3SZX | pdb_00003szx

Crystal Structure of the Triplet Repeat in Myotonic Dystrophy Reveals Heterogeneous 1x1 Nucleotide UU Internal Loop Conformations

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	291	10 mM magnesium sulfate, 50 mM sodium cacodylate, 1.8 M lithium sulfate , pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 39.505	α = 90
b = 39.505	β = 90
c = 155.887	γ = 120

Symmetry
Space Group	H 3

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	MARMOSAIC 325 mm CCD	Rh coated flat mirror, toroidal focusing mirror	2011-01-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.97855	SSRL	BL9-2

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	2.2	33.41	99.8			4571	4571

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.28	99.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	2.204	33.41	0.13	4175	4175	428	91.12	0.2274	0.2223	0.23	0.2708	0.28	random

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]
-5.1983			-5.1983		10.3966

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.533
f_angle_d	2.15
f_chiral_restr	0.087
f_bond_d	0.024
f_plane_restr	0.013

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	802
Solvent Atoms	48
Heterogen Atoms

Software

Software
Software Name	Purpose
Blu-Ice	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	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.