Journal article
An3 protein encoded by a localized maternal mRNA in Xenopus laevis is an ATPase with substrate-specific RNA helicase activity
Biochimica et biophysica acta. Gene structure and expression, Vol.1350(2), pp.169-182
1997
DOI: 10.1016/S0167-4781(96)00155-8
PMID: 9048887
Abstract
ATP-dependent RNA helicases from the DEAD box family of proteins are involved in a number of RNA processing and utilization events. An3 protein from
Xenopus laevis is an RNA helicase of the DEAD box family of proteins. An3 is synthesized by a mRNA that is localized to one end of
Xenopus laevis oocytes. An3 protein is found in the nucleus of oocytes, and more specifically, during the middle stages of oocyte development, with extra nucleoli that contain amplified copies of rRNA genes in the nucleolus. By expressing glutathione-
S-transferase:An3 fusion proteins in
E. coli, sufficient amounts of An3 protein were isolated to examine its enzymatic activities. ATPase activity, NTP substrate range and RNA helicase activity were tested. An3 protein ATPase activity was evident but not stimulated by any of a variety of RNA tested. An3 protein was able to resolve the duplex formed by an in vitro substrate, in the presence of ATP or dATP. An3 required both 3′ and 5′ single-stranded regions of RNA flanking the RNA duplex it resolves.
Details
- Title: Subtitle
- An3 protein encoded by a localized maternal mRNA in Xenopus laevis is an ATPase with substrate-specific RNA helicase activity
- Creators
- Rajagopal GururajanDaniel L Weeks
- Resource Type
- Journal article
- Publication Details
- Biochimica et biophysica acta. Gene structure and expression, Vol.1350(2), pp.169-182
- DOI
- 10.1016/S0167-4781(96)00155-8
- PMID
- 9048887
- NLM abbreviation
- Biochim Biophys Acta
- ISSN
- 0167-4781
- eISSN
- 1879-2634
- Publisher
- Elsevier B.V
- Language
- English
- Date published
- 1997
- Academic Unit
- Stead Family Department of Pediatrics; Biochemistry and Molecular Biology
- Record Identifier
- 9984025393402771
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