1P91

Crystal Structure of RlmA(I) enzyme: 23S rRNA n1-G745 methyltransferase (NORTHEAST STRUCTURAL GENOMICS CONSORTIUM TARGET ER19)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	300	Ammonium sulfate, Lithium Sulfate, pH 6.5, VAPOR DIFFUSION, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
3.81	67.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.187	α = 90
b = 122.279	β = 90
c = 143.138	γ = 90

Symmetry
Space Group	I 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	105	CCD	ADSC QUANTUM 4		2002-10-01	M	MAD
2	1		CCD	ADSC QUANTUM 4		2002-11-01

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12C	0.97889, 0.97874, 0.9500	NSLS	X12C
2	SYNCHROTRON	CHESS BEAMLINE F1	0.9160	CHESS	F1

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	2.8	50	93	0.106	11		21876	21876		-0.5	41.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.8	2.85	80.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	2.8	20	1	21804	1138	92.9	0.248	0.248	0.248	0.296	RANDOM	55.8

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]
-19.33			-9.08		28.41

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.7
c_improper_angle_d	1.27
c_bond_d	0.012
c_dihedral_angle_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4176
Nucleic Acid Atoms
Solvent Atoms	85
Heterogen Atoms	81

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
SnB	phasing
SOLVE	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.