intron-exon novice: minimum exon size??

David L. Haviland, Ph.D. HAVILAND at KIDS.WUSTL.EDU
Wed May 17 13:20:53 EST 1995

In <3p0c8i$cto at> leach at writes:

> I believe there is an 18bp (6 aa) exon found for the gamma 2 subunit
> of the gabaa receptor...alt. spliced
> ciao
> Martin

Well Martin, if you really want to get small...

If memory serves, the murine C5-anaphylatoxin receptor is comprised of two 
exons.  Exon one contains only the 5' flanking sequence and the initiation 
ATG - that's it.  The rest of the coding (ORF) is on exon 2 which is 7 kb 
downstream.  Perhaps this "takes the cake" for the smallest exon, 3 bp!



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