1RBJ

RIBONUCLEASE B COMPLEX WITH D(TETRA-(DEOXY-ADENYLATE))

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		277	VAPOR DIFFUSION, temperature 277.00K

Crystal Properties
Matthews coefficient	Solvent content
2.58	52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.45	α = 90
b = 44.45	β = 90
c = 156.5	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		DIFFRACTOMETER	ENRAF-NONIUS CAD4		1984-09-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1

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	2.6		69.5	0.04		2		3431

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.7	8	3071			0.163			15.4

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]

RMS Deviations
Key	Refinement Restraint Deviation
t_angle_deg	2.982
t_it	2.19
t_nbd	0.083
t_bond_d	0.02
t_gen_planes	0.02
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	951
Nucleic Acid Atoms	84
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
ORESTES	data collection
TNT	refinement
ORESTES	data reduction