NEW YORK, March 1 - Bioinformatics company Metaphorics has struck a  research collaboration with drug-discovery firm Syrrx designed to improve computational tools for docking ligand molecule structures into protein binding sites.

The companies said on Thursday that the collaboration seeks to create new software that might help scientists better predict "the potential complementarity" between ligands and proteins.

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Senator Elizabeth Warren (D-Mass.) has released the results of a genetic ancestry analysis, the Boston Globe reports.

Retraction Watch's Ivan Oransky and Adam Marcus report that Harvard Medical School and Brigham and Women's Hospital have recommended that more than 30 papers from a former researcher be retracted.

Thomas Steitz, who won the 2009 chemistry Nobel Prize for his ribosome work, has died, the Washington Post reports.

In PLOS this week: mechanisms for genes implicated in coronary artery disease, rumen microbes and host genetics influence cow methane production, and more.