Experiment: 3Q9N

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	2D59	PDB ENTRIES 2D59, 1MJO
experimental model	PDB	1MJO	PDB ENTRIES 2D59, 1MJO

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6	292	0.2 M LiCl 0.1 M MES, PEG 6000, VAPOR DIFFUSION, SITTING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.122	α = 89.78
b = 56.556	β = 112.42
c = 56.977	γ = 90.03

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	100	CCD	ADSC QUANTUM 210		2009-05-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

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	37.06	98				40222

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)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRIES 2D59, 1MJO	2	37.06	1.98	41421	40212	2026	97.1	0.192	0.19	0.1839	0.24	0.234

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]
-0.2109	0.2089	-0.1189	0.2794	-0.1482	-0.0685

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	19.639
f_angle_d	1.119
f_chiral_restr	0.083
f_plane_restr	0.015
f_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4524
Nucleic Acid Atoms
Solvent Atoms	276
Heterogen Atoms	105

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling