Research on the marsupial genome promises to reveal unparalleled insights into mammalian evolution
The genetic code of marsupials has now been documented for the first time. An international team led by Kathy Belov from the University of Sydney’s Faculty of Veterinary Science published an analysis of the marsupial genome in the open access journal PLoS Biology. The paper details the evolution of an important cluster of immune genes known as the MHC using available genome sequences of the gray, short-tailed opossum (Monodelphis domestica), a marsupial found in South America.
“Mapping the opossum MHC has allowed us to deduce what the MHC of ancestral mammals looked like,” says Belov. "We think it contained several different types of immune genes in a single complex. These genes are no longer found in a single complex in any living animal but are scattered over various chromosomes. We have named this complex ‘The Immune Supercomplex.’”
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