1YB2

Structure of a putative methyltransferase from Thermoplasma acidophilum.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	298	ammonium formate, PEG 3350, sucrose, glycerol, isopropanol, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.4	49.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.316	α = 90
b = 60.557	β = 105.12
c = 65.841	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	CCD	ADSC QUANTUM 315		2004-10-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97944	APS	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	27.7	98.7			18240	18240

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.07	89		2.22	2.2

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	SAD	THROUGHOUT	2.01	27.7	17309	17309	930	98.49	0.20149	0.20149	0.19907	0.24718	RANDOM	34.386

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]
-0.43		0.28	2.37		-1.8

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.163
r_dihedral_angle_4_deg	20.332
r_dihedral_angle_3_deg	16.867
r_dihedral_angle_1_deg	5.742
r_scangle_it	3.881
r_scbond_it	2.803
r_mcangle_it	1.526
r_mcbond_it	1.347
r_angle_refined_deg	1.301
r_nbtor_refined	0.304
r_nbd_refined	0.194
r_symmetry_hbond_refined	0.154
r_symmetry_vdw_refined	0.135
r_xyhbond_nbd_refined	0.132
r_chiral_restr	0.098
r_bond_refined_d	0.012
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1786
Nucleic Acid Atoms
Solvent Atoms	132
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data scaling
SHELXD	phasing
MLPHARE	phasing
DM	phasing
RESOLVE	phasing
ARP/wARP	model building