GATA (a Graphic Alignment Tool for Comparative Sequence Analysis)

GATA is a Java application that graphically aligns DNA sequences using the NCBI BLASTN program ( To use GATA, you may need to download and uncompress the blast package (e.g. blast-2.2.6-powerpc-macosx.tar.gz for macOSX) from NCBI (

To align DNA sequences with GATA, first launch GATAliner to create and save the alignment objects. Then launch GATAPlotter to display the alignment.

For questions, comments, suggestions, or bug reports contact David Nix ( or the Eisen Lab.