Region N4 enhancer of ceh-13/lin-39 expressed in embryo, ventral midbody /expressed in L1, V6. It is possible that this is actually a promoter region as it lies at the start of the Transcript object for lin-39.
This is a a 4,593 base region of exact match to E. coli on C. elegans chromosome X. The edges match the IS10 insertion sequence of the transposon Tn10. Genomic short-read sequences do not match to this region. It is likely that a transposon insertion event ocurred while the clone was being grown and prepared for sequencing. It is less likely that a horizontal gene transfer has occured into living C. elegans organisms at some time in the past.