Results 141 to 150 of about 6,098 (159)
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Chloroplast p54 Endoribonuclease
2001Publisher Summary Much of the regulation of chloroplast gene expression has been assigned to stability determinants at the level of RNA precursors, including interactions of sequence and/or structural elements with their cognate binding proteins. A number of these proteins are known to assemble at the 5′-untranslated region (UTR) of chloroplast mRNAs,
Karsten Liere +2 more
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The Journal of Experimental Zoology, 1998
Leishmaniaviruses (LRV) are double-stranded RNA viruses that persistently infect some strains of the protozoan parasite Leishmania. The identification of a short viral RNA transcript led to our discovery of an endoribonuclease activity of the LRV capsid protein.
Jean L. Patterson, Kyle J. Macbeth
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Leishmaniaviruses (LRV) are double-stranded RNA viruses that persistently infect some strains of the protozoan parasite Leishmania. The identification of a short viral RNA transcript led to our discovery of an endoribonuclease activity of the LRV capsid protein.
Jean L. Patterson, Kyle J. Macbeth
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The role of endoribonucleases in the regulation of RNase R
Biochemical and Biophysical Research Communications, 2006RNase R is an important exoribonuclease involved in the maturation and degradation of RNA. RNase R is co-transcribed with other genes in the same operon. In this report, we show that under physiological conditions maturation of these co-transcripts and the levels of RNase R are mainly dependent on the endoribonuclease RNase E.
Cecília M. Arraiano, Fátima Cairrão
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Purification and characterization of a novel mammalian endoribonuclease
Journal of Cellular Biochemistry, 2005AbstractEndonuclease‐mediated mRNA decay appears to be a common mode of mRNA degradation in mammalian cells, but yet only a few mRNA endonucleases have been described. Here, we report the existence of a second mammalian endonuclease that is capable of cleaving c‐myc mRNA within the coding region in vitro.
Joel C. Urquhart +4 more
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A microsomal endoribonuclease from rat liver
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1980An endoribonuclease has been purified about 320-fold from the microsomes of rat liver. The enzyme had an apparent molecular weight of 54 000-58 000 and produced oligonucleotides, each consisting of 3-7 nucleotides from poly(A) and poly(U). No mononucleotide was obtained by the enzymatic hydrolysis of poly(A) and poly(U) under standard coditions.
Seiyu Hirose +5 more
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Endoribonuclease activities of Trypanosoma brucei mitochondria
Molecular and Biochemical Parasitology, 2002RNA editing in kinetoplastids is a type of post-transcriptional processing that changes mitochondrial mRNA sequences by the addition or deletion of uridines. Multiple enzymatic activities, such as endoribonuclease and RNA ligase, are associated with this process and exist in a multienzyme complex.
Barbara A. Morach +5 more
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RNA Recognition and Cleavage by Sequence-Specific Endoribonucleases
Protein & Peptide Letters, 2007Inactivation of RNA molecules by sequence-specific endoribonucleolytic cleavage is a subtle mechanism by which cells regulate gene expression. Sequence-specific endoribonucleases can recognize and cleave particular phosphodiester bonds confined within hundreds/thousands of chemically similar bonds.
Saida, F., Odaert, B.
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Bacteriophage T4 RegB Endoribonuclease
2001Publisher Summary The development of bacteriophage T4 is largely determined by a precisely coordinated subversion of the host RNA polymerase to permit initiation from different classes of T4-specific promoters. The synthesis, in cascade, of regulatory elements that modify the transcription apparatus, ensures the temporal ordering of the developmental
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Chapter 16 Staphylococcus aureus Endoribonuclease III
2008Staphylococcus aureus ribonuclease III (Sa-RNase III) belongs to the enzyme family known to process double-stranded RNAs consisting of two turns of the RNA helix. Although the enzyme is thought to play a role in ribosomal RNA processing and gene regulation, the deletion of the rnc gene in S. aureus does not affect cell growth in rich medium. S.
Sandrine Boisset +7 more
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Nucleotide binding architecture for secreted cytotoxic endoribonucleases
Biochimie, 2013Vertebrate secreted RNases are small cationic protein endowed with an endoribonuclease activity that belong to the RNase A superfamily and display diverse cytotoxic activities. In an effort to unravel their mechanism of action, we have analysed their nucleotide binding recognition patterns. General shared features with other nucleotide binding proteins
Mohammed Moussaoui +3 more
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