2IJX

Crystal structure of PCNA3 monomer from Sulfolobus solfataricus.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1UD9	PDB entry 1UD9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	12.5% PEG 3350, 0.15 M NH4Cl, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.773	α = 90
b = 85.773	β = 90
c = 264.21	γ = 90

Symmetry
Space Group	P 41 21 2

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		2004-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.100	NSLS	X25

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	1.9	50	96.3	0.102	32.2	23.3	75947	75947

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	1.9	1.92	65.6		0.491	2.2	5.8

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1UD9	1.9	29.62	75802	74272	1530	100	0.20493	0.20401	0.25055	RANDOM	38.571

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]
-0.38			-0.38		0.77

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.681
r_dihedral_angle_4_deg	16.618
r_dihedral_angle_3_deg	15.974
r_dihedral_angle_1_deg	7.262
r_scangle_it	3.582
r_scbond_it	2.505
r_angle_refined_deg	1.641
r_mcangle_it	1.393
r_mcbond_it	1.157
r_angle_other_deg	1.096
r_mcbond_other	0.35
r_symmetry_vdw_other	0.264
r_symmetry_vdw_refined	0.242
r_nbd_refined	0.215
r_nbd_other	0.188
r_xyhbond_nbd_refined	0.182
r_nbtor_refined	0.175
r_symmetry_hbond_refined	0.175
r_chiral_restr	0.118
r_nbtor_other	0.088
r_bond_refined_d	0.016
r_xyhbond_nbd_other	0.012
r_gen_planes_refined	0.006
r_bond_other_d	0.003
r_gen_planes_other	0.003
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7736
Nucleic Acid Atoms
Solvent Atoms	535
Heterogen Atoms	80

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing