Discovering RNA modification enzymes using a comparative genomics approach.

Identifying RNA modification enzymes is critical for understanding the biogenesis and function of RNA modification. Among several approaches that enable the identification of RNA modification enzymes, comparative genomics has become particularly useful due to the expanding availability of genomic DNA and annotation data. Here, a detailed protocol for carrying out a computational comparative genomics approach for the discovery of RNA modification enzymes is presented. An illustrative example of the utility of this approach in the discovery of AcpA, an acetyltransferase that synthesizes the newly discovered modification, acacp3U is also provided. This computational framework has applications for the identification of genes involved in other cellular processes.