| Literature DB >> 18176564 |
Axel Visel1, Shyam Prabhakar, Jennifer A Akiyama, Malak Shoukry, Keith D Lewis, Amy Holt, Ingrid Plajzer-Frick, Veena Afzal, Edward M Rubin, Len A Pennacchio.
Abstract
Extended perfect human-rodent sequence identity of at least 200 base pairs (ultraconservation) is potentially indicative of evolutionary or functional uniqueness. We used a transgenic mouse assay to compare the embryonic enhancer activity of 231 noncoding ultraconserved human genome regions with that of 206 extremely conserved regions lacking ultraconservation. Developmental enhancers were equally prevalent in both populations, suggesting instead that ultraconservation identifies a small, functionally indistinct subset of similarly constrained cis-regulatory elements.Entities:
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Year: 2008 PMID: 18176564 PMCID: PMC2647775 DOI: 10.1038/ng.2007.55
Source DB: PubMed Journal: Nat Genet ISSN: 1061-4036 Impact factor: 38.330