		0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.265
r_dihedral_angle_4_deg	22.876
r_dihedral_angle_3_deg	12.926
r_dihedral_angle_1_deg	6.189
r_scangle_it	4.068
r_scbond_it	2.63
r_angle_refined_deg	1.593
r_mcangle_it	1.548
r_mcbond_it	0.916
r_nbtor_refined	0.312
r_symmetry_vdw_refined	0.236
r_nbd_refined	0.229
r_symmetry_hbond_refined	0.205
r_xyhbond_nbd_refined	0.145
r_chiral_restr	0.094
r_bond_refined_d	0.015
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_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	1072
Nucleic Acid Atoms
Solvent Atoms	103
Heterogen Atoms	5

Software

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