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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Divergent structure of the human synexin (annexin VII) gene and assignment to chromosome 10.

The human synexin (annexin VII) gene occurs as a single copy at chromosome 10q21.1-21.2 and substantially deviates in size and in the location of splice junctions from the other two well-characterized members of the annexin gene family, lipocortin I (annexin I) and calpactin I (annexin II). The synexin gene contains 14 exons, including an alternatively spliced cassette exon, and spans approximately 34 kb of DNA. Only five of the fourteen splice junctions are conserved compared to other annexins, and the differences are particularly pronounced in the exons that encode the C-terminal third and fourth conserved repeats in the gene product. Although parallels between exons and protein domains were not apparent, we did observe clustering of splice junctions corresponding to either the unique N-terminal domain or the conserved C-terminal tetrad repeat domain, which is common to all annexins. Furthermore, a complete analysis of the 5' flanking region of the annexin VII gene revealed an entirely different set of cis-acting and enhancer elements compared to other annexin genes. We conclude that the annexin VII gene may have arisen by a divergence from the evolutionary pathway taken by both annexins I and II.[1]

References

  1. Divergent structure of the human synexin (annexin VII) gene and assignment to chromosome 10. Shirvan, A., Srivastava, M., Wang, M.G., Cultraro, C., Magendzo, K., McBride, O.W., Pollard, H.B., Burns, A.L. Biochemistry (1994) [Pubmed]
 
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