1KGS | pdb_00001kgs

Crystal Structure at 1.50 A of an OmpR/PhoB Homolog from Thermotoga maritima

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	295	Protein at 12-25 mg/ml in 0.0125 M tris(hydroxymethyl)amino methane (TRIS) pH 8.0, 0.50 M NaCl; precipitating solution: 20% (w/v) PEG 3350, 0.10 M 2-(N-Morpholino)ethanesulfonic acid (MES) pH 6.5, 0.20 M potassium thiocyanate (KSCN), VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.43	49.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.57	α = 90
b = 71.267	β = 106.56
c = 54.605	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	100	CCD	ADSC QUANTUM 4	parabolic collimating mirror	2001-04-13	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	0.9640, 0.9796, 0.9797	NSLS	X8C

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	1.5	20	99.6	0.052	0.052	7.5	5.4	40628	40466	1		14.7

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	1.5	1.57	100		0.139	0.139	5	5.4	5891

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.5	20	40628	40466	2026	99.58	0.1806	0.1806	0.17911	0.1783	0.20984	0.2085	RANDOM	13.834

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]
0.32		-0.22	0.33		-0.78

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	12.756
r_dihedral_angle_1_deg	4.546
r_scangle_it	4.526
r_scbond_it	2.945
r_angle_other_deg	1.834
r_mcangle_it	1.771
r_angle_refined_deg	1.65
r_mcbond_it	1.03
r_symmetry_vdw_refined	0.3
r_symmetry_vdw_other	0.265
r_nbd_refined	0.232
r_nbtor_other	0.197
r_nbd_other	0.194
r_xyhbond_nbd_refined	0.145
r_symmetry_hbond_refined	0.142
r_chiral_restr	0.105
r_xyhbond_nbd_other	0.037
r_bond_refined_d	0.02
r_gen_planes_refined	0.007
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1774
Nucleic Acid Atoms
Solvent Atoms	206
Heterogen Atoms	18

Software

Software
Software Name	Purpose
SOLVE	phasing
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling