4NKP

Crystal structure of a putative extracellular heme-binding protein (DESPIG_02683) from Desulfovibrio piger ATCC 29098 at 1.24 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9	277	2.4M ammonium sulfate, 0.1M Bicine pH 9.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
1.9	35.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.964	α = 90
b = 80.964	β = 90
c = 72.927	γ = 90

Symmetry
Space Group	P 4

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M	Flat mirror (vertical focusing); single crystal Si(111) bent monochromator (horizontal focusing)	2013-05-01	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837,0.97879,0.97812	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	1.24	28.625	96.3	0.033	14.7			131689		-3	11.502

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	1.24	1.28	92.2		0.539	1.7

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	1.24	28.625	131689	6635	99.24	0.1291	0.128	0.1494	RANDOM	17.4296

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]
-0.14			-0.14		0.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.263
r_dihedral_angle_4_deg	18.737
r_dihedral_angle_3_deg	12.819
r_dihedral_angle_1_deg	5.325
r_scangle_it	4.693
r_sphericity_free	3.999
r_scbond_it	3.093
r_sphericity_bonded	2.384
r_mcangle_it	2.342
r_mcbond_it	1.52
r_angle_refined_deg	1.23
r_rigid_bond_restr	1.116
r_mcbond_other	0.892
r_angle_other_deg	0.868
r_chiral_restr	0.074
r_bond_refined_d	0.009
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	4140
Nucleic Acid Atoms
Solvent Atoms	559
Heterogen Atoms	57

Software

Software
Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SOLVE	phasing
XSCALE	data scaling
REFMAC	refinement
XDS	data reduction