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Cell. 1985 Nov;43(1):29-37.

Expression during embryogenesis of a mouse gene with sequence homology to the Drosophila engrailed gene.


Regions of the mouse and human genomes with strong homology to the Drosophila engrailed gene have been identified by Southern blot analysis. One mouse engrailed-like region, Mo-en.1, has been cloned and partially sequenced; homology with the engrailed gene is localized to a 180 bp engrailed-like homeo box and 63 nucleotides immediately 3' to it. The protein sequence this region can encode includes 81 amino acids, of which 60 (75%) are identical with those of the putative translation product of the corresponding engrailed sequence. These data suggest that Mo-en.1 represents a mouse homolog of a gene of the Drosophila engrailed gene complex. Mo-en.1 has been mapped to chromosome 1, indicating it is not linked to other homeo box sequences that have been mapped in the mouse genome. Analysis of poly(A)+ RNA extracted from teratocarcinoma cells and whole mouse embryos demonstrates that the conserved homeo box region of Mo-en.1 is expressed differentially during mouse embryogenesis.

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