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Synthesis of diadenosine 5',5'''-P1,P4-tetraphosphate by organellar and cytoplasmic phenylalanyl-tRNA synthetases of Euglena gracilis.

Authors
  • Krauspe, R
  • Parthier, B
  • Wasternack, C
Type
Published Article
Journal
FEBS Letters
Publisher
Wiley (John Wiley & Sons)
Publication Date
Aug 01, 1988
Volume
235
Issue
1-2
Pages
275–277
Identifiers
PMID: 3402601
Source
Medline
License
Unknown

Abstract

Purified phenylalanyl-tRNA synthetases present in chloroplasts, mitochondria and cytoplasm of green and bleached Euglena gracilis strains, respectively, are able to synthesize diadenosine 5',5'''-P1,P4-tetraphosphate (Ap4A). Ap4A synthesis is strictly dependent on zinc ions. This is the first evidence that chloroplasts should be able to synthesize Ap4A. Synthesis of Ap4A by phenylalanyl-tRNA synthetases of the three compartments of a plant cell or by other enzymes such as Ap4A phosphorylase is discussed.

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