This Week in PNAS

In the current issue of PNAS, plant biologists show that SET7, a known histone methyltransferase, is involved in regulating the stability of DNA methyltransferase (DNMT1), which has a role in regulating cytosine DNA methylation in mammalian cells. SET7 interacts with DNMT1, they found, and overexpression of SET7 leads to decreased DNMT1 levels, while knockdown of SET7 stabilizes DNMT1.

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A new study in JAMA finds that genetic tests might not be able to determine what diet is right for someone seeking to lose weight.

A genome-wide association study that linked common genetic variants to salivary gland carcinoma risk has been retracted, according to Retraction Watch.

Vampire bats' ability to live off blood is etched in their genomes and gut microbiomes, the Scientist reports.

In Genome Biology this week: peopling of the Sahara, epigenetic reprogramming analysis of liverwort, and more.