Words similar to triphosphatases
Example sentences for: triphosphatases
How can you use “triphosphatases” in a sentence? Here are some example sentences to help you improve your vocabulary:
This is not a straw-man issue, given that S. cerevisiae encodes two homologous RNA triphosphatases (Cet1 and Cth1), of which only Cet1 is essential for capping and cell viability [ 8 15 ] . We use classical genetic approaches to show that the respective genes encoding RNA triphosphatase and RNA guanylyltransferase are essential in S. pombe.
Analogous active sites, that coordinate two metal ions, are observed in domains with similar activities, such as the classical adenylyl/guanylyl cyclases, family B DNA polymerases, pol-β fold nucleotidyl transferases, and triphosphatases or phosphoesterases of the HD and DHH superfamilies [ 11 15 19 20 ] . Consistent with these observations, both CyaB and ThTPase have been shown to require Mg 2+ions for their nucleotide cyclase and phosphatase activities [ 16 17 ] .
Thus, we suspect that all fungal species will have metal-dependent RNA triphosphatases resembling those of S. cerevisiae, C. albicans and S. pombe.
To address these issues, we have characterized the RNA triphosphatases of two other fungi, including the human pathogen Candida albicans and the fission yeast Schizosaccharomyces pombe [ 10 11 12 ] . The fungal triphosphatases, S. cerevisiae Cet1, C. albicans CaCet1 and S. pombe Pct1, belong to a new family of metal-dependent phosphohydrolases that embraces the triphosphatase components of DNA virus and protozoan mRNA capping systems [ 1 7 13 14 ] . The defining features of the metal-dependent RNA triphosphatases are two glutamate-containing motifs that are required for catalysis and comprise the metal-binding site in the crystal structure of S. cerevisiae Cet1.
RNA triphosphatase is an attractive therapeutic target for fungal infections because: (i) the active site structure and catalytic mechanism of fungal RNA triphosphatase are completely different from the RNA triphosphatase domain of the metazoan capping enzyme and (ii) metazoans encode no identifiable homologs of the fungal RNA triphosphatases.
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