6690bp genomic fragment containing the 5' common exons 1-4 of mod(mdg4) (contains sequence extending from the first exon of the upstream tin gene through to nucleotide 1564 of mod(mdg4) intron 4).
mod(mdg4)5'common.WT partially rescues mod(mdg4)Δcom
Expression of mod(mdg4)5'common.WT partially rescues the lethality of mod(mdg4)Δcom/mod(mdg4)Δcom.