ISSN:
1432-2048
Keywords:
Cucumis
;
Glycollate oxidase
;
Microbody
;
Peroxisome
;
Protein synthesis
;
Translation (cell free)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Earlier work on microbody biosynthesis has shown that glyoxysomal and liver peroxisomal proteins synthesized in the cytosol are made as precursors which are then transferred into the organelles and processed. Here, it is demonstrated that the unprecessed precursor detected in the cytosol after protein synthesis in vivo for an enzyme at the transition stage between glyoxysomes and leaf peroxisomes is indistinguishable from the product of translation in vitro. It is assumed that the transfer of extraorganellarly made precursor across the glyoxysomal membranes is followed by processing of the precursor and oligomerization to the tetrameric or 16-meric form of the enzyme. Oligomerization was, however, also observed in a portion of the cytosolic form.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00392783
