Table II.

Overrepresented functions in transcript clusters relative to ATH1 probe sets

GO categorization data were determined on July 18, 2007. P-values were obtained using Fisher's exact test.

Cluster No.By GO Cellular ComponentP-ValueBy GO Molecular FunctionP-Value
Up-regulated
1Nucleus0.015Transcription factor activity0.00002
Cell wall0.0009Nucleotide binding0.0003
Other membranes0.029Transferase activity0.02
DNA or RNA binding0.03
2Cell wall0.0007Hydrolase activity0.002
Extracellular0.017Other enzyme Activity0.0004
Endoplasmic reticulum0.007
3Nucleus0.03Transcription factor activity0.00001
Cell wall0.003Other enzyme activity0.008
Other membranes0.0019
Up-regulated early; down-regulated late
4Other membranes0.003Transporter activity0.037
Mitochondria0.042
Down-regulated
5Extracellular0.019Transferase activity0.008
Other membranes0.00003Hydrolase activity0.0004
6Nucleus0.0004Transcription factor activity1.5 e-7
Cell wall0.03DNA or RNA binding0.001
Extracellular0.016
Plasma membrane0.04
7Mitochondria0.03Transferase activity0.03
Other membranes0.016Hydrolase activity0.04
Down-regulated early; up-regulated late
8Transporter activity0.025
Other enzyme activity0.027