3HTZ

Crystal Structure of the catalytic fragment of alanyl-tRNA synthetase in complex with L-serine: Re-refined

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1YFS	PDB ENTRY 1YFS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.2	298	PEG 5000 mme, NaCl, Tris-Cl, Tris-base, L-serine, pH 6.2, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.22	44.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.091	α = 90
b = 74.091	β = 90
c = 173.595	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	ADSC QUANTUM 315		2004-07-15	M	SINGLE WAVELENGTH

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

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	2.48	50	98.7			17907	17674

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.48

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	FOURIER SYNTHESIS	THROUGHOUT	PDB ENTRY 1YFS	2.5	37.05	16377	882	98.7	0.25327	0.24999	0.31531	RANDOM	40.038

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]
1.28			1.28		-2.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.704
r_dihedral_angle_4_deg	18.1
r_dihedral_angle_3_deg	15.374
r_dihedral_angle_1_deg	4.459
r_mcangle_it	0.99
r_angle_refined_deg	0.763
r_scangle_it	0.678
r_mcbond_it	0.609
r_scbond_it	0.459
r_nbtor_refined	0.325

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.704
r_dihedral_angle_4_deg	18.1
r_dihedral_angle_3_deg	15.374
r_dihedral_angle_1_deg	4.459
r_mcangle_it	0.99
r_angle_refined_deg	0.763
r_scangle_it	0.678
r_mcbond_it	0.609
r_scbond_it	0.459
r_nbtor_refined	0.325
r_xyhbond_nbd_refined	0.227
r_nbd_refined	0.22
r_symmetry_hbond_refined	0.22
r_symmetry_vdw_refined	0.186
r_chiral_restr	0.053
r_bond_refined_d	0.003
r_gen_planes_refined	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3631
Nucleic Acid Atoms
Solvent Atoms	59
Heterogen Atoms

Software

Software
Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.