2FZT

CRYSTAL STRUCTURE OF a putative nucleic acid binding protein (TM0693) FROM THERMOTOGA MARITIMA MSB8 AT 2.05 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP	7.5	277	10.0% iso-Propanol, 20.0% PEG-4000, 0.1M HEPES pH 7.5, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.2	43.66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.63	α = 90
b = 27.43	β = 102.6
c = 65.38	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 315		2005-12-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	0.9797, 0.9999	ALS	8.2.2

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	2.05	50	99.9	0.098	8.5	3.6		11175

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	2.05	2.1	100	100	0.514		3.6

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.05	21.7	11154	532	99.86	0.197	0.197	0.194	0.254	RANDOM	24.138

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]
-0.55		-0.8	0.16		0.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.751
r_dihedral_angle_4_deg	21.959
r_dihedral_angle_3_deg	13.789
r_scangle_it	7.674
r_scbond_it	5.454
r_dihedral_angle_1_deg	4.792
r_mcangle_it	2.696
r_mcbond_it	2.198
r_angle_refined_deg	1.226
r_angle_other_deg	0.833
r_mcbond_other	0.569
r_symmetry_vdw_other	0.23
r_nbd_refined	0.211
r_nbd_other	0.168
r_xyhbond_nbd_refined	0.168
r_symmetry_vdw_refined	0.168
r_nbtor_refined	0.165
r_symmetry_hbond_refined	0.134
r_nbtor_other	0.081
r_chiral_restr	0.074
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1263
Nucleic Acid Atoms
Solvent Atoms	140
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
DENZO	data reduction
SHELX	phasing
autoSHARP	phasing