Conservation of regulatory elements with highly diverged sequences across large evolutionary distances.

ABSTRACT: Developmental gene expression is a remarkably conserved process, yet most cis-regulatory elements (CREs) lack sequence conservation, especially at larger evolutionary distances. Some evidence suggests that CREs at the same genomic position remain functionally conserved independent of sequence conservation. However, the extent of such positional conservation remains unclear. Here, we profiled the regulatory genome in mouse and chicken embryonic hearts at equivalent developmental stages and found that most CREs lack sequence conservation. To identify positionally conserved CREs, we introduced the synteny-based algorithm interspecies point projection, which identifies up to fivefold more orthologs than alignment-based approaches. We termed positionally conserved orthologs 'indirectly conserve

SUBMITTER: Phan MHQ 

PROVIDER: S-EPMC12165850 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature