3SC3

Crystal structure of a Putative DNA replication regulator Hda (Sama_1916) from SHEWANELLA AMAZONENSIS SB2B at 3.00 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	1.26M (NH4)2SO4, 0.1M HEPES pH 7.5, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.5	64.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 162.44	α = 90
b = 162.44	β = 90
c = 162.44	γ = 90

Symmetry
Space Group	I 2 3

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 325 mm CCD	Flat mirror (vertical focusing); single crystal Si(111) bent monochromator (ho rizontal focusing)	2008-11-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1		SSRL	BL11-1

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	46.881	99.9	0.143	10.68			14422		-3	91.955

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	3.17	99.9		0.014	1.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	SAD	3.001	46.881	1.39	14406	1449	99.9	0.2267	0.2237	0.2532	121.4939

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]
-29.6512			-29.6512		-29.6512

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.668
f_angle_d	0.55
f_chiral_restr	0.035
f_bond_d	0.002
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3310
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	25

Software

Software
Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
XSCALE	data scaling
PHENIX	refinement
XDS	data reduction
SHELXD	phasing

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.