1YNV

Asp79 makes a large, unfavorable contribution to the stability of RNase Sa

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION	10.5	291	1.2 M NaH2PO4/0.8M K2HPO4, 0.1 M CAPS, pH 10.5 and 0.2 M Li2SO4., EVAPORATION, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2	38.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 33.305	α = 90
b = 42.992	β = 90
c = 55.802	γ = 90

Symmetry
Space Group	P 21 21 21

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	ADSC QUANTUM 4		2004-10-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	1	APS	14-BM-C

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	1.1	23.81				33194	24374

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1RGG	1.2	23.81	1	33194	24374	1333	99.91	0.1782	0.15393	0.152	0.17777	RANDOM	9.443

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]
0.11			-0.06		-0.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_4_deg	21.92
r_dihedral_angle_2_deg	21.789
r_dihedral_angle_3_deg	10.496
r_dihedral_angle_1_deg	5.749
r_scangle_it	2.036
r_scbond_it	1.562
r_angle_refined_deg	1.052
r_mcangle_it	1.045
r_mcbond_it	0.648
r_nbtor_refined	0.312
r_nbd_refined	0.217
r_symmetry_hbond_refined	0.212
r_symmetry_vdw_refined	0.165
r_xyhbond_nbd_refined	0.153
r_chiral_restr	0.073
r_bond_refined_d	0.006
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	746
Nucleic Acid Atoms
Solvent Atoms	156
Heterogen Atoms	5

Software

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