Experiment: 3KG2

AMPA subtype ionotropic glutamate receptor in complex with competitive antagonist ZK 200775

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3H5V	PDB entries 3H5V and 1FTL
experimental model	PDB	1FTL	PDB entries 3H5V and 1FTL

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1			277	Under paraffin oil, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
4.25	71.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.715	α = 85.32
b = 109.848	β = 84.75
c = 161.13	γ = 78.92

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 315	VERTICALLY COLLIMATING PREMIRROR, LN2 COOLED DOUBLE- CRYSTAL SILICON (111) MONOCHROMATOR, TOROIDAL FOCUSING M2 MIRROR	2008-04-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2		ALS	5.0.2

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	3.6	50	99.9	0.111	17.2	9.7		69301			136.41

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	3.6	3.73	99.9		0.981	2.08	9.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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 3H5V and 1FTL	3.6	49.89	1.96	69301	3483	98.8	0.287	0.286	0.2687	0.296	0.2788	192.72

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]
-15.6279	-1.4252	35.0738	14.5974	-13.3631	1.0304

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	9.696
f_angle_d	0.442
f_chiral_restr	0.027
f_bond_d	0.002
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	22400
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	286

Software

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