2ILV

crystal structure of multifunctional sialyltransferase from Pasteurella multocida with CMP and alpha-lactose bound

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2EX1	PDB ENTRY 2EX1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293	30%, PEG MME 2000, 0.2 M NaBr, 0.4% Triton X-100 soaked in 20 mM alpha-lactose for one hour, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.67	53.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.912	α = 90
b = 63.627	β = 98.36
c = 63.782	γ = 90

Symmetry
Space Group	P 1 21 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	ADSC QUANTUM 315		2006-05-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.97945	SSRL	BL11-1

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	2.15	63.63	93.5	0.083	9.6	2.3		25036			31.564

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)
1	2.15	2.21	95.3		0.381	2.1	2.3	4378

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2EX1	2.27	63.12	20108	1088	92.78	0.21911	0.21695	0.25725	RANDOM	32.434

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]
2.85		-0.26	-0.17		-2.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.724
r_dihedral_angle_4_deg	17.955
r_dihedral_angle_3_deg	17.657
r_dihedral_angle_1_deg	5.917
r_scangle_it	2.193
r_scbond_it	1.466
r_angle_refined_deg	1.402
r_mcangle_it	1.011
r_mcbond_it	0.599
r_nbtor_refined	0.31
r_nbd_refined	0.213
r_symmetry_hbond_refined	0.209
r_symmetry_vdw_refined	0.204
r_xyhbond_nbd_refined	0.16
r_chiral_restr	0.092
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3108
Nucleic Acid Atoms
Solvent Atoms	228
Heterogen Atoms	44

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing