3HND

Crystal structure of human ribonucleotide reductase 1 bound to the effector TTP and substrate GDP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.9	298	0.1 M Tris-HCl pH 7.9, 0.2 M LiSO4, 19% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.159	α = 90
b = 115.834	β = 90
c = 221.305	γ = 90

Symmetry
Space Group	P 21 21 21

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	MARMOSAIC 300 mm CCD		2008-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.9000	APS	23-ID-B

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	3.1	50	98.7	0.104	12.417	4.8		34010

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)
	3.1	3.21	96.2		0.583		4

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 3HNC	3.21	49.94	29455	1576	98.13	0.18347	0.17966	0.25389	RANDOM	104.779

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]
1.92			0.1		-2.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.636
r_dihedral_angle_3_deg	21.499
r_dihedral_angle_4_deg	20.46
r_dihedral_angle_1_deg	6.912
r_scangle_it	2.097
r_angle_refined_deg	1.55
r_scbond_it	1.21
r_mcangle_it	0.871
r_mcbond_it	0.474
r_nbtor_refined	0.319
r_nbd_refined	0.245
r_symmetry_vdw_refined	0.244
r_xyhbond_nbd_refined	0.172
r_symmetry_hbond_refined	0.139
r_chiral_restr	0.102
r_metal_ion_refined	0.065
r_bond_refined_d	0.014
r_gen_planes_refined	0.005
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_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	11397
Nucleic Acid Atoms
Solvent Atoms	32
Heterogen Atoms	136

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345	data collection
PHASER	phasing