2FDO

Crystal Structure of the Conserved Protein of Unknown Function AF2331 from Archaeoglobus fulgidus DSM 4304 Reveals a New Type of Alpha/Beta Fold

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	45% MPD, 0.2 M ammonium sulfate and 0.1 M Tris, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.205	α = 90
b = 48.873	β = 90
c = 86.693	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 315	MIRROR	2005-03-01	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97902, 0.97919	APS	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.4	19.96	97.97	0.11	0.11	33.904	6.7	7822	7822		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.459	89.55		0.42	0.42	3.9	5.3	463

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.4	19.96	7773	7773	367	97.97	0.20127	0.20127	0.19883	0.25253	RANDOM	54.484

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]
-0.87			0.16		0.72

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.002
r_dihedral_angle_3_deg	18.184
r_dihedral_angle_4_deg	13.36
r_dihedral_angle_1_deg	7.47
r_scangle_it	4.26
r_scbond_it	3.1
r_angle_refined_deg	1.738
r_mcangle_it	1.627
r_mcbond_it	1.407
r_nbtor_refined	0.307
r_nbd_refined	0.209
r_symmetry_vdw_refined	0.187
r_xyhbond_nbd_refined	0.136
r_chiral_restr	0.113
r_symmetry_hbond_refined	0.086
r_bond_refined_d	0.021
r_gen_planes_refined	0.007
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	1429
Nucleic Acid Atoms
Solvent Atoms	27
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data reduction
HKL-2000	data scaling
HKL-3000	phasing
SHELXD	phasing
SHELXE	model building
MLPHARE	phasing
DM	phasing
SOLVE	phasing
RESOLVE	phasing
Coot	model building
CCP4	phasing
O	model building