We need to find out if in pombe
transcription actually regulates G1/S, or is required for it.
http://www.pombase.org/spombe/related/GO:0000083
IIRC In budding yeast, it is regulatory because there is a feedback loop to increase cyclin transcription. in pombe the cyclins are present and regulation is post trasncriptional.
This would mean that although these gene products are required for G1/S to occur they might not be regulatory.
I need to run this by Jacky first.
Val