1H2T

Structure of the human nuclear cap-binding-complex (CBC) in complex with a cap analogue m7GpppG

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1H6K	PDB ENTRY 1H6K

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6		0.25 TO 1 % PEG 4000, 100 MM MES PH6, 75 TO 100 MM MAGNESIUM FORMATE, pH 6.00

Crystal Properties
Matthews coefficient	Solvent content
2.9	57.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.78	α = 90
b = 112.78	β = 90
c = 158.31	γ = 120

Symmetry
Space Group	P 31 2 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 315r		2001-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	2.15	20	99.8	0.079	5.3	7		63766			30.7

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	2.15	2.21	99.8		0.398	1.8	4.6

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	PDB ENTRY 1H6K	2.1	19.76	68137	3419	99.6	0.232	0.232	0.269	RANDOM	46.5

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]
-3.75	-0.27		-3.75		7.51

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	20.4
c_scangle_it	4.57
c_scbond_it	3.4
c_mcangle_it	3.27
c_mcbond_it	3.11
c_angle_deg	1.1
c_improper_angle_d	0.78
c_bond_d	0.006
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	6939
Nucleic Acid Atoms
Solvent Atoms	365
Heterogen Atoms	52

Software

Software
Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing