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Literature summary for 2.7.7.B22 extracted from

  • Voigt, F.; Wiedemann, L.; Zuliani, C.; Querques, I.; Sebe, A.; Mates, L.; Izsvak, Z.; Ivics, Z.; Barabas, O.
    Sleeping Beauty transposase structure allows rational design of hyperactive variants for genetic engineering (2016), Nat. Commun., 7, 11126.
    View publication on PubMedView publication on EuropePMC

Application

Application Comment Organism
molecular biology Sleeping Beauty is a prominent Tc1/mariner superfamily DNA transposon that provides a popular genome engineering tool in a broad range of organisms. It is mobilized by a transposase enzyme that catalyses DNA cleavage and integration at short specific sequences at the transposon ends Homo sapiens

Cloned(Commentary)

Cloned (Comment) Organism
recombinant expression of N-terminally thioredoxinA-6xHis-tagged wild-type and mutant enzymes in Escherichia coli strain RosettaII(DE3) Homo sapiens

Crystallization (Commentary)

Crystallization (Comment) Organism
puriifed recombinant tagged transposase catalytic domain SB100X, residues 114-340, by hanging drop vapour diffusion method, mixing of 0.002 ml of 19 mg/ml protein in 20 mM HEPES, pH 7.2, 50 mM NaCl, 2% v/v glycerol, 10 mM MgCl2, and 0.2 mM TCEP, with 0.002 ml of precipitant solution containing 0.1 M Na-citrate, pH 4.8, and 3.2 M ammonium sulfate, 4°C, 5 days, X-ray diffraction structure determination and analysis at 1.40 A resolution, PDB ID 3HOS Homo sapiens

Protein Variants

Protein Variants Comment Organism
E279D a catalytically inactive transposase mutant Homo sapiens
K339 site-directed mutagenesis, the mutant shows 20% reduced activity compared to the wild-type enzyme Homo sapiens
additional information design of two additional hyperactive transposase variants using the enzyme crystal structure, evaluation of structure-based engineering of tailored SB transposases, overview Homo sapiens
N280 site-directed mutagenesis, the mutant shows 50% reduced activity compared to the wild-type enzyme Homo sapiens
N280/K339 site-directed mutagenesis, almost catalytically inactive mutant Homo sapiens

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Purification (Commentary)

Purification (Comment) Organism
recombinant N-terminally thioredoxinA-6xHis-tagged wild-type and mutant enzymes from Escherichia coli strain RosettaII(DE3) by nickel affinity chromatography Homo sapiens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information Sleeping Beauty transposase excision activity is quantified using a fluorescence-activated cell sorting (FACS)-based excision assay in HeLa cells, overall SB transposition activity is also detected in HeLa cells Homo sapiens ?
-
?

Subunits

Subunits Comment Organism
More the SB100X catalytic domain assumes an RNaseH-fold with all catalytic residues assembled in the active site, it contains conserved alpha-helices and beta-strands, structure modeling of the SB transposase/transposon end/target DNA complex using crystal structure, PDB ID 3HOS, overview Homo sapiens

Synonyms

Synonyms Comment Organism
sleeping beauty transposase
-
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
7.2
-
assay at Homo sapiens

General Information

General Information Comment Organism
evolution Sleeping Beauty is a prominent Tc1/mariner superfamily DNA transposon, mobilized by a transposase enzyme that catalyses DNA cleavage and integration at short specific sequences at the transposon ends Homo sapiens
additional information modeling of the SB transposase/transposon end/target DNA complex, overview Homo sapiens