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. 1992 Jan;98(1):24–33. doi: 10.1104/pp.98.1.24

Immunochemical Analysis of the Temporal and Tissue-Specific Expression of an Avena sativa Plasma Membrane Determinant 1

Michael A Lynes 1
PMCID: PMC1080145  PMID: 16668621

Abstract

An immunoglobulin Mk monoclonal (F8IVE9) antibody raised against oat (Avena sativa cv Garry) root homogenate has been produced and characterized. The predominant target bound by this antibody is a 62-kilodalton protein (p62) that is expressed in both oat root and oat shoot cells. Treatment of the oat antigen with periodate, or with recombinant N-glycanase, affects the F8IVE9 binding to the antigen, suggesting that the specific epitope for this monoclonal antibody involves a carbohydrate determinant. Levels of p62 present in cells of the oat root increase approximately twofold as the root tissue matures during the first 11 days postgermination. In contrast, levels of expression in shoot tissue remain relatively constant during the same period. The p62 antigen has been shown to be expressed at the plasma membrane by immunohistochemical means, by immunofluorescent labeling of protoplasts, and by enzyme-linked immunosorbent assay analysis of purified plasma membrane. The F8IVE9 antigenic target appears to be uniformly distributed through root tissue but is differentially expressed in specific sections of the shoot. F8IVE9 antibody also binds to antigens expressed in a number of other species, including clover, corn, pea, broccoli, mustard, and bean, and has been shown to bind to Samanea protoplast plasma membranes. This monoclonal antibody may prove to be useful for a variety of investigations, including an analysis of the specific patterns of cellular differentiation that occur during early morphogenesis, and the characterization of plasma membrane-associated elements in plants.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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