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Literature summary for 5.6.2.3 extracted from

  • Xiangyang, L.; Antero, G.; Kathleen, M.; Tan, C.
    Purification and characterization of delta helicase from fetal calf thymus (1992), Biochemistry, 31, 3507-3513 .
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
additional information double-stranded pBR.322 DNA is not inhibitory Bos taurus
single-stranded Ml3 DNA
-
Bos taurus

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ 3 mM used in assay conditions Bos taurus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
57000
-
gel filtration Bos taurus

Organism

Organism UniProt Comment Textmining
Bos taurus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
heparin-agarose column chromatography, and single-stranded DNA-agarose column chromatography Bos taurus

Source Tissue

Source Tissue Comment Organism Textmining
thymus
-
Bos taurus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information the enzyme binds to single-stranded DNA but has little or no affinity for double-stranded DNA or single-stranded RNA. The enzyme translocates in the 5'-3' direction along the strand to which it is bound and preferentially unwinds DNA substrates with a forklike structure. The enzyme also has DNA-dependent ATPase activity which has a relatively low Km for ATP (0.04 mM) Bos taurus ?
-
-
partial duplex of M13 single-stranded DNA, 50-mer, 3'-tailed
-
Bos taurus ?
-
?

Synonyms

Synonyms Comment Organism
delta helicase
-
Bos taurus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5
-
-
Bos taurus

Cofactor

Cofactor Comment Organism Structure
ATP
-
Bos taurus
dATP
-
Bos taurus
additional information unwinding of a partial duplex requires a nucleoside triphosphate which can be either ATP or dATP but not a nonhydrolyzable analogue of ATP. Other ribo- and deoxyribonucleoside triphosphates have little or no activity as cofactors Bos taurus