1GJV

Branched-chain alpha-ketoacid dehydrogenase kinase (BCK) complxed with ATP-gamma-S

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		BRANCHED-CHAIN ALPHA-KETOACID DEHYDROGENASE KINASE (BCK) SELENOMETHIONINE VARIANT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.5	293	VAPOR DIFFUSION 20C EQUAL AMOUNTS OF BCK (20 MG/ML IN 50 MM HEPES PH 7.5, 1 M SODIUM CHLORIDE,250 MM POTASSIUM CHLORIDE, 300 MM ARGININE, 20 MM BETA-MERCAPTOETHANOL 2 MM BENZAMIDINE, 2 MM MG-ATPGAMMAS, 2 MM MAGNESIUM CHLORIDE, 0.5 MM PMSF, 10% (W/V) GLYCEROL) AND RESERVOIR (8%(W/V) PEG-6000, 5% (V/V) ETHYLENE GLYCOL, 1 M NACL, 20 MM BETA-MERCAPTOETHANOL)

Crystal Properties
Matthews coefficient	Solvent content
3.4	64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.722	α = 90
b = 127.722	β = 90
c = 74.314	γ = 90

Symmetry
Space Group	P 42 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	IMAGE PLATE	MSC	OSMIC MIRROR SYSTEM	2001-04-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	2.7	36.9	99.6	0.053	24.4	4.6		17401		-3	70

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	2.7	2.8	96.8		0.533	2	3.6

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	BRANCHED-CHAIN ALPHA-KETOACID DEHYDROGENASE KINASE (BCK) SELENOMETHIONINE VARIANT	2.7	36.94	16665	1430	95.5	0.218	0.218	0.269	RANDOM	56.6

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]
2.71			2.71		-5.41

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.1
c_scangle_it	3.34
c_mcangle_it	2.48
c_scbond_it	2.13
c_angle_deg	1.6
c_mcbond_it	1.43
c_improper_angle_d	1.11
c_bond_d	0.011
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2526
Nucleic Acid Atoms
Solvent Atoms	70
Heterogen Atoms	38

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing