| RHA | RNA helicase A |
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| 89B helicase | <enzyme> Snf2-like protein that binds to multiple sites on polytene chromosomes; isolated from drosophila melanogaster; partial Registry number: EC 5.99.- (26 Jun 1999) |
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| p68 RNA helicase | <enzyme> An RNA helicase isolated from uv-induced tumours in mice; amino acid sequence has been determined Registry number: EC 2.7.7.- Synonym: dead box helicase p68 (26 Jun 1999) |
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| Rad3 ATPase-DNA helicase | <enzyme> Can unwind duplex regions as short as 11 base pairs in a partially duplex circular DNA substrate; on partially duplex linear substrates, the enzyme has a strict 5'--3' polarity with respect to the single strand to which it binds; nicked circular DNA is not utilised; from saccharomyces cerevisiae Registry number: EC 3.6.1.- Synonym: rad3 protein (26 Jun 1999) |
| matrix-associated helicase | <enzyme> Component of the pre-mRNA splicing complex; has atpase activity and DNA helicase activity on a partially double-stranded DNA substrate in the 3'-5' direction Registry number: EC 2.7.7.- Synonym: helicase mah (26 Jun 1999) |
| RepB helicase | <enzyme> Member of the sf2 superfamily of helicases; homologous to rad25/xpb; isolated from dictyostelium discoideum; do not confuse with repb protein; genbank u77065 Registry number: EC 3.1.- Synonym: DNA helicase repb (26 Jun 1999) |
| RepD helicase | <enzyme> Member of the sf2 superfamily of nucleases; homologous to rad3/xpd; isolated from dictyostelium discoideum; do not confuse with repd protein; genbank u77066 Registry number: EC 3.1.- Synonym: DNA helicase repd (26 Jun 1999) |
| RNA helicase | <enzyme> Nuclear envelope-associated RNA helicase activity in nucleocytoplasmic RNA transport; both glh-1 and glh-2 contain cchc-type zinc fingers; xp54 is xenopus homologue of human RNA helicase p54 Registry number: EC 2.7.7.- Synonym: RNA duplex unwindase, p54 gene product, bat1 gene product, RNA helicase a, rok1 protein, human RNA helicase 1, hrh1 protein, mrdb protein, glh-1 protein, glh-2 protein, RNA helicase p54, xp54, u5 snrnp-specific 100-kD protein (26 Jun 1999) |
| helicase | <enzyme, molecular biology> A prokaryote enzyme that uses the hydrolysis of ATP to unwind the DNA helix at the replication fork, to allow the resulting single strands to be copied. Two molecules of ATP are required for each nucleotide pair of the duplex. (18 Nov 1997) |
| herpes simplex virus 1 helicase-primase | <enzyme> Complex of three herpes-encoded gene products (ul52, ul5, and ul8) in addition to helicase activity, contains a tightly associated complex that may prime lagging strand synthesis as it unwinds DNA at the viral replication fork Registry number: EC 3.1.- Synonym: hsv-1 helicase-primase, ul5 protein, hsv helicase-primase complex, ul52 protein, ul8 protein (26 Jun 1999) |
| DEAD box helicase | <enzyme> Family of ATP dependent DNA or RNA helicases with a 4 amino acid consensus, D E A D, that resembles an ATP binding site. Examples, p68, a human nuclear protein involved in cell growth, vasa, a Drosophila protein required for specification of posterior embryonic structures. (18 Nov 1997) |
| DnaB helicase | <enzyme> Dnac delivers the dnab helicase from a dnab.dnac complex to the future replication fork; isolated from E coli Registry number: EC 3.1.- (26 Jun 1999) |
| DNA delta-helicase | <enzyme> From foetal calf thymus; partially copurifies with DNA polymerase delta; also has DNA-dependent atpase activity Registry number: EC 3.6.1.- (26 Jun 1999) |
| DNA helicase | <enzyme, molecular biology> A prokaryote enzyme that uses the hydrolysis of ATP to unwind the DNA helix at the replication fork, to allow the resulting single strands to be copied. Two molecules of ATP are required for each nucleotide pair of the duplex. (18 Nov 1997) |
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