8PPE

Human inositol 1,4,5-trisphosphate 3-kinase A (IP3K) catalytic domain in complex with DL-6-deoxy-6-phosphoryloxymethyl-scyllo-inositol 1,2,4-trisphosphate/ADP/Mn

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1W2C	Chain A

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	291	0.81 M sodium citrate, 0.1M Tris pH 8.5 and 0.1 M NaCl. Protein:precipitant ratio 1:1. Protein concentration: 17 mg/ml. Protein buffer: 20 mM Tris pH 7.5, 50 mM ammonium sulfate and 2 mM DTT. Soaking overnight with 0.83 M sodium citrate, 0.1 M Tris pH 8.5, 0.1 M NaCl, 30 mM ligand, 3 mM ADP and 3 mM MnCl2. Cryoprotectant: Glycerol 30%.

Crystal Properties
Matthews coefficient	Solvent content
2.68	54.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.554	α = 90
b = 97.547	β = 90
c = 190.44	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M	KB mirrors, rectangular beam shape	2023-03-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALBA BEAMLINE XALOC	0.979185	ALBA	XALOC

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Rpim I (All)	CC (Half)	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	1.59	58.28	95.4	0.014	1	22.8	13.2		80256			29

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.59	1.66	64.8		0.497	0.566	1.3	11.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	FOURIER SYNTHESIS	THROUGHOUT	1.59	58.28	76237	4019	88.2	0.20191	0.19987	0.24002	RANDOM	37.876

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]
0.18			0.05		-0.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	23.945
r_dihedral_angle_4_deg	16.183
r_dihedral_angle_3_deg	15.761
r_long_range_B_refined	6.889
r_long_range_B_other	6.787
r_dihedral_angle_1_deg	5.961
r_scangle_other	4.422
r_mcangle_other	3.558
r_mcangle_it	3.557
r_scbond_it	2.794
r_scbond_other	2.788
r_mcbond_it	2.328
r_mcbond_other	2.325
r_angle_other_deg	1.338
r_angle_refined_deg	1.315
r_chiral_restr	0.064
r_bond_refined_d	0.006
r_gen_planes_refined	0.006
r_bond_other_d	0.003
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4296
Nucleic Acid Atoms
Solvent Atoms	388
Heterogen Atoms	120

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
STARANISO	data scaling
REFMAC	phasing
Coot	model building
PDB_EXTRACT	data extraction