Experiment: 3Q9U

In silico and in vitro co-evolution of a high affinity complementary protein-protein interface

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3Q9N	pdb entry 3q9n

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	292	0.2 M NaF 20 % PEG 3350, pH 7, VAPOR DIFFUSION, SITTING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
2.55	51.69

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.901	α = 89.96
b = 57.62	β = 90.14
c = 58.23	γ = 113.44

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		CCD	MARMOSAIC 225 mm CCD		2009-06-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-2	0.8729	ESRF	ID23-2

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	50	83.4				27228

Refinement

Statistics
Diffraction ID	Structure Solution 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 (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	pdb entry 3q9n	2.3	37.738	2	28575	24632	1263	86.2	0.2441	0.24	0.2359	0.3175	0.3111	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]
-0.3331	-0.4377	0.6283	1.0332	0.3077	-0.7001

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	21.192
f_angle_d	1.327
f_chiral_restr	0.085
f_plane_restr	0.01
f_bond_d	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4521
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	96

Software

Software
Software Name	Purpose
PHENIX	refinement