3E23

Crystal structure of the RPA2492 protein in complex with SAM from Rhodopseudomonas palustris, Northeast Structural Genomics Consortium Target RpR299

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	277	Protein solution: 10 mM Tris (pH 7.5), 100 mM sodium chloride, 5 mM DTT, and 5 mM S-adenosyl-methionine. Resevoir solution: 100 mM HEPES (pH 7.5) and 2 M ammonium sulfate. , microbatch under oil, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.185	α = 90
b = 65.295	β = 90
c = 67.109	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 4	mirrors	2008-07-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.97902	NSLS	X4A

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	1.6	30	90.2	0.049	0.057	33.94	4.1	60048	54164	2	2	9.9

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)
	1.6	1.66	66.3		0.074	0.109	12.77	2.4	6000

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	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	1.6	19.86	2	2	59601	53939	5207	90.5	0.161	0.16	0.16	0.183	RANDOM	13

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]
0.72			-0.41		-0.31

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.9
c_improper_angle_d	1.35
c_angle_deg	1.3
c_bond_d	0.01
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1546
Nucleic Acid Atoms
Solvent Atoms	317
Heterogen Atoms	52

Software

Software
Software Name	Purpose
CNS	refinement
ADSC	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
SHELX	phasing
XTALVIEW	refinement