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Literature summary for 5.6.2.3 extracted from

  • Thoemmes, P.; Marton, R.F.; Cotterill, S.
    Isolation and characterisation of dhel II, a DNA helicase from Drosophila melanogaster embryos stimulated by Escherichia coli-type single-stranded-DNA-binding proteins (1996), Eur. J. Biochem., 235, 152-158 .
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
mitochondria1 single-stranded DNA-binding protein the addition of Escherichia coli-like single-stranded DNA-binding proteins, in particular the mitochondria1 single-stranded DNA-binding protein, stimulates the unwinding activity of the helicase at least 10fold on substrates greater than 200 nucleotides Drosophila melanogaster

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ 1 mM used in assay conditions Drosophila melanogaster

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
120000
-
gel filtration Drosophila melanogaster

Organism

Organism UniProt Comment Textmining
Drosophila melanogaster
-
-
-

Purification (Commentary)

Purification (Comment) Organism
MonoQ column chromatography and MonoS column chromatography Drosophila melanogaster

Source Tissue

Source Tissue Comment Organism Textmining
embryo
-
Drosophila melanogaster
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
61-nucleotide DNA
-
Drosophila melanogaster ?
-
?
additional information the helicase unwinds DNA 5' to 3'and has a preference for purine triphosphates as cofactors for the unwinding reaction (GTP/dGTP are better substrates than ATP/dATP. CTP/dCTP support the reaction at higher concentrations, while UTP and dTTP can hardly be utilised at all) Drosophila melanogaster ?
-
-

Subunits

Subunits Comment Organism
monomer 1 * 120000, SDS-PAGE Drosophila melanogaster

Synonyms

Synonyms Comment Organism
dhel 11
-
Drosophila melanogaster