1TFW

How CCA is added to the 3' end of immature tRNA without the use of an oligonucleotide template

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1R89	PDB entry 1R89

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	295	pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 116.641	α = 90
b = 84.77	β = 104.66
c = 135.813	γ = 90

Symmetry
Space Group	P 1 21 1

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				M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25		NSLS	X25

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	2.1	47.7	98.7	0.072		3.1		122568		-3

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 1R89	2.2	47.7	122568	6447	99.07	0.19454	0.19207	0.24168	RANDOM	45.443

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]
0.39		-0.3	0.21		-0.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.431
r_dihedral_angle_4_deg	16.813
r_dihedral_angle_3_deg	16.543
r_dihedral_angle_1_deg	5.465
r_scangle_it	3.329
r_scbond_it	2.45
r_mcangle_it	1.45
r_mcbond_it	1.272
r_angle_refined_deg	1.165
r_angle_other_deg	0.956
r_mcbond_other	0.292
r_symmetry_vdw_other	0.212
r_nbd_refined	0.187
r_nbd_other	0.184
r_nbtor_refined	0.184
r_xyhbond_nbd_refined	0.147
r_symmetry_vdw_refined	0.12
r_symmetry_hbond_refined	0.097
r_nbtor_other	0.077
r_metal_ion_refined	0.07
r_chiral_restr	0.066
r_xyhbond_nbd_other	0.032
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_metal_ion_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14520
Nucleic Acid Atoms	1598
Solvent Atoms	1059
Heterogen Atoms	64

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing