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Table 1 Some features of the Arabidopsis chromosomes and proteome

From: Goodbye to 'one by one' genetics

  Number %
(a) The five DNA molecules   
   Total length (Mb) ~115  
   Number of genes ~25,500  
   Average gene density (kb per gene) ~4.5  
   Average gene length (kb) ~2  
   Average peptide length (amino acid) 430  
   Number of genes with ESTs 15,300 60%
   Number of ESTs 105,733  
(b) The proteome   
   Total proteins ~25,500 100
   Proteins with similarity to GenBank entries 17,850 70
   Unknown proteins 5865 23
   Hypothetical proteins 7140 28
   Proteins with putative functions 12,495 49
(c) Classification of proteins with putative functions   
   Cellular metabolism   22.5
   Transcription   16.9
   Defense   11.5
   Signaling   10.4
   Growth   11.7
   Protein fate   9.9
   Intracellular transport   8.3
   Transport   4.8
   Protein synthesis   4.1
  1. ~denotes approximate numbers.