2QUS | pdb_00002qus

Hammerhead Ribozyme G12A mutant pre-cleavage

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	Other		small helical fragments

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.39

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 27.926	α = 74.57
b = 53.03	β = 81.37
c = 71.963	γ = 75.61

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		IMAGE PLATE	RIGAKU			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

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	2.4	25.67	86.05	0.054	8		12926	11632

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		THROUGHOUT	small helical fragments	2.4	25.67	12926	1294	86.05	0.191	0.184	0.1918	0.253	0.2585	RANDOM	58.401

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]
0.77	0.71	-0.09	-0.34	-0.19	-0.66

RMS Deviations
Key	Refinement Restraint Deviation
r_angle_refined_deg	1.85
r_scangle_it	1.715
r_scbond_it	1.08
r_nbtor_refined	0.282
r_symmetry_hbond_refined	0.196
r_xyhbond_nbd_refined	0.194
r_nbd_refined	0.189
r_symmetry_vdw_refined	0.162
r_metal_ion_refined	0.117
r_chiral_restr	0.105
r_bond_refined_d	0.009
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	2966
Solvent Atoms	131
Heterogen Atoms	16

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction