Cloning and characterization of mitochondrial methionyl-tRNA synthetase from a pathogenic fungi Candida albicans

Sang Won Lee, Yeong Joon Jo, Sunghoon Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A genomic sequence encoding mitochondrial methionyl-tRNA synthetase (MetRS) was determined from a pathogenic fungi Candida albicans. The gene is distinct from that encoding the cytoplasmic MetRS. The encoded protein consists of 577 amino acids (aa and contains the class I defining sequences in the N-terminal domain and the conserved anticodon-binding amino acid, Trp, in the C-terminal domain. This protein showed the highest similarity with the mitochondrial MetRSs of Saccharomyces cerevisiae and Shizosaccharomyces pombe. The mitochondrial MetRSs of these fungi were distinguished from their cytoplasmic forms. The protein lacks the zinc binding motif in the N-terminal domain and the C-terminal dimerization appendix that are present in MetRSs of several other species. Escherichia coli tRNA(Met) was a substrate for the encoded protein as determined by genetic complementation and in vitro aminoacylation reaction. This cross-species aminoacylation activity suggests the conservation of interaction mode between tRNA(Met) and MetRS.

Original languageEnglish
Pages (from-to)311-318
Number of pages8
JournalGene
Volume215
Issue number2
DOIs
Publication statusPublished - 1998 Jul 30

Bibliographical note

Funding Information:
We wish to thank Drs S. Scherer and P.T. Magee for the kind gifts of the clones and Dr K. Manoharan for critical reading of the manuscript. This work was supported by grant 94-0403-20 from the Korea Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

  • Genetics

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