Primate involucrins: antigenic relatedness and detection of multiple forms.

N. L. Parenteau, R. L. Eckert, R. H. Rice

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Hominoid apes (gorilla, chimpanzee, orangutan, gibbon), Old World monkeys (rhesus, cynomolgus), New World monkeys (owl, cebus), and a prosimian (lemur) express involucrin-like proteins in cultured keratinocytes. Primate involucrins can be precipitated with trichloroacetic acid, resolubilized at pH 8, and subsequently retain aqueous solubility in 67% ethanol. Polyacrylamide gel electrophoresis of keratinocyte extracts after this rapid partial purification has revealed in each species tested one (chimpanzee, orangutan, gibbon) or two (gorilla, rhesus, owl, cebus) antigenically crossreactive proteins that migrate in the vicinity of human involucrin. In the species examined further (gorilla, chimpanzee, rhesus), poly(A)+ mRNA isolated from the cultures directed the cell-free translation of polypeptides with mobilities similar to those extracted from the cells. From five cynomolgus monkeys, three different electrophoretic profiles were obtained, suggesting the existence of different alleles. Quantitative comparisons by a sensitive enzyme-linked immunosorbent assay indicated that certain primate involucrins have a higher density of antigenic determinants than the human protein, whereas others lack some determinant(s). In contrast to those from other species, all of which showed substantial crossreactivity, the lemur protein was minimally immunoreactive by immunoblotting and not clearly detected by solid-phase assay. The electrophoretic and antigenic differences displayed throughout the primate order suggest that this protein has been subject to relatively rapid evolution.

Original languageEnglish (US)
Pages (from-to)7571-7575
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume84
Issue number21
StatePublished - Nov 1987
Externally publishedYes

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Primates
Gorilla gorilla
Pan troglodytes
Lemur
Pongo
Cebus
Hylobates
Strigiformes
Proteins
Keratinocytes
Strepsirhini
Platyrrhini
Cercopithecidae
Trichloroacetic Acid
Macaca fascicularis
Hominidae
Immunoblotting
Solubility
Epitopes
Polyacrylamide Gel Electrophoresis

ASJC Scopus subject areas

  • General
  • Genetics

Cite this

Primate involucrins : antigenic relatedness and detection of multiple forms. / Parenteau, N. L.; Eckert, R. L.; Rice, R. H.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 84, No. 21, 11.1987, p. 7571-7575.

Research output: Contribution to journalArticle

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