3FM2

CRYSTAL STRUCTURE OF A PUTATIVE HEME-BINDING PROTEIN (AVA_4353) FROM ANABAENA VARIABILIS ATCC 29413 AT 1.80 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	NANODROP, 0.2M Ca(OAc)2, 40.0% PEG 400, 0.1M HEPES pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.23	α = 90
b = 61.75	β = 90
c = 84.51	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)	2008-11-14	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91162, 0.97870, 0.97828	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	1.8	29.001	98.7	0.038	11.16	3.6		25482		-3	25.168

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	1.8	1.86	98.8		0.432	2.03

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	1.8	29.001	25437	1302	99.49	0.197	0.196	0.219	RANDOM	29.96

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]
-1.21			-1.13		2.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	26.069
r_dihedral_angle_4_deg	19.029
r_dihedral_angle_3_deg	8.863
r_dihedral_angle_1_deg	3.501
r_mcangle_it	1.497
r_angle_refined_deg	1.431
r_scangle_it	1.263
r_mcbond_it	1.031
r_scbond_it	0.945
r_angle_other_deg	0.767
r_symmetry_vdw_refined	0.356
r_symmetry_vdw_other	0.281
r_symmetry_hbond_refined	0.2
r_nbd_refined	0.193
r_nbtor_refined	0.184
r_nbd_other	0.181
r_mcbond_other	0.165
r_xyhbond_nbd_refined	0.142
r_metal_ion_refined	0.135
r_chiral_restr	0.088
r_nbtor_other	0.085
r_symmetry_hbond_other	0.02
r_bond_refined_d	0.016
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	2079
Nucleic Acid Atoms
Solvent Atoms	172
Heterogen Atoms	14

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing