Remarkable conservation of structure among intermediate filament genes.

Journal Article (Journal Article)

Using a cloned cDNA complementary to a portion of the mRNA for the 50 kd human epidermal keratin, we have screened a human genomic library and have isolated and sequenced the gene encoding this keratin. A comparison of the keratin gene with the very distantly related vimentin gene has enabled us to explore the relation between the evolutionary conservation of structure in intermediate filament (IF) subunits and the conservation of structure in IF genes. Our results reveal that not only the secondary structure of the IF proteins, but also the structural skeleton of their genes, has been maintained throughout evolution. These characteristics have persisted despite considerable flexibility in both protein and nucleic acid sequence. Surprisingly, although the positions of the introns within these two genes are highly conserved, they do not seem to correspond to the boundaries of the structural domains common to all IF subunits.

Full Text

Duke Authors

Cited Authors

  • Marchuk, D; McCrohon, S; Fuchs, E

Published Date

  • December 1984

Published In

Volume / Issue

  • 39 / 3 Pt 2

Start / End Page

  • 491 - 498

PubMed ID

  • 6210150

International Standard Serial Number (ISSN)

  • 0092-8674

Digital Object Identifier (DOI)

  • 10.1016/0092-8674(84)90456-2


  • eng

Conference Location

  • United States