2Q2X

Crystal Structure of the ECH2 decarboxylase domain of CurF from Lyngbya majuscula

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.15	277.15	1.5M sodium malonate pH 7.0, 50 mM HEPES pH 6.8, 20 mM Tris pH 7.9, 500 mM NaCl, 10% glycerol, pH 7.15, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K

Crystal Properties
Matthews coefficient	Solvent content
2.74	55.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 105.433	α = 90
b = 105.433	β = 90
c = 46.314	γ = 120

Symmetry
Space Group	P 3 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	MARMOSAIC 300 mm CCD	K-B pair of biomorph mirrors for vertical and horizontal focusing	2006-08-16	M	MAD
2	1
3	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	1.0332,0.97942,0.97956,0.95373	APS	23-ID-B

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	50	99.9	0.063	13.4	11	20390	20390	1	1	33.2

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	2.07	100		0.682	3.6	10.4	2020

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2	41.31	21970	20378	1024	99.91	0.204	0.202	0.25	RANDOM	37.711

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]
0.37	0.18		0.37		-0.55

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.897
r_dihedral_angle_3_deg	15.587
r_dihedral_angle_4_deg	12.505
r_scangle_it	6.292
r_dihedral_angle_1_deg	5.327
r_scbond_it	4.054
r_mcangle_it	1.782
r_angle_refined_deg	1.245
r_mcbond_it	1.037
r_nbtor_refined	0.303

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.897
r_dihedral_angle_3_deg	15.587
r_dihedral_angle_4_deg	12.505
r_scangle_it	6.292
r_dihedral_angle_1_deg	5.327
r_scbond_it	4.054
r_mcangle_it	1.782
r_angle_refined_deg	1.245
r_mcbond_it	1.037
r_nbtor_refined	0.303
r_nbd_refined	0.202
r_symmetry_vdw_refined	0.188
r_symmetry_hbond_refined	0.154
r_xyhbond_nbd_refined	0.145
r_chiral_restr	0.088
r_bond_refined_d	0.011
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1887
Nucleic Acid Atoms
Solvent Atoms	145
Heterogen Atoms	12

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
HKL-2000	data reduction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.