2INB

Crystal structure of an XisH family protein (ZP_00107633.1) from Nostoc punctiforme PCC 73102 at 1.60 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP, NANODROP	4.2	277	0.2M (NH4)2SO4, 10.0% Glycerol, 20.0% PEG-300, 0.1M Phosphate Citrate, pH 4.2, VAPOR DIFFUSION, SITTING DROP, NANODROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.554	α = 90
b = 59.554	β = 90
c = 71.563	γ = 120

Symmetry
Space Group	P 31 2 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		2006-08-30	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	0.9740, 0.9798, 0.9799	ALS	8.2.2

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	1.6	29.775	100	0.071	0.071	7	5.1		19879

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	1.6	1.64	100		0.607	0.607	1.3	4.9	1434

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	1.6	29.775	19850	1015	99.92	0.16	0.16	0.158	0.191	RANDOM	15.661

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]
0.03	0.01		0.03		-0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.832
r_dihedral_angle_4_deg	15.261
r_dihedral_angle_3_deg	11.19
r_dihedral_angle_1_deg	6.714
r_scangle_it	6.357
r_scbond_it	4.671
r_mcangle_it	2.874
r_mcbond_it	2.118
r_angle_refined_deg	1.609
r_angle_other_deg	0.971
r_mcbond_other	0.516
r_symmetry_vdw_other	0.302
r_nbd_refined	0.23
r_symmetry_vdw_refined	0.2
r_nbd_other	0.199
r_nbtor_refined	0.181
r_xyhbond_nbd_refined	0.173
r_symmetry_hbond_refined	0.163
r_chiral_restr	0.104
r_nbtor_other	0.087
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d	0.004
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1032
Nucleic Acid Atoms
Solvent Atoms	136
Heterogen Atoms	13

Software

Software
Software Name	Purpose
MolProbity	model building
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing
RESOLVE	phasing