1H47

Structures of MECP synthase in complex with (i) CMP and (ii) CMP and product

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1GX1	PDB ENTRY 1GX1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.6		10-20% PEG 2000 MONOETHYL ETHER, 0.1M AMMONIUM SULPHATE, 0.1M SODIUM ACETATE, pH 5.60

Crystal Properties
Matthews coefficient	Solvent content
2.5	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.082	α = 90
b = 117.582	β = 90.21
c = 54.215	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				2002-02-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	30	95.8	0.05	13.2	1.8		141167		2

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	2.07	91		0.38	2	1.8

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	PDB ENTRY 1GX1	1.99	87.71	69794	3708	97.9	0.216	0.214	0.252	RANDOM	31.34

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]
-1.83		-0.33	4.25		-2.43

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.588
r_scangle_it	4.336
r_scbond_it	2.639
r_mcangle_it	1.81
r_angle_refined_deg	1.625
r_mcbond_it	0.994
r_angle_other_deg	0.881
r_symmetry_vdw_other	0.281
r_nbd_other	0.253
r_symmetry_vdw_refined	0.221
r_nbd_refined	0.208
r_xyhbond_nbd_refined	0.152
r_nbtor_other	0.139
r_symmetry_hbond_refined	0.128
r_chiral_restr	0.1
r_metal_ion_refined	0.088
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_gen_planes_other	0.004
r_bond_other_d	0.003
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6974
Nucleic Acid Atoms
Solvent Atoms	171
Heterogen Atoms	170

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing