2R3S

CRYSTAL STRUCTURE OF A PUTATIVE O-METHYLTRANSFERASE (NPUN_R0239) FROM NOSTOC PUNCTIFORME PCC 73102 AT 2.15 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	NANODROP, 0.2M Sodium chloride, 1.0M Sodium citrate, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.69	54.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.9	α = 90
b = 93.9	β = 90
c = 180.52	γ = 90

Symmetry
Space Group	P 41 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 mirror (vertical focusing)	2007-07-25	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837, 0.97901, 0.97925	SSRL	BL11-1

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	2.15	29.696	99.6	0.075	14.35	7.25		44737			34.18

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	2.15	2.23	98.5		0.596	2.25

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	2.15	29.696	44659	2245	99.81	0.19	0.19	0.188	0.228	RANDOM	29.828

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]
0.7			0.7		-1.4

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.654
r_dihedral_angle_4_deg	17.323
r_dihedral_angle_3_deg	14.86
r_scangle_it	6.237
r_dihedral_angle_1_deg	6.218
r_scbond_it	4.693
r_mcangle_it	2.826
r_mcbond_it	1.8
r_angle_refined_deg	1.348
r_angle_other_deg	0.972
r_mcbond_other	0.537
r_symmetry_vdw_refined	0.257
r_symmetry_vdw_other	0.236
r_nbd_refined	0.207
r_symmetry_hbond_refined	0.205
r_nbd_other	0.189
r_nbtor_refined	0.179
r_xyhbond_nbd_refined	0.176
r_nbtor_other	0.087
r_chiral_restr	0.079
r_bond_refined_d	0.014
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4976
Nucleic Acid Atoms
Solvent Atoms	308
Heterogen Atoms	42

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SOLVE	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data reduction