The amphioxus Hox cluster : deuterostome posterior flexibility and Hox14.

David Ellard Keith Ferrier, C. Minguillón, P.W.H. Holland, J. Garcia-Fernàndez

Research output: Contribution to journalArticlepeer-review

140 Citations (Scopus)

Abstract

The amphioxus (Branchiostoma floridae) Hox cluster is a model for the ancestral vertebrate cluster, prior to the hypothesized genome-wide duplications that may have facilitated the evolution of the vertebrate body plan. Here we describe the posterior (5') genes of the amphioxus cluster, and report the isolation of four new homeobox genes. Vertebrates possess 13 types of Hox gene (paralogy groups), but we show that amphioxus possesses more than 13 Hox genes. Amphioxus is now the first animal in which a Hox14 gene has been found. Our mapping and phylogenetic analysis of amphioxus "Posterior Class" Hox genes reveals that these genes are evolving at a faster rate in deuterostomes than in protostomes, a phenomenon we term Posterior Flexibility.

Original languageEnglish
Pages (from-to)284-293
Number of pages10
JournalEvolution and Development
Volume2
DOIs
Publication statusPublished - Sept 2000

Keywords

  • HOMEOBOX GENES
  • HOMEOTIC GENE
  • EVOLUTION
  • ORGANIZATION
  • EXPRESSION

Fingerprint

Dive into the research topics of 'The amphioxus Hox cluster : deuterostome posterior flexibility and Hox14.'. Together they form a unique fingerprint.

Cite this