The human ?2(IV) collagen gene, COL4A2, is syntenic with the ?1(IV) gene, COL4A1, on chromosome 13

Abstract
We have previously assigned the gene for the alpha 1 chain of type IV collagen to chromosome 13. In this report we show that the gene coding for the second chain of this heterotrimer is on the same chromosome. This is the first example of the genes for both chains of one collagen molecule being syntenic.