Genomatix Software GmbH - GEMS Launcher

Some facts about MatInspector's matrix library

	Rel. 9.0 Aug 2012	Rel. 8.4 Jun 2011	Rel. 8.3 Oct 2010	Rel. 8.2 Jan 2010	Rel. 8.1 Jun 2009	Rel. 8.0 Dec 2008	Rel. 7.1 Jun 2008	Rel. 7.0 Oct 2007	Rel. 6.3 Mar 2007	Rel. 6.2 Oct 2006
# matrices	1,381	1,326	1,283	1,166	1,106	974	799	773	737	713
# families	411	407	398	386	364	325	314	306	301	296
# TFs described	9,367	8,495	7,495	6,814	6,448	5,967	5,372	4,707	3,744	3,298

The current matrix library (Matrix Family Library Version 9.0) contains 1,381 weight matrices in six groups (transcription factor binding sites from species fungi, insects, plants, vertebrates, and miscellaneous as well as general core promoter elements).

Group	# matrices	# matrix families	# IUPACs	# IUPAC families
Fungi	155	67	---	---
Insects	91	52	---	---
Plants	191	79	431	323
Vertebrates	907	186	---	---
Miscellaneous	21	17	---	---
General Core Promoter Elements	16	10	---	---
Total	1,381	411	431	323

The vertebrate group represents binding site descriptions of 7847 transcription factors. The plant group represents binding site descriptions of 1105 transcription factors from several plant species. The fungi group represents binding site descriptions of 140 transcription factors from Saccharomyces cerevisiae and Schizosaccharomyces pombe.

For plants, a IUPAC library containing individual plant transcription factor binding sites is available in addition to the matrix library. The IUPAC library is based on PLACE). Identical and similar TF binding sites of PLACE have been grouped into IUPAC families and very unspecific binding sites (e.g. CANNTG) have been removed.