4AJC

3D structure of E. coli Isocitrate Dehydrogenase K100M mutant in complex with alpha-ketoglutarate, calcium(II) and adenine nucleotide phosphate

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AI2	PDB ENTRY 1AI2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				1.85M NH4SO4, 50 MM CITRIC ACID/NA2HPO4 BUFFER PH 5.2, 0.1 M NACL AND 0.2 M DTT

Crystal Properties
Matthews coefficient	Solvent content
4.5	72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.715	α = 90
b = 103.715	β = 90
c = 149.577	γ = 90

Symmetry
Space Group	P 43 21 2

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	BRUKER AXS PT135	MONTEL MIRRORS		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR

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	2.3	46.4	100	0.08	24.8	15.1		36981

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	2.3	2.4	100		0.31	3.2	9.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1AI2	2.3	44.302	36019	1822	97.52	0.1769	0.1752	0.209

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]
-1.5443			-1.5443		-5.0273

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.896
f_angle_d	1.101
f_chiral_restr	0.073
f_bond_d	0.008
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3204
Nucleic Acid Atoms
Solvent Atoms	429
Heterogen Atoms	43

Software

Software
Software Name	Purpose
PHENIX	refinement
SAINT	data reduction
SADABS	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.