Example sentences for: placed

How can you use “placed” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • As in the first approach, the TAR vector contained a yeast centromere ( CEN6 ), a yeast ARS element ( ARSH4 ), a positive-selectable marker ( HIS3 ), and a negative-selectable marker ( URA3 ). In this approach, however, the targeting hooks are placed between the promoter and the open reading frame of the URA3 gene.

  • In contrast, 16S rDNA sequences allow bacteria to be placed in taxonomical groups.

  • --strong incentives to encourage highly placed officials to leak to him.

  • After the gross pathologic diagnosis was completed, the remaining portion of each tumor used in the present study was snap frozen in liquid nitrogen and placed in a freezer at -80°C until use.

  • The RDRPs of RNA viruses define one major lineage of nucleic acid polymerases, which additionally includes reverse transcriptases, archaeo-eukaryotic DNA polymerases, and nucleotide cyclases [ 8 9 10 11 12 13 ] . The DNA-dependent RNA polymerase of certain bacteriophages, such as T7, and the archaeo-eukaryotic primase (also detected in some bacteria) are divergent derivatives of the same fold [ 11 14 ] . The core catalytic domain of all these enzymes, the so-called "palm" domain, has an RNA-recognition motif (RRM)-like fold with strategically placed metal-coordinating residues, which form the active site [ 11 15 16 ] . In contrast, bacterial DnaG-type primases (also present in archaea and some eukaryotes) contain a polymerase domain of the Rossmann-like TOPRIM fold, which is shared with topoisomerases and OLD-family nucleases [ 17 18 19 ] . The recently solved structures of the DDRPs from yeast and the thermophilic bacterium Thermus thermophilus indicate that the β' subunit (according to the subunit nomenclature of Escherichia coli DDRP, which we hereinafter employ to designate all orthologs of the respective E. coli subunits) of these enzymes defines another distinct catalytic scaffold, which is unrelated to any of the above template-dependent RNA polymerases [ 20 21 22 23 24 ] . Additionally, the structural and evolutionary affinities of two other template-dependent RNA polymerases, namely RDRPs involved in PTGS [ 25 26 27 ] and primases of herpesviruses [ 28 ] , remain obscure.


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