Plant Molecular Biology

, Volume 23, Issue 6, pp 1265–1272 | Cite as

Isolation and characterization of an Arabidopsis thaliana gene for the 54 kDa subunit of the signal recognition particle

  • Jon T. Lindstrom
  • Boyang Chu
  • Faith C. Belanger
Short Communication


The first step in the routing of newly synthesized proteins into the secretory pathway is the binding of the nascent signal sequence to the signal recognition particle. The mammalian signal recognition particle is a complex consisting of 6 proteins and a single 7S RNA molecule. Signal recognition particle-like complexes have been described from wheat and maize but none of the protein components have yet been described from any plant species. Here we report the cloning and characterization of an Arabidopsis thaliana gene encoding the 54 kDa protein subunit of the signal recognition particle. This is the first report of a SRP-54 sequence for any plant species and the first genomic sequence for any multicellular organism.

Key words

Arabidopsis thaliana signal recognition particle protein secretion 



endoplasmic reticulum


polymerase chain reaction


signal recognition particle


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Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Jon T. Lindstrom
    • 1
  • Boyang Chu
    • 1
  • Faith C. Belanger
    • 1
  1. 1.Plant Science Department, Lipman HallRutgers UniversityNew BrunswickUSA

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