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    Genomics. 1992 Jun;13(2):251-6.

    Small eye (Sey): cloning and characterization of the murine homolog of the human aniridia gene.

    Source

    Department of Biochemistry and Molecular Biology, University of Texas M. D. Anderson Cancer Center, Houston 77030.

    Abstract

    Phenotypic parallels and genetic evidence from comparative mapping suggest that the murine Small eye (Sey) and human aniridia (AN) disorders are homologous. This report describes the isolation of a murine embryonic cDNA that is structurally homologous to the AN cDNA were recently cloned. The murine cDNA detects a 2.7-kb transcript in the adult mouse eye and cerebellum and in human glioblastomas, suggesting a neuroectodermal involvement in the etiology of Sey/AN. Sequence comparison between the murine and the human cDNAs revealed extensive homology in nucleotide sequence (greater than 92%) and virtual identity at the amino acid level. None of the differing amino acids was located within the paired box and homeobox DNA-binding domains. These results provide evidence for a common molecular basis underlying the two genetic disorders and suggest that the Sey system would be an authentic model for human AN.

    PMID:
    1612585
    [PubMed - indexed for MEDLINE]

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