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    Genomics. 1992 Apr;12(4):632-8.

    Physical linkage of the A-raf-1, properdin, synapsin I, and TIMP genes on the human and mouse X chromosomes.

    Source

    MRC Molecular Neurobiology Unit, MRC Centre, Cambridge, United Kingdom.

    Abstract

    Genes encoding the neuron-specific phosphoprotein synapsin I (SYN1), the glycoprotein tissue inhibitor of metalloproteinases (TIMP), the proto-oncogene A-raf-1 (ARAF1), and properdin (PFC), a positive regulator of the alternative pathway of human complement, lie within a conserved synteny encompassing the proximal short arm of the human X chromosome (Xp21.1-p11) and the centromeric end of the mouse X chromosome (A1-A5). We have used a mouse interspecific cross to demonstrate genetic linkage of Syn-1, Timp, and Araf and also show physical linkage, with Timp lying only 10 kb from Araf, within an intron of the Syn-1 gene. Detailed restriction mapping shows that Timp is transcribed in the same direction as Araf but in the opposite direction to the Syn-1 gene. Analysis of the corresponding region of the human X chromosome indicates a similar arrangement and in addition shows that the properdin gene lies within 5 kb of the 5' end of the synapsin I gene.

    PMID:
    1572636
    [PubMed - indexed for MEDLINE]

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