Experiment: 4F7F

Structure of Anopheles gambiae odorant binding protein 20

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3QDI	PDB ENTRY 3QDI

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.57	276	0.2 M potassium sodium tartrate, 0.1 M sodium citrate, 1.9 M ammonium sulfate, pH 5.57, VAPOR DIFFUSION, HANGING DROP, temperature 276K

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 130.794	α = 90
b = 36.374	β = 91.22
c = 96.154	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	CCD	NOIR-1		2010-02-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	1.0	ALS	4.2.2

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	1.66	34	88.3	0.062	8.5	3.1	54923	48493	2	2

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	1.66	1.72	94		0.38	2.3

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 (All)	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 3QDI	1.8	24.033	36854	36854	1859	86.59	0.1982	0.1982	0.1954	0.1875	0.2508	0.2436	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]
-1.3819		-2.8249	2.1674		-0.7855

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.542
f_angle_d	1.276
f_chiral_restr	0.076
f_bond_d	0.011
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3636
Nucleic Acid Atoms
Solvent Atoms	302
Heterogen Atoms	70

Software

Software
Software Name	Purpose
JBluIce-EPICS	data collection
Blu-Ice	data collection
PHASER	phasing
PHENIX	refinement
d*TREK	data reduction
d*TREK	data scaling