2QTW

The Crystal Structure of PCSK9 at 1.9 Angstroms Resolution Reveals structural homology to Resistin within the C-terminal domain

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		10.5	298	20% PEG6000, 0.2M sodium chloride, pH 10.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K, pH 10.50

Crystal Properties
Matthews coefficient	Solvent content
2.28	45.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.427	α = 90
b = 70.149	β = 90
c = 148.59	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	ADSC QUANTUM 315		2006-06-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.3		ALS	5.0.3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	99.9	0.072	0.072	22.5	4		52284

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	1.97	99.9		0.699	0.699	1.76	3.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.9	50	49516	2654	99.8	0.194	0.192	0.239	RANDOM	23.52

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]
-1.34			-0.33		1.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.12
r_dihedral_angle_4_deg	17.969
r_dihedral_angle_3_deg	14.412
r_dihedral_angle_1_deg	6.843
r_scangle_it	6.216
r_scbond_it	4.032
r_mcangle_it	2.604
r_mcbond_it	1.598
r_angle_refined_deg	1.49
r_angle_other_deg	0.902
r_mcbond_other	0.356
r_symmetry_vdw_other	0.247
r_symmetry_hbond_refined	0.225
r_nbd_refined	0.205
r_nbd_other	0.2
r_xyhbond_nbd_refined	0.194
r_nbtor_refined	0.179
r_metal_ion_refined	0.175
r_symmetry_vdw_refined	0.099
r_nbtor_other	0.091
r_chiral_restr	0.087
r_bond_refined_d	0.015
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
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	4347
Nucleic Acid Atoms
Solvent Atoms	320
Heterogen Atoms	15

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing