3A2B

Crystal Structure of Serine Palmitoyltransferase from Sphingobacterium multivorum with substrate L-serine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	21.6%W/V PEG 4000, 0.2M Sodium acetate, 0.1M Tris-HCl buffer, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.67	α = 90
b = 61.67	β = 90
c = 207.76	γ = 90

Symmetry
Space Group	P 41 21 2

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 4r		2003-03-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL38B1	1.0	SPring-8	BL38B1

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	2.29	58.722	99.4	0.061	30.35	1.81	19738	18611			18.5

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	2.3	2.38	99.1		0.107	16.43	1.85

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1FC4	2.3	19.86	18667	18598	951	99.6	0.211	0.27	random	27.07

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]
5.57			5.57		-11.14

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.1
c_scangle_it	2.94
c_scbond_it	2.12
c_mcangle_it	2.09
c_mcbond_it	1.33
c_angle_deg	1.2
c_improper_angle_d	1.13
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3019
Nucleic Acid Atoms
Solvent Atoms	285
Heterogen Atoms	22

Software

Software
Software Name	Purpose
MOLREP	phasing
CNS	refinement
HKL-2000	data collection
HKL-2000	data reduction
SCALEPACK	data scaling