1EAF

ATOMIC STRUCTURE OF THE CUBIC CORE OF THE PYRUVATE DEHYDROGENASE MULTIENZYME COMPLEX

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THESE COORDINATES ARE FOR THE BINARY COMPLEX WITH HYDROGEN SULPHITE (HSO2OH-). THIS COMPLEX WAS OBTAINED BY SOAKING WITH LIPOAMIDE AND SODIUM DITHIONITE. THE RESULTING ELECTRON DENSITY DOES NOT INDICATE THAT LIPOAMIDE IS BOUND. ON THE OTHER HAND, AN EXTRA DENSITY PEAK IN THE CATALYTIC CENTER IS INTERPRETED AS HSO2OH-. THE LATTER MIGHT BE DERIVED FROM THE HYDROLYSIS OF DITHIONITE. SEE REF 3.

Crystal Properties
Matthews coefficient	Solvent content
4.5	72.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 224.77	α = 90
b = 224.77	β = 90
c = 224.77	γ = 90

Symmetry
Space Group	F 4 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.6	10			0.198	0.198

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	25.5
x_angle_deg	3.1
x_bond_d	0.014
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1816
Nucleic Acid Atoms
Solvent Atoms	147
Heterogen Atoms	4

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing