3DUF

Snapshots of catalysis in the E1 subunit of the pyruvate dehydrogenase multi-enzyme complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	291.15	The protein solution was then mixed in 1:1 volume ratio of crystallization buffer consisting of 8-12 % mono-methyl ether polyethylene glycol (MME PEG) 5000, 0.1 M Na maleate pH 5.5, and the droplet was left to equilibrate against a reservoir of neat crystallization buffer., VAPOR DIFFUSION, SITTING DROP, temperature 291.15K

Crystal Properties
Matthews coefficient	Solvent content
1.86	33.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 69.247	α = 90
b = 231.995	β = 90.74
c = 92.614	γ = 90

Symmetry
Space Group	P 1 21 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	MARMOSAIC 225 mm CCD	mirror	2005-11-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.9795	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.5	66	98.9	0.111	0.111	3.1	3.7	99540	99351	2.6	2.6

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.5	2.64	99.9		0.26	0.302	5.4	3.7

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1W85	2.5	59.44	94324	94324	5027	98.86	0.19233	0.18848	0.26303	RANDOM	42.879

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]
2.23		0.06	-0.31		-1.91

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.56
r_dihedral_angle_4_deg	17.147
r_dihedral_angle_3_deg	13.013
r_scangle_it	10.492
r_scbond_it	8.418
r_mcangle_it	5.28
r_mcbond_it	3.954
r_angle_refined_deg	1.282
r_dihedral_angle_1_deg	1.161
r_nbtor_refined	0.327
r_symmetry_vdw_refined	0.259
r_nbd_refined	0.244
r_xyhbond_nbd_refined	0.146
r_chiral_restr	0.133
r_symmetry_hbond_refined	0.125
r_bond_refined_d	0.008
r_gen_planes_refined	0.007
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	21953
Nucleic Acid Atoms
Solvent Atoms	407
Heterogen Atoms	123

Software

Software
Software Name	Purpose
REFMAC	refinement
MxCuBE	data collection
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing