1UTD

The structure of the trp RNA-binding attenuation protein (TRAP) bound to a 63-nucleotide RNA molecule containing GAGUUU repeats

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		0.2M K-GLUTAMATE, 50 MM TRIETHANOLAMINE PH8.0, 10MM MGCL2, 8-11% MONOMETHYL ETHER PEG 2000+0.4M KCL AT END, pH 8.00

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 115.11	α = 90
b = 134.23	β = 106.45
c = 119.74	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120				2002-06-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2		ESRF	ID14-2

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	30	96.3	0.079	15.2	3.3		99619

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)
1	2.1	2.18	76.8		0.254	3.1	2.2

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 ENTYRY 1C9S	2.1	20	97170	986	100	0.17	0.169	0.228	RANDOM	20.31

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]
1.07		-0.54	-0.77		-0.61

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	7.561
r_scangle_it	4.465
r_scbond_it	2.923
r_mcangle_it	1.585
r_angle_refined_deg	1.488
r_mcbond_it	0.826
r_symmetry_vdw_refined	0.256
r_nbd_refined	0.209
r_symmetry_hbond_refined	0.167
r_xyhbond_nbd_refined	0.166
r_chiral_restr	0.11
r_bond_refined_d	0.015
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
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_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11996
Nucleic Acid Atoms	815
Solvent Atoms	983
Heterogen Atoms	330

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing