1JCN

BINARY COMPLEX OF HUMAN TYPE-I INOSINE MONOPHOSPHATE DEHYDROGENASE WITH 6-CL-IMP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	277	PROTEIN SOLUTION: 7MGS/ML PROTEIN, 50 MM TRIS HCL (PH 8.0), 50 MM KCL, 2MM EDTA, 1MM DTT, 5MM 6-CL-IMP. WELL SOLUTION: 9% (W/V) PEG-800, 100 MM TRIS HCL (PH 8.0), 1.0 M LICL, 24 MM BETAMERCAPTOETHANOL (2+2 MICROLITER DROPS), pH 8.00, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3	59.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 148.108	α = 90
b = 148.108	β = 90
c = 122.016	γ = 90

Symmetry
Space Group	I 4

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	93	CCD	CUSTOM-MADE		2000-05-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1		CHESS	A1

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	39.74	97.7	0.093	0.093	6.3	3	44411	44411			28

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)
1	2.5	2.64	93.7		0.366	0.366	1.9	2.8

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	CORE DOMAIN OF IMPDH MONOMER FROM HUMAN TYPE II/6-CL-IMP COMPLEX STRUCTURE	2.5	39.74	44410	44410	4483	97.4	0.238	0.238	0.238	0.271	RANDOM	39.8

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]
-0.22			-0.22		0.44

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.6
c_scangle_it	3.17
c_mcangle_it	2.55
c_scbond_it	2.13
c_angle_deg	1.5
c_mcbond_it	1.48
c_improper_angle_d	0.92
c_bond_d	0.007
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	5878
Nucleic Acid Atoms
Solvent Atoms	294
Heterogen Atoms	44

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
CNS	refinement
DPS	data reduction
CCP4	data scaling
CNS	phasing