Experiment: 4HAA

Structure of Ribonuclease Binase Glu43Ala/Phe81Ala Mutant

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1GOV	PDB ENTRY 1GOV

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	3.5	298	10 mg/mL protein, reservoir: 0.1 M citric acid, pH 3.5, 3 M sodium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.36	α = 90
b = 50.36	β = 90
c = 196.12	γ = 90

Symmetry
Space Group	P 43

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	MAR CCD 165 mm		2011-11-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	KURCHATOV SNC BEAMLINE K4.4	0.983	KURCHATOV SNC	K4.4

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	1.89	60	97.7	0.091			37967	37967

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	1.89	2.01	89.9		0.492	2.49		5895

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	THROUGHOUT	PDB ENTRY 1GOV	1.9	18.73	35961	35961	1909	98.95	0.1786	0.17714	0.1696	0.20544	0.1944	RANDOM	27.062

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]
2.06			2.06		-4.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	22.801
r_dihedral_angle_4_deg	22.016
r_dihedral_angle_3_deg	14.063
r_dihedral_angle_1_deg	7.591
r_angle_refined_deg	1.782
r_chiral_restr	0.123
r_bond_refined_d	0.017
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3424
Nucleic Acid Atoms
Solvent Atoms	264
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
MOLREP	phasing