| Literature DB >> 2039502 |
M Nashimoto1, R Kominami, S Nishi, Y Mishima.
Abstract
We have found a novel spermidine-dependent endoribonuclease activity in mouse FM3A cell extracts. This endoribonuclease cleaves RNA substrates containing a sequence CCCCCGGUUUGU in its middle. This activity is lost either by heat- or micrococcal nuclease-pretreatment. When heat-pretreated extracts and micrococcal nuclease-pretreated ones are mixed, the activity is restored, suggesting that this activity requires both RNA and protein components. Testing the restoration of the lost endoribonuclease activity in micrococcal nuclease-pretreated extracts by addition of fractionated cellular RNAs, we identified an approximately 65 nucleotide RNA required for this endoribonuclease activity.Entities:
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Year: 1991 PMID: 2039502 DOI: 10.1016/0006-291x(91)90407-x
Source DB: PubMed Journal: Biochem Biophys Res Commun ISSN: 0006-291X Impact factor: 3.575