rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
1998-7-20
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pubmed:abstractText |
Human mitochondrial RNase P does not distinguish itself from other RNase P enzymes by most of its basic properties. 5' phosphates on tRNA products, strict dependence on a divalent cation, independence of ATP or other cofactors, and sensitivity to puromycin are generally characteristic for RNase P. Slow sedimentation of human mitochondrial RNase P in glycerol gradients suggests a molecular weight considerably lower than that of bacterial or nuclear RNase P. In contrast to fungi, all putative components of mammalian mitochondrial RNase P are encoded by the nucleus. Intriguingly, no indication of the involvement of a trans-acting RNA was found in mammalian mitochondrial tRNA processing. Mitochondrial RNase P is resistant to rigorous treatments with nucleases and exhibits a protein-like density in Cs2SO4 gradients. Moreover, an analysis of copurifying RNAs revealed no putative RNase P RNA candidates. These data suggest that mammalian mitochondrial RNase P, unlike its nuclear counterpart or its bacterial relatives, is not a ribonucleoprotein but a protein enzyme.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/DNA, Mitochondrial,
http://linkedlifedata.com/resource/pubmed/chemical/Endoribonucleases,
http://linkedlifedata.com/resource/pubmed/chemical/Escherichia coli Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/RNA,
http://linkedlifedata.com/resource/pubmed/chemical/RNA, Catalytic,
http://linkedlifedata.com/resource/pubmed/chemical/RNA, Transfer,
http://linkedlifedata.com/resource/pubmed/chemical/RPP14 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Ribonuclease P,
http://linkedlifedata.com/resource/pubmed/chemical/Ribonucleoproteins,
http://linkedlifedata.com/resource/pubmed/chemical/ribonuclease P, E coli
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pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0006-291X
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pubmed:author |
|
pubmed:copyrightInfo |
Copyright 1998 Academic Press.
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pubmed:issnType |
Print
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pubmed:day |
18
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pubmed:volume |
247
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
234-41
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:9642109-Biophysical Phenomena,
pubmed-meshheading:9642109-Biophysics,
pubmed-meshheading:9642109-Cell Nucleus,
pubmed-meshheading:9642109-DNA, Mitochondrial,
pubmed-meshheading:9642109-Endoribonucleases,
pubmed-meshheading:9642109-Escherichia coli,
pubmed-meshheading:9642109-Escherichia coli Proteins,
pubmed-meshheading:9642109-HeLa Cells,
pubmed-meshheading:9642109-Humans,
pubmed-meshheading:9642109-Mitochondria,
pubmed-meshheading:9642109-Nucleic Acid Conformation,
pubmed-meshheading:9642109-RNA,
pubmed-meshheading:9642109-RNA, Catalytic,
pubmed-meshheading:9642109-RNA, Transfer,
pubmed-meshheading:9642109-RNA Processing, Post-Transcriptional,
pubmed-meshheading:9642109-Ribonuclease P,
pubmed-meshheading:9642109-Ribonucleoproteins
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pubmed:year |
1998
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pubmed:articleTitle |
Characterization of human mitochondrial RNase P: novel aspects in tRNA processing.
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pubmed:affiliation |
Institut für Tumorbiologie-Krebsforschung der Universität Wien, Borschkegasse 8a, Vienna, A-1090, Austria. walter.rossmanith@univie.ac.at
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pubmed:publicationType |
Journal Article,
Comparative Study
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