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J. Biol. Chem., Vol. 263, Issue 36, 19274-19277, 12, 1988
P Kaytes, L Wood, N Theriault, M Kurkinen and G Vogeli
The genes for the two dissimilar subunits of type IV collagen are organized
in a head-to-head manner with their translation initiation codons within
874 base pairs. Murine genomic clones which contain portions of both genes
have been isolated and characterized. These clones contain the first exon
of the alpha 1(IV) chain and the first 3 exons for the alpha 2(IV) chain
within a 1.7-kilobase HindIII fragment. The intergenic region appears not
to resemble previously described bidirectional promoters. The HindIII
fragment is present as a single copy in the mouse genome ruling out the
presence of one of these gene fragments as a pseudogene. These findings
agree with linkage studies of these two genes and differ from the known
organization of human fibrillar collagen genes which have been found to be
dispersed within the human genome.
Head-to-head arrangement of murine type IV collagen genes
Molecular Biology Research, Upjohn Company, Kalamazoo, Michigan 49007.
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