aTyr Pharma, Inc. develops protein therapeutics and novel class of biologic drugs. It plans to build a pipeline of therapeutic products based on Physiocrine biology. The company has established a dominant intellectual property estate to protect the core therapeutics as well as associated diagnostics. It operates in a single accounting segment. aTyr Pharma was founded by Paul Schimmel, Xiang-Lei Yang and Bruce Beutler on September 8, 2005 and is headquartered in San Diego, CA.