3F5H

Crystal structure of fused docking domains from PikAIII and PikAIV of the pikromycin polyketide synthase

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	277	20 mM HEPES pH 7.8, 150 mM NaCl, 55% 2-methyl-2,4-pentanediol, 200 mM sodium acetate pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.016	α = 90
b = 117.944	β = 90
c = 41.773	γ = 90

Symmetry
Space Group	C 2 2 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	K-B PAIR OF BIOMORPH MIRRORS FOR VERTICAL AND HORIZONTAL FOCUSING	2008-02-10	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	MARMOSAIC 300 mm CCD	K-B PAIR OF BIOMORPH MIRRORS FOR VERTICAL AND HORIZONTAL FOCUSING	2008-04-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	0.97934	APS	23-ID-D
2	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.97940	APS	23-ID-B

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
1,2	1.75	50	99.2	0.069	0.069	15.586	3.6	15084	14954			20.3

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)
	1.75	1.81	98		0.507	0.507	2.1	3.1	1471

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.75	32.76	15079	14942	750	99.09	0.203	0.203	0.201	0.25	RANDOM	26.546

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]
3.52			-1.88		-1.65

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.241
r_dihedral_angle_4_deg	16.877
r_dihedral_angle_3_deg	12.765
r_scangle_it	5.759
r_dihedral_angle_1_deg	3.958
r_scbond_it	3.211
r_mcangle_it	1.652
r_angle_refined_deg	1.216
r_mcbond_it	0.802
r_chiral_restr	0.071

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.241
r_dihedral_angle_4_deg	16.877
r_dihedral_angle_3_deg	12.765
r_scangle_it	5.759
r_dihedral_angle_1_deg	3.958
r_scbond_it	3.211
r_mcangle_it	1.652
r_angle_refined_deg	1.216
r_mcbond_it	0.802
r_chiral_restr	0.071
r_bond_refined_d	0.011
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	919
Nucleic Acid Atoms
Solvent Atoms	151
Heterogen Atoms	1

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection

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 R01GM133198.