2QKM

The crystal structure of fission yeast mRNA decapping enzyme Dcp1-Dcp2 complex

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2A6T	PDB entries 2A6T, 2QKL
experimental model	PDB	2QKL	PDB entries 2A6T, 2QKL

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	285	8% Ethylene Glycol, 100 mM HEPES pH 7.0, 11.6% MPD, 4.4% PEG 4000 and 10 mM ATP, VAPOR DIFFUSION, HANGING DROP, temperature 285K

Crystal Properties
Matthews coefficient	Solvent content
2.72	54.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.289	α = 90
b = 161.443	β = 97.49
c = 91.386	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	ADSC QUANTUM 315		2006-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.9792	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	2.8	90.54	99.9	0.13		3.6	48289	48226	2	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	2.8	2.87	99.9		0.323	3.3	3.6

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 entries 2A6T, 2QKL	2.8	20	48289	45695	2373	99.88	0.23611	0.23339	0.28923	RANDOM	57.918

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]
5.02		0.82	0.84		-5.65

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.251
r_dihedral_angle_3_deg	18.753
r_dihedral_angle_4_deg	17.63
r_dihedral_angle_1_deg	5.59
r_scangle_it	1.694
r_angle_refined_deg	1.241
r_mcangle_it	1.131
r_scbond_it	1.048
r_mcbond_it	0.633
r_nbtor_refined	0.312
r_symmetry_vdw_refined	0.26
r_nbd_refined	0.225
r_symmetry_hbond_refined	0.213
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.09
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
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	11704
Nucleic Acid Atoms
Solvent Atoms	108
Heterogen Atoms	62

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
SCALA	data scaling
PHASES	phasing