Database of protein subcellular localizations for bacteria and archaea, determined through laboratory experimentation and computational predictions.

Archaeal Browser

A “window” on the biology of more than 100 microbial species from the domain Archaea.


Model-organism database for the bacterium Bacillus subtilis. Gram-positive. Model for bacterial chromosome replication and cell differentiation.


Scientific database for the bacterium Escherichia coli, the most widely studied prokaryotic model organism. Gram-negative.