Structure of phenylalanyl-tRNA synthetase from Thermus Thermophilus

Lidia Mosyak, Ludmila Reshetnikova, Yehuda Goldgur, Mark G. Safro

Research output: Contribution to journalArticlepeer-review

154 Scopus citations


The crystal structure of phenylalanyl-tRNA synthetase from Thermus thermophilus, solved at 2.9 Å resolution, displays (αβ)2 subunit organization. Unexpectedly, both the catalytic α- and the non-catalytic β-subunits comprise the characteristic fold of the class II active-site domains. The αβ heterodimer contains most of the building blocks so far identified in the class II synthetases. The presence of an RNA-binding domain, similiar to that of the U1A spliceosomal protein, in the β-subunit is indicative of structural relationships among different families of RNA-binding proteins. The structure suggests a plausible catalytic mechanism which explains why the primary site of tRNA aminoacylation is different from that of the other class II enzymes.

Original languageEnglish
Pages (from-to)537-547
Number of pages11
JournalNature Structural Biology
Issue number7
StatePublished - 1 Jan 1995
Externally publishedYes

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Genetics


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