1OQ4

The Crystal Structure of the Complex between Stearoyl Acyl Carrier Protein Desaturase from Ricinus Communis (Castor Bean) and Azide.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	293	70mM Sodium Azide, 12-15% Peg4000, 80mM Cacodylate, 200 mM Magnesium Acetate, 75mM Ammonium Sulphate, 0.2% Octyl glucoside and water exchanged for 20% MPD for freezing, pH 6.2, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.37	47.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.774	α = 90
b = 145.21	β = 90
c = 192.88	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	110	IMAGE PLATE	MARRESEARCH		1998-10-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I711	0.986	MAX II	I711

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.4	25	99.4	0.057	14.8		90664	90115	-3	-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.4	2.46	97.9		0.299

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	MOLECULAR REPLACEMENT	THROUGHOUT	1AFR	2.4	24.92	90664	87879	2236	99.39	0.22888	0.22888	0.22856	0.24158	RANDOM	12.646

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]
-1.76			-0.68		2.44

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.971
r_scangle_it	2.523
r_scbond_it	1.562
r_angle_refined_deg	1.116
r_mcangle_it	0.748
r_symmetry_hbond_refined	0.44
r_symmetry_vdw_refined	0.398
r_mcbond_it	0.365
r_nbd_refined	0.208
r_xyhbond_nbd_refined	0.152

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.971
r_scangle_it	2.523
r_scbond_it	1.562
r_angle_refined_deg	1.116
r_mcangle_it	0.748
r_symmetry_hbond_refined	0.44
r_symmetry_vdw_refined	0.398
r_mcbond_it	0.365
r_nbd_refined	0.208
r_xyhbond_nbd_refined	0.152
r_chiral_restr	0.077
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	16837
Nucleic Acid Atoms
Solvent Atoms	368
Heterogen Atoms	30

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.