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Table 2 Expression of arginine operons when cells were grown with methionine or with MTR as the sulfur source

From: Extracting biological information from DNA arrays: an unexpected link between arginine and methionine metabolism in Bacillus subtilis

Gene and    
  Met MTR Ratio
spot    
argB a 1286 907 1.43
argB b 1329 928  
argC a 1116 735 1.61
argC b 1145 666  
argD a 930 592 1.62
argD b 1014 605  
argE a 340 246 1.27
argE b 446 372  
argF a 699 406 1.77
argF b 717 392  
argG a 2304 1896 1.28
argG b 2827 2121  
argH a 2165 1120 1.94
argH b 2237 1147  
argJ a 1045 509 1.94
argJ b 1051 569  
argS a 991 838 1.16
argS b 984 858  
carA a 2329 2046 1.12
carA b 2326 2094  
carB a 932 635 1.47
carB b 912 618  
yqzE a 680 460 1.57
yqzE b 685 407  
yqiX a 2190 1401 1.58
yqiX b 2264 1412  
yqiY a 750 585 1.41
yqiY b 876 571  
yqiZ a 1527 926 1.70
yqiZ b 1595 907  
  1. cDNA hybridization after growth in methionine or MTR. The conditions are chosen to display roughly identical values for most genes in both conditions. The values obtained for the arginine operons described in the text are shown here. They indicate a higher expression in methionine as compared to MTR, all things being otherwise equal. Each spot in the experiment is referred to as a and b.