| http://purl.uniprot.org/citations/10933810 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/10933810 | http://www.w3.org/2000/01/rdf-schema#comment | "Eukaryotic transfer RNA precursors (pre-tRNAs) contain a 5' leader preceding the aminoacyl acceptor stem and a 3' trailer extending beyond this stem. An early step in pre-tRNA maturation is removal of the 5' leader by the endoribonuclease, RNase P. Extensive pairing between leader and trailer sequences has previously been demonstrated to block RNase P cleavage, suggesting that the 5' leader and 3' trailer sequences might need to be separated for the substrate to be recognized by the eukaryotic holoenzyme. To address whether the nuclear RNase P holoenzyme recognizes the 5' leader and 3' trailer sequences independently, interactions of RNase P with pre-tRNA(Tyr) containing either the 5' leader, the 3' trailer, or both were examined. Kinetic analysis revealed little effect of the 3' trailer or a long 5' leader on the catalytic rate (k(cat)) for cleavage using the various pre-tRNA derivatives. However, the presence of a 3' trailer that pairs with the 5' leader increases the K(m) of pre-tRNA slightly, in agreement with previous results. Similarly, competition studies demonstrate that removal of a complementary 3' trailer lowers the apparent K(I), consistent with the structure between these two sequences interfering with their interaction with the enzyme. Deletion of both the 5' and 3' extensions to give mature termini resulted in the least effective competitor. Further studies showed that the nuclear holoenzyme, but not the B. subtilis holoenzyme, had a high affinity for single-stranded RNA in the absence of attached tRNA structure. The data suggest that yeast nuclear RNase P contains a minimum of two binding sites involved in substrate recognition, one that interacts with tRNA and one that interacts with the 3' trailer. Furthermore, base pairing between the 5' leader and 3' trailer hinders recognition."xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.org/dc/terms/identifier | "doi:10.1021/bi000603n"xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/author | "Fierke C.A."xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/author | "Engelke D.R."xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/author | "Day J.J."xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/author | "Ziehler W.A."xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/date | "2000"xsd:gYear |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/name | "Biochemistry"xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/pages | "9909-9916"xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/title | "Effects of 5' leader and 3' trailer structures on pre-tRNA processing by nuclear RNase P."xsd:string |
| http://purl.uniprot.org/citations/10933810 | http://purl.uniprot.org/core/volume | "39"xsd:string |
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