Experiment: 1C1A

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1VSE	ASV INTEGRASE CATALYTIC DOMAIN (1VSE)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				ROD-SHAPED CRYSTALS WERE GROWN BY SITTING DROP VAPOR DIFFUSION METHOD. RESERVOIR SOLUTION CONTAINED 0.050M KCL, 0.01M MGCL2, 0.1M SODIUM CACODYLATE, 0.02M IMIDAZOLE, PH 7.2, 10% PEG3350, AND 20% (V/V) ETHYLENE GLYCOL. THE DROP CONTAINED 1:1 MIXTURE OF RESERVOIR SOLUTION AND PROTEIN (10-15 MG/ML)

Crystal Properties
Matthews coefficient	Solvent content
2.66	41.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.24	α = 90
b = 46.339	β = 101.76
c = 94.309	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	CCD	ADSC QUANTUM 4		1998-11-17	M	MULTIPLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X9B		NSLS	X9B

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	15	98.6	0.06	15.6	3.4		11250		0.04	43.3

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	3	3.11	96.5		0.177	5.5	2.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD PHASING	THROUGHOUT	ASV INTEGRASE CATALYTIC DOMAIN (1VSE)	3.1	15	0.2	10183	525	5.1	0.256	0.256	0.22	0.337	0.31	RANDOM	48

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]
0.817		-10.779	-3.077		2.26

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24
c_angle_deg	1.41
c_improper_angle_d	0.97
c_bond_d	0.01
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3397
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
SOLVE	phasing
CNS	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.