3OTK

Structure and mechanisim of core 2 beta1,6-n-acetylglucosaminyltransferase: a Metal-ion independent gt-a glycosyltransferase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	296	22% polyethylene glycol 4000, 0.15 M glycine pH 9.0, 0.6 M LiCl, 1.5% 1,2,3 heptanetriol, 25 mM UDP-GlcNAc, VAPOR DIFFUSION, HANGING DROP, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
2.81	56.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.874	α = 90
b = 101.02	β = 93.42
c = 136.612	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 210		2007-06-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	0.9771	CHESS	A1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.2	50	93.2	0.134	0.116	10.6	3.7	100602	93761		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.21	2.29	74.6		0.587	0.676	2.1	2.5

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.3	50	84572	80656	4289	95.37	0.16806	0.16528	0.21926	RANDOM	43.771

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]
-1.54		1.05	-1.8		3.46

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.334
r_scangle_it	19.005
r_dihedral_angle_4_deg	17.594
r_dihedral_angle_3_deg	14.852
r_scbond_it	14.092
r_dihedral_angle_1_deg	5.258
r_mcangle_it	2.599
r_angle_refined_deg	1.172
r_mcbond_it	1.02
r_nbtor_refined	0.323
r_nbd_refined	0.22
r_symmetry_hbond_refined	0.188
r_symmetry_vdw_refined	0.181
r_xyhbond_nbd_refined	0.175
r_metal_ion_refined	0.112
r_chiral_restr	0.081
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
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_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	11832
Nucleic Acid Atoms
Solvent Atoms	533
Heterogen Atoms	254

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling