2QTQ

Crystal structure of a predicted dna-binding transcriptional regulator (saro_1072) from novosphingobium aromaticivorans dsm at 1.85 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.9	277	NANODROP, 0.2M K2NO3, 20.0% PEG 3350, No Buffer pH 6.9, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.75	55.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.465	α = 90
b = 98.762	β = 90
c = 164.039	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	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2007-06-30	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837, 0.97926, 0.97870	SSRL	BL11-1

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	1.85	29.501	98.3	0.059	0.059	14.2	4.2		91044			31.38

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	1.85	1.9	97.4		0.747	0.747	1.6	4.2	6619

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	MAD	THROUGHOUT	1.85	29.501	91002	4544	97.98	0.186	0.185	0.216	RANDOM	30.383

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]
-1.96			2.95		-0.99

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.319
r_dihedral_angle_4_deg	16.964
r_dihedral_angle_3_deg	13.321
r_scangle_it	6.062
r_dihedral_angle_1_deg	5.317
r_scbond_it	4.805
r_mcangle_it	2.518
r_mcbond_it	1.965
r_angle_refined_deg	1.241
r_angle_other_deg	0.912
r_mcbond_other	0.478
r_nbd_refined	0.22
r_symmetry_vdw_refined	0.202
r_nbd_other	0.193
r_nbtor_refined	0.179
r_symmetry_vdw_other	0.174
r_xyhbond_nbd_refined	0.155
r_symmetry_hbond_refined	0.144
r_nbtor_other	0.085
r_chiral_restr	0.075
r_bond_refined_d	0.015
r_gen_planes_refined	0.005
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6313
Nucleic Acid Atoms
Solvent Atoms	672
Heterogen Atoms	108

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHARP	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
MOSFLM	data reduction