First Author | D'Esposito M | Year | 1991 |
Journal | Genomics | Volume | 10 |
Issue | 1 | Pages | 43-50 |
PubMed ID | 1675198 | Mgi Jnum | J:11241 |
Mgi Id | MGI:59680 | Doi | 10.1016/0888-7543(91)90482-t |
Citation | D'Esposito M, et al. (1991) EVX2, a human homeobox gene homologous to the even-skipped segmentation gene, is localized at the 5' end of HOX4 locus on chromosome 2. Genomics 10(1):43-50 |
abstractText | We isolated and mapped three new human homeoboxes located on chromosome 2 upstream from the reported seven HOX4 homeobox sequences. Two of them, HOX41 and HOX4H, clearly belong to the HOX gene family, in particular to homology groups 1 and 2, and possibly represent the most 5' HOX4 homeoboxes. A third homeobox 13 kb upstream from HOX41 was identified. Sequencing data show that this is the human homolog of the murine Evx-2 homeobox. Both homeoboxes are closely related to the murine Evx-1 and to the frog Xhox-3 homeoboxes. The four genes represent vertebrate homologs of Drosophila even-skipped (eve), a segmentation gene of the pair-rule class. Human EVX2 sequences belong to an active gene because they are transcribed and properly processed in cells and tissues. We have identified for the first time a homeogene of a different class at a HOX locus. These findings are relevant to the understanding of the evolution of HOX gene clusters and their regulation. |