The Database of Ribosomal Cross-links (DRC) was created in 1997. Here we de
scribe new data incorporated into this database and several new features of
the DRC. The DRC is freely available via World Wide Web at http://visitweb
.com/databasel or http://www.mpimg-berIin-dahlem.mpg.de/similar to ag _ rib
o/ag_brimacombe/drc/.