4NPV

Crystal structure of human PDE1B bound to inhibitor 7A (6,7,8-trimethoxy-N-(pentan-3-yl)quinazolin-4-amine)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.5		0.1 M TRIS-HCL, 0.2 M MGCL2, 125 UM 5-(5-BROMO-2-PROPOXYPHENYL)-3-PROPYL-1H-PYRAZOLO[4,3-D]PYRIMIDIN-7(6H)-ONE, 15% PEG 8000, PH 8.5, VAPOR DIFFUSION, TEMPERATURE 298K

Crystal Properties
Matthews coefficient	Solvent content
3.13	60.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.416	α = 90
b = 88.416	β = 90
c = 134.973	γ = 90

Symmetry
Space Group	P 43 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	MARMOSAIC 225 mm CCD		2008-06-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-D		APS	21-ID-D

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.4	50	100				21750

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	2.4	25.82	21575	1112	100	0.207	0.205	0.236	RANDOM	57.37

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]
-5.7221			-5.7221		11.4442

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	18.49
t_omega_torsion	2.23
t_angle_deg	0.99
t_bond_d	0.008
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	18.49
t_omega_torsion	2.23
t_angle_deg	0.99
t_bond_d	0.008
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2607
Nucleic Acid Atoms
Solvent Atoms	174
Heterogen Atoms	24

Software

Software
Software Name	Purpose
MOLREP	phasing
BUSTER	refinement
DENZO	data reduction
SCALEPACK	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.