Presence of an N-terminal presequence in the PsaI protein of the Photosystem I complex in the filamentous cyanobacterium Anabaena variabilis ATCC 29413

Kintake Sonoike, Masahiko Ikeuchi, Himadri B. Pakrasi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The psaI gene encoding the 5.2 kDa protein component (PsaI) of the photosystem I complex was cloned from the cyanobacterium Anabaena 29413. The gene is present in single copy in this cyanobacterial genome. The nucleotide sequence of a 500 bp region of the cloned DNA revealed the presence of an open reading frame encoding a 46 amino acid long polypeptide. The N-terminal 11 residues are absent in the mature polypeptide and thus represents the first identified cleavable presequence on the PsaI protein. We suggest that this presequence directs the N-terminus of the protein to the thylakoid lumen.

Original languageEnglish
Pages (from-to)987-990
Number of pages4
JournalPlant Molecular Biology
Volume20
Issue number5
DOIs
Publication statusPublished - 1992 Dec
Externally publishedYes

Fingerprint

Anabaena variabilis
Photosystem I Protein Complex
photosystem I
Cyanobacteria
polypeptides
Genes
Anabaena
Peptides
Thylakoids
Proteins
Gene encoding
proteins
thylakoids
Open Reading Frames
open reading frames
genes
Nucleotides
Genome
nucleotide sequences
Amino Acids

Keywords

  • Anabaena
  • cyanobacteria
  • N-terminal processing
  • Photosystem I

ASJC Scopus subject areas

  • Biochemistry
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Presence of an N-terminal presequence in the PsaI protein of the Photosystem I complex in the filamentous cyanobacterium Anabaena variabilis ATCC 29413. / Sonoike, Kintake; Ikeuchi, Masahiko; Pakrasi, Himadri B.

In: Plant Molecular Biology, Vol. 20, No. 5, 12.1992, p. 987-990.

Research output: Contribution to journalArticle

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