GATExplorer: Genomic and Transcriptomic Explorer; mapping expression probes to gene loci, transcripts, exons and ncRNAs

Table 1 Coverage of the probe mapping.

	Transcripts				Gene Loci				TOTAL N of Transcripts	TOTAL N of Gene Loci
	Unique mapped		All mapped		Unique mapped		All mapped
	N transcripts	%	N transcripts	%	N gene loci	%	N gene loci	%
Microarray
HG U133A	7198	13,57%	31219	58,88%	12218	44,95%	15048	55,36%	53024	27184
HG U133 Plus 2.0	11755	22,17%	42819	80,75%	17710	65,15%	20764	76,38%	53024	27184
Human Gene 1.0	19947	37,62%	48169	90,84%	19923	73,29%	22446	82,57%	53024	27184
Human Exon 1.0	28024	52,85%	51851	97,79%	23967	88,17%	26047	95,82%	53024	27184

Coverage of the probe mapping for four human Affymetrix microarray models: U133A, U133 Plus 2.0, Gene 1.0 and Exon 1.0. Coverage is defined as the proportion of gene loci or transcripts from the total genes/transcripts of the Ensembl human genome that are mapped by the probes of a given microarray. The term "unique mapped" indicates the gene loci or transcripts mapped by a unique set of probes of a given array that do not cross-hybridize with any other known gene loci or transcript (i.e. such probes are not ambiguous). N corresponds to number of gene loci or transcripts.

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