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Structural organization of the mouse glycophorin A gene.

Authors
  • Terajima, M
  • Matsui, Y
  • Copeland, N G
  • Gilbert, D J
  • Jenkins, N A
  • Obinata, M
Type
Published Article
Journal
Journal of biochemistry
Publication Date
Nov 01, 1994
Volume
116
Issue
5
Pages
1105–1110
Identifiers
PMID: 7896738
Source
Medline
License
Unknown

Abstract

The human glycophorin gene has been extensively studied, but information on the homologous gene from other species has been unavailable. Here, we determined the structural organization of mouse glycophorin A gene and compared it with the human gene. The mouse glycophorin gene is a single copy gene while in humans, there are two highly related genes (A and B) that were generated by homologous recombination. Chromosomal mapping indicated that the mouse gene is located in the central region of the mouse chromosome 8, which is syntenic with human chromosomes 4q28-31 where the human glycophorin A gene has been mapped. The mouse gene consists of 8 exons, while the human gene consists of 7 exons and the length of each exon is quite short except for the last exon. The last 4 exons showed extensive homology between the mouse and human genes but divergence in the 5'-exons of the two genes was high. The results suggest that glycophorin genes of mouse and human may have been generated from the same ancestor, but diverged greatly during evolution. The upstream regulatory region of the mouse gene consists of multiple motifs for DNA binding factors that may be required for its erythroid-specific expression.

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