PUBLICATION
Homez, a homeobox leucine zipper gene specific to the vertebrate lineage
- Authors
- Bayarsaihan, D., Enkhmandakh, B., Makeyev, A., Greally, J.M., Leckman, J.F., and Ruddle, F.H.
- ID
- ZDB-PUB-030826-12
- Date
- 2003
- Source
- Proceedings of the National Academy of Sciences of the United States of America 100(18): 10358-10363 (Journal)
- Registered Authors
- Ruddle, Frank H.
- Keywords
- none
- MeSH Terms
-
- Alternative Splicing
- Amino Acid Sequence
- Animals
- DNA/metabolism
- DNA, Complementary/isolation & purification
- Dimerization
- Evolution, Molecular
- Genes, Homeobox*
- Homeodomain Proteins/chemistry
- Homeodomain Proteins/metabolism
- Humans
- Leucine Zippers*
- Mice
- Molecular Sequence Data
- Rats
- PubMed
- 12925734 Full text @ Proc. Natl. Acad. Sci. USA
Citation
Bayarsaihan, D., Enkhmandakh, B., Makeyev, A., Greally, J.M., Leckman, J.F., and Ruddle, F.H. (2003) Homez, a homeobox leucine zipper gene specific to the vertebrate lineage. Proceedings of the National Academy of Sciences of the United States of America. 100(18):10358-10363.
Abstract
This work describes a vertebrate homeobox gene, designated Homez (homeodomain leucine zipper-encoding gene), that encodes a protein with an unusual structural organization. There are several regions within Homez, including three atypical homeodomains, two leucine zipper-like motifs, and an acidic domain. The gene is ubiquitously expressed in human and murine tissues, although the expression pattern is more restricted during mouse development. Genomic analysis revealed that human and mouse genes are located at 14q11.2 and 14C, respectively, and are composed of two exons. The zebrafish and pufferfish homologs share high similarity to mammalian sequences, particularly within the homeodomain sequences. Based on homology of homeodomains and on the similarity in overall protein structure, we deliniate Homez and members of ZHX family of zinc finger homeodomain factors as a subset within the superfamily of homeobox-containing proteins. The type and composition of homeodomains in the Homez subfamily are vertebrate-specific. Phylogenetic analysis indicates that Homez lineage was separated from related genes >400 million years ago before separation of ray- and lobe-finned fishes. We apply a duplication-degeneration-complementation model to explain how this family of genes has evolved.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping