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what does it mean?

Mike Cherry cherry at genome.stanford.edu
Mon Sep 8 23:28:11 EST 2003

The biosci server appears to remove some required part of the special  
characters you used.  I believe you are asking what the delta symbol  
means in a yeast genotype description.  The delta symbol means  
deletion, so yes the TRP1 gene would be mutant.

SGD has a page about nomenclature.  Of particular interest is the "gene  
nomenclature guide".  Its a PDF file from Trends in Genetics.  Fred  
Sherman also has a nice web site of information, see chapter 6 on  
Genetic Nomenclature:



On Monday, September 8, 2003, at 08:53 PM, [gb2312] shude yang wrote:

> Hello:
> I got a strain of yeast, called FD236-6A=A3=A8MATa,
> ura3-52, trp1=A6=A4 63, leu2=A6=A4 1, his3=A6=A4 200, acr3-=A6=A4
> 1::URA3 GAL2).Is it TRP1 mutant, what is the meaning
> of =A6=A4.Please give your help.Thank you.
> sdyang

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