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Table 1 Correlations between distance to nearest origin, average gene expression in exponential phase, proportion archaeal core genes, protein-coding density, average distance between adjacent bidirectional (divergently transcribed) genes, and transposable element density in the two Sulfolobus chromosomes

From: Replication-biased genome organisation in the crenarchaeon Sulfolobus

  Gene expression Archaeal core genes Coding density Bidirectional gene pair distances Proportion transposons
  S. solfataricus
Distance to origin -0.68 (10-3) -0.62 (10-2) -0.64 (10-2) 0.57 (10-2) 0.71 (10-3)
Gene expression   0.83 (10-5) 0.72 (10-3) -0.71 (10-3) -0.64 (10-2)
Archaeal core genes    0.74 (10-4) -0.58 (10-2) -0.75 (10-4)
Coding density     -0.92 (10-5) -0.87 (10-6)
Bidirectional gene distances      0.74 (10-4)
  S. acidocaldarius
Distance to origin -0.83 (10-5) -0.77 (10-4) -0.64 (10-2) 0.57 (10-2)  
Gene expression   0.85 (10-6) 0.70 (10-3) -0.67 (10-3)  
Archaeal core genes    0.51 (10-1) -0.59 (10-2)  
Coding density     -0.79 (10-5)  
Bidirectional gene distances      
  1. The genomic parameters were calculated in 100 kb, non-overlapping windows (22 and 29 windows for S. acidocaldarius and S. solfataricus, respectively). Numbers indicate Spearman rank-order correlation coefficients, ρ, with P values (rounded upwards) within parenthesis.