November 4, 2009 Gene data were updated. ( U00096.2 28-JUL-2009 )

June 19, 2009 W3110 was added to the sequence cutter.

June 1, 2009 polA gene data was updated.

Nov 21, 2008 The information on the Pfam 23.0 was constructed.

Aug 19, 2008 rimM and srmB gene data were updated.

July 17, 2008 Gene data were updated. ( U00096.2 31-MAR-2008 )

June 11, 2008 W3110 ( AP009048.1 ) genome sequence was added to BLAST page.

Feb 15, 2008 Gene data were updated. ( U00096.2 26-SEP-2007 ) EcoCyc links were added to gene detail pages. U00096.2(26-SEP-2007) genes and Kohara clone ( cut from U00096.1, U00096.2 ) sequences were added to BLAST page.

Sep 28, 2007 Gene and Deletion data were updated.

Aug 29, 2007 The information on Pfam 22.0 site was constructed.

Feb 28, 2007 A new version of Pec was opened to the public.( version 4, corresponding to U00096.2 genome )