2A1A

PKR kinase domain-eIF2alpha Complex

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Q46	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.
experimental model	PDB	2CPK	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.
experimental model	PDB	1BKX	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.
experimental model	PDB	1FMO	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.
experimental model	PDB	1ATP	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.
experimental model	PDB	1BX6	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		pH 8

Crystal Properties
Matthews coefficient	Solvent content
3.1	60.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.3	α = 90
b = 84.3	β = 90
c = 165.4	γ = 120

Symmetry
Space Group	P 32 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	100	CCD	ADSC QUANTUM 315		2004-04-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C		APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.8	30	99.5	0.057	24.3			17397

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.8	2.9	99.9		0.454	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1Q46 for chain A and a PKR homology model (based on PDB entries 2CPK, 1BKX, 1FMO, 1ATP and 1BX6 for chain B.	2.8	29.51	14967	1662	96.43	0.21286	0.2067	0.21	0.26837	RANDOM	61.895

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]
-0.35	-0.17		-0.35		0.52

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.129
r_dihedral_angle_3_deg	20.212
r_dihedral_angle_4_deg	17.738
r_dihedral_angle_1_deg	5.596
r_scangle_it	2.072
r_angle_refined_deg	1.444
r_scbond_it	1.228
r_mcangle_it	0.987
r_mcbond_it	0.565
r_nbtor_refined	0.312
r_symmetry_hbond_refined	0.248
r_nbd_refined	0.218
r_symmetry_vdw_refined	0.182
r_xyhbond_nbd_refined	0.151
r_chiral_restr	0.098
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3503
Nucleic Acid Atoms
Solvent Atoms	15
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing