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Literature summary for 2.7.1.153 extracted from

  • Somoza, J.R.; Koditek, D.; Villasenor, A.G.; Novikov, N.; Wong, M.H.; Liclican, A.; Xing, W.; Lagpacan, L.; Wang, R.; Schultz, B.E.; Papalia, G.A.; Samuel, D.; Lad, L.; McGrath, M.E.
    Structural, biochemical, and biophysical characterization of idelalisib binding to phosphoinositide 3-kinase delta (2015), J. Biol. Chem., 290, 8439-8446.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
coexpression of N-terminally His6-tagged p110 and nontagged p85 subunits in Spodoptera frugiperda Sf21 cells via baculovirus transfection method, recombinant expression of DELTAABC mutant p110delta with the iSH2 domain of p85alpha Homo sapiens

Crystallization (Commentary)

Crystallization (Comment) Organism
purified enzyme mutant, mixing of 25 nl 11 mg/ml protein with 0.9 mM inhibitor delalisib in 20 mM Tris, pH 7.2, 50 mM (NH4)2SO4, 1% v/v ethylene glycol, 1% w/v betaine, 300 mM CHAPS, and 5 mM TCEP, with 25 nl of reservoir solution containing 25% w/v PEG 3350, 0.1 M Bis-Tris, pH 6.5, microseeding in 480 nl of 2.5% w/v n-dodecyl-beta-D-maltoside, 300 nl of 20 mM ligand, and 0.12 ml of 12 mg/ml DELTAABD-p110delta in storage buffer 20 mM Tris, pH 7.2, 50 mM (NH4)2SO4, 1% v/v ethylene glycol, 1% w/v betaine, 300 nM CHAPS, and 5mM TCEP, X-ray diffraction structure determination and analysis at 2.4-2.5 A resolution Homo sapiens

Inhibitors

Inhibitors Comment Organism Structure
idelalisib 5-fluoro-3-phenyl-2-[(1S)-1-(9H-purin-6-ylamino)propyl]quinazolin-4(3H)-one, a PI3Kdelta inhibitor used to treat hematological malignancies. The inhibitor idelalisib is selective, noncovalent, reversible, and ATP-competitive. The compound binds reversibly and noncovalently to the p110delta subunit of the kinase, analysis of binding interactions that confer the potency and selectivity of idelalisib, overview. Idelalisib is a propeller-shaped inhibitor Homo sapiens

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Homo sapiens

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ATP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate Homo sapiens
-
ADP + 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate
-
?

Organism

Organism UniProt Comment Textmining
Homo sapiens O00329 isozyme PI3Kdelta
-

Purification (Commentary)

Purification (Comment) Organism
recombinant N-terminally His6-tagged p110 and nontagged p85 subunits from Spodoptera frugiperda Sf21 cells by nickel affinity chromatography Homo sapiens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate
-
Homo sapiens ADP + 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate
-
?

Synonyms

Synonyms Comment Organism
PI3Kdelta
-
Homo sapiens

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Homo sapiens

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.4
-
assay at Homo sapiens

Cofactor

Cofactor Comment Organism Structure
ATP
-
Homo sapiens