Immunogold Localization of Photosynthetic Fructose-1,6-Bisphosphatase in Pea Leaf Tissue
Author(s) -
R. Hermoso,
Ma Rosario de Felipe,
Antonio De Vivo,
Ana Chueca,
Juan J. Lázaro,
Julio López Gorgé
Publication year - 1989
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.89.1.381
Subject(s) - fructose 1,6 bisphosphatase , immunogold labelling , chloroplast , pisum , biochemistry , photosynthesis , cytoplasm , cytosol , biology , enzyme , fructose , biophysics , colloidal gold , chemistry , botany , ultrastructure , nanotechnology , nanoparticle , materials science , gene
An enriched IgG serum fraction obtained from rabbits immunized against pea chloroplast fructose-1,6-bisphosphatase (FBPase) was used, coupled to colloidal gold (15 nanometer particles) goat anti-rabbit IgG, to analyze by electron microscopy the location of photosynthetic FBPase in pea (Pisum sativum L.) leaf ultrathin sections. In accordance with earlier biochemical studies on distribution of FBPase activity, the enzyme was visualized both in the stromal space and bound to the chloroplast membranes. Some gold particles also appear in the cytoplasm, which can be related to the presence in the cytosol of a high molecular weight precursor of this nuclear coded enzyme.
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