[Genome] Detail about table knownGene

[Ann Zweig]

Hello Samuel,

	To create the Known Gene track for the May 2004 assembly (hg17), we used a 
process we call KG II.  You can read about the process by pressing on the 
'mini-button' to the left of the actual track display, or by clicking on the 
hyperlinked track name in the track controls (below the display).  To cluster 
together the genes in this track, we used a program from our source code called 
  hgClusterGenes.  Then among the genes that overlap, the longest gene
is chosen to be the canonical gene to represent the cluster.

	Since then, we have changed the way we create the Known Gene track.  On the 
next human assembly (hg18), we use the KG III process.  You may want to take a 
look at this track as well for comparison sake.

	I hope this information is helpful to you.  Please don't hesitate to contact 
the mail list again if you require further assistance.

Regards,

----------
Ann Zweig
UCSC Genome Bioinformatics Group
http://genome.ucsc.edu

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Samuel GRANJEAUD - IR/IFR137 wrote:
> Hello!
> 
> I am using May2004 assembly. I was wondering what is the rational behind 
> cluster that links together entries in the knownGene table.
> 
> Best regards.
> 
> _______________________________________________
> Genome maillist  -  Genome at soe.ucsc.edu
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