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Table 3 Codon usage for genes located on the leading and lagging strands in the C. muridarum genome

From: Separate base usages of genes located on the leading and lagging strands in Chlamydia muridarum revealed by the Z curve method

AA Leading Significant a Lagging
   N RSCU   N RSCU
Phe TTT 6116 1.45 >> 4543 1.24
  TTC 2333 0.55 << 2806 0.76
Leu TTA 6382 2.01 >> 4608 1.61
  TTG 4653 1.46 >> 1955 0.68
  CTT 3866 1.21 << 4497 1.57
  CTC 1099 0.35 << 2230 0.78
  CTA 1748 0.55 << 2616 0.91
  CTG 1348 0.42 -- 1266 0.44
Ile ATT 6568 1.78 >> 5719 1.60
  ATC 2264 0.61 << 3227 0.91
  ATA 2225 0.60 >> 1747 0.49
Met ATG 3833 1.00 -- 2565 1.00
Val GTT 5637 1.73 >> 3056 1.59
  GTC 1470 0.45 << 1515 0.79
  GTA 3172 0.97 << 2012 1.05
  GTG 2766 0.85 >> 1104 0.57
Tyr TAT 4137 1.52 >> 2842 1.27
  TAC 1321 0.48 << 1628 0.73
TER TAA 270 0.00 -- 256 0.00
  TAG 161 0.00 -- 89 0.00
His CAT 2882 1.58 >> 2406 1.31
  CAC 776 0.42 << 1276 0.69
Gln CAA 4154 1.17 << 4833 1.52
  CAG 2974 0.83 >> 1539 0.48
Asn AAT 4480 1.52 >> 3811 1.29
  AAC 1418 0.48 << 2085 0.71
Lys AAA 6850 1.29 << 6888 1.60
  AAG 3801 0.71 >> 1726 0.40
Asp GAT 7033 1.66 >> 4364 1.43
  GAC 1462 0.34 << 1758 0.57
Glu GAA 7392 1.18 << 6318 1.49
  GAG 5141 0.82 >> 2180 0.51
Ser TCT 5851 2.58 -- 5418 2.51
  TCC 1530 0.67 << 2523 1.17
  TCA 1626 0.72 -- 1640 0.76
  TCG 1193 0.53 >> 786 0.36
Pro CCT 3633 2.16 >> 3588 1.99
  CCC 834 0.50 << 1532 0.85
  CCA 1606 0.95 -- 1648 0.91
  CCG 666 0.40 >> 454 0.25
Thr ACT 2794 1.44 >> 2898 1.35
  ACC 1010 0.52 << 1875 0.88
  ACA 2504 1.29 -- 2849 1.33
  ACG 1466 0.75 >> 939 0.44
Ala GCT 6448 2.01 >> 4661 1.82
  GCC 1459 0.45 << 1797 0.70
  GCA 3191 0.99 << 2826 1.11
  GCG 1753 0.55 >> 936 0.37
Cys TGT 2044 1.41 >> 1266 1.08
  TGC 851 0.59 << 1079 0.92
TER TGA 69 0.00 -- 65 0.00
Trp TGG 1863 1.00 -- 1275 1.00
Arg CGT 2571 1.65 >> 1399 1.40
  CGC 915 0.59 << 1351 1.35
  CGA 1844 1.18 << 1362 1.36
  CGG 989 0.63 >> 336 0.34
Ser AGT 2208 0.97 >> 1149 0.53
  AGC 1211 0.53 << 1411 0.65
Arg AGA 2228 1.43 >> 1284 1.28
  AGG 815 0.52 >> 271 0.27
Gly GGT 2331 0.76 >> 1199 0.59
  GGC 1241 0.41 << 1312 0.64
  GGA 5116 1.67 << 4021 1.98
  GGG 3538 1.16 >> 1611 0.79
  1. a Results of Chi-squared test: << indicates that the leading strand genes used the condon more frequently than the lagging strand genes; >> indicates the lagging strand genes used the codon more frequently than the leading strand genes; -- indicates that there is no significant difference in usage of the codon on either strand. Significance is examined at the level of 5%.