Hello Marco,

You can get this information from our Table Browser tool. The 
knownCanonical table identifies exon and intron regions and if we 
intersect this with the complement of the UCSC genes track this should 
return only the intronic regions.

To do this, go to the Table Browser 
(http://genome.ucsc.edu/cgi-bin/hgTables) and after selecting the human 
hg19 assembly select:

group: Genes and Gene Prediction Tracks
track: UCSC Genes
table: knownCanonical

then click "create" intersection.

In the "Intersection with knownCanonical" menu select:

group: Genes and Gene Prediction Tracks
track: UCSC Genes
table: knownGene

then select:

"Base-pair-wise intersection (AND) of knownCanonical and UCSC Genes "

and

" Complement UCSC Genes before base-pair-wise intersection/union "

then hit submit. Again in the main Table Browser menu click the 
"summary/statistics" button near the bottom - this should return the 
information you are looking for.

Best regards,

Pauline Fujita
UCSC Genome Bioinformatics Group
http://genome.ucsc.edu


On 5/11/12 10:19 AM, Marco Santagostino wrote:
> Dear Sir,
> I would like to know which percentage of the human genome is located
> inside introns, I was not able to find this statistic in the data tables
> concerning the current assembly of the human genome.
>
> Thank you for the concideration,
>
> Marco Santagostino
>
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