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

Identification, chromosomal assignment, and expression analysis of the human homeodomain-containing gene Orthopedia ( OTP).

Homeodomain (HD) genes are helix-turn-helix transcription factors that play key roles in the specification of cell fates. In the central nervous system (CNS), HD genes not only position cells along an axis, but also specify cell migration patterns and may influence axonal connectivity. In an effort to identify novel HD genes involved in the development of the human CNS, we have cloned, characterized, and mapped the human homologue of the murine HD gene Orthopedia ( Otp), whose product is found in multiple cell groups within the mouse hypothalamus, amygdala, and brain stem. Human cDNA and genomic libraries were screened with probes derived from mouse Otp sequences to find the human homologue, OTP. The deduced amino acid sequence of the open reading frame of the human cDNA is 99% homologous to mouse Otp and demonstrates a high degree of conservation when compared to sea urchin and Drosophila. OTP was mapped to human chromosome 5q13.3 using radiation hybrid panel mapping and fluorescence in situ hybridization. Flanking markers were identified from YAC clones containing OTP. A single putative OTP gene product was found in 17-week human fetal brain tissue by Western blot analysis using a novel polyclonal antibody raised against a conserved 13-amino-acid sequence at the C-terminus of the OTP protein. Expression in the developing human hypothalamus was confirmed by immunohistochemistry.[1]

References

  1. Identification, chromosomal assignment, and expression analysis of the human homeodomain-containing gene Orthopedia (OTP). Lin, X., State, M.W., Vaccarino, F.M., Greally, J., Hass, M., Leckman, J.F. Genomics (1999) [Pubmed]
 
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