3LGA

Crystal structure of P. abyssi tRNA m1A58 methyltransferase in complex with S-adenosyl-L-homocysteine

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3LHD	PDB ENTRY 3LHD

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		291	2.4M ammonium sulfate, 0.2M ammonium acetate, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 138.216	α = 90
b = 138.216	β = 90
c = 121.119	γ = 120

Symmetry
Space Group	P 31

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 315r	bi-morph mirrors	2009-06-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SOLEIL BEAMLINE PROXIMA 1	0.98	SOLEIL	PROXIMA 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	2.05	34.86	99.8	0.091	11.5	4.8		162057			34.54

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)
	2.05	2.16	100		0.706	2.1	4.8	23768

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3LHD	2.05	34.86	153870	8116	99.76	0.19959	0.19862	0.21768	RANDOM	38.427

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]
0.64	0.32		0.64		-0.96

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.819
r_dihedral_angle_4_deg	23.636
r_dihedral_angle_3_deg	17.294
r_dihedral_angle_1_deg	6.933
r_scangle_it	4.94
r_scbond_it	3.115
r_mcangle_it	1.995
r_angle_refined_deg	1.824
r_mcbond_it	1.248
r_nbtor_refined	0.31
r_symmetry_vdw_refined	0.254
r_nbd_refined	0.21
r_chiral_restr	0.165
r_xyhbond_nbd_refined	0.138
r_symmetry_hbond_refined	0.102
r_bond_refined_d	0.019
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	8152
Nucleic Acid Atoms
Solvent Atoms	340
Heterogen Atoms	124

Software

Software
Software Name	Purpose
PHASER	phasing
REFMAC	refinement
XDS	data reduction
SCALA	data scaling