Trans-species polymorphism in humans and the great apes is generally maintained by balancing selection that modulates the host immune response.

ABSTRACT: Known examples of ancient identical-by-descent genetic variants being shared between evolutionarily related species, known as trans-species polymorphisms (TSPs), result from counterbalancing selective forces acting on target genes to confer resistance against infectious agents. To date, putative TSPs between humans and other primate species have been identified for the highly polymorphic major histocompatibility complex (MHC), the histo-blood ABO group, two antiviral genes (ZC3HAV1 and TRIM5), an autoimmunity-related gene LAD1 and several non-coding genomic segments with a putative regulatory role. Although the number of well-characterized TSPs under long-term balancing selection is still very small, these examples are connected by a common thread, namely that they involve genes with key r

SUBMITTER: Azevedo L 

PROVIDER: S-EPMC4559023 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature