Experiment: Beta-Lactose (C)
Only strains with sufficient reads to estimate fitness are shown,
but the strain fitness values are still rather noisy and may be biased towards zero.
Strains near the edge of a gene are not shown as being associated with that
gene (they are in grey).
Strains in the central 10-90% of a gene are color coded by the insertion's strand.
Usually, "+" means that the selectable marker is encoded on the forward strand,
i.e., transcribed rightward.
500 nt Echvi_1974 and Echvi_1975 are separated by 144 nucleotides Echvi_1975 and Echvi_1976 overlap by 4 nucleotides Echvi_1976 and Echvi_1977 are separated by 59 nucleotides Echvi_1977 and Echvi_1978 are separated by 3 nucleotides
Echvi_1974: Echvi_1974 - RNA polymerase sigma-70 factor, Bacteroides expansion family 1, at 2,326,703 to 2,327,302
_1974
Echvi_1975: Echvi_1975 - hypothetical protein, at 2,327,447 to 2,327,845
_1975
Echvi_1976: Echvi_1976 - hypothetical protein, at 2,327,842 to 2,328,174
_1976
Echvi_1977: Echvi_1977 - Type IV secretory pathway, VirD4 components, at 2,328,234 to 2,330,222
_1977
Echvi_1978: Echvi_1978 - Relaxase/Mobilisation nuclease domain., at 2,330,226 to 2,331,422
_1978
Position (kb)
2328
2329
2330
2331 Strain fitness (log2 ratio)
-2
-1
0
1
2
3 at 2327.266 kb on - strand at 2327.266 kb on - strand at 2327.278 kb on + strand at 2327.284 kb on + strand at 2327.285 kb on - strand at 2327.285 kb on - strand at 2327.303 kb on - strand at 2327.309 kb on + strand at 2327.343 kb on - strand at 2327.374 kb on - strand at 2327.381 kb on - strand at 2327.390 kb on + strand at 2327.390 kb on + strand at 2327.391 kb on - strand at 2327.394 kb on + strand at 2327.394 kb on + strand at 2327.394 kb on + strand at 2327.394 kb on + strand at 2327.394 kb on + strand at 2327.399 kb on + strand at 2327.412 kb on + strand at 2327.455 kb on + strand at 2327.478 kb on + strand at 2327.533 kb on + strand, within Echvi_1975 at 2327.534 kb on - strand, within Echvi_1975 at 2327.534 kb on - strand, within Echvi_1975 at 2327.534 kb on - strand, within Echvi_1975 at 2327.564 kb on - strand, within Echvi_1975 at 2327.596 kb on - strand, within Echvi_1975 at 2327.617 kb on - strand, within Echvi_1975 at 2327.658 kb on + strand, within Echvi_1975 at 2327.658 kb on + strand, within Echvi_1975 at 2327.658 kb on + strand, within Echvi_1975 at 2327.659 kb on - strand, within Echvi_1975 at 2327.659 kb on - strand, within Echvi_1975 at 2327.675 kb on + strand, within Echvi_1975 at 2327.715 kb on - strand, within Echvi_1975 at 2327.720 kb on + strand, within Echvi_1975 at 2327.765 kb on - strand, within Echvi_1975 at 2327.767 kb on + strand, within Echvi_1975 at 2327.811 kb on - strand at 2327.819 kb on + strand at 2327.838 kb on + strand at 2327.846 kb on - strand at 2327.847 kb on + strand at 2327.847 kb on + strand at 2327.847 kb on + strand at 2327.847 kb on + strand at 2327.847 kb on + strand at 2327.847 kb on + strand at 2327.850 kb on + strand at 2327.850 kb on + strand at 2327.860 kb on + strand at 2327.901 kb on + strand, within Echvi_1976 at 2327.937 kb on + strand, within Echvi_1976 at 2327.937 kb on + strand, within Echvi_1976 at 2327.938 kb on - strand, within Echvi_1976 at 2327.953 kb on + strand, within Echvi_1976 at 2327.955 kb on + strand, within Echvi_1976 at 2327.956 kb on - strand, within Echvi_1976 at 2327.992 kb on - strand, within Echvi_1976 at 2328.011 kb on - strand, within Echvi_1976 at 2328.061 kb on + strand, within Echvi_1976 at 2328.062 kb on - strand, within Echvi_1976 at 2328.062 kb on - strand, within Echvi_1976 at 2328.070 kb on - strand, within Echvi_1976 at 2328.070 kb on - strand, within Echvi_1976 at 2328.072 kb on - strand, within Echvi_1976 at 2328.151 kb on + strand at 2328.174 kb on + strand at 2328.180 kb on - strand at 2328.182 kb on + strand at 2328.183 kb on - strand at 2328.187 kb on - strand at 2328.232 kb on + strand at 2328.235 kb on + strand at 2328.259 kb on - strand at 2328.278 kb on + strand at 2328.278 kb on + strand at 2328.283 kb on + strand at 2328.393 kb on - strand at 2328.394 kb on + strand at 2328.394 kb on + strand at 2328.462 kb on + strand, within Echvi_1977 at 2328.468 kb on + strand, within Echvi_1977 at 2328.468 kb on + strand, within Echvi_1977 at 2328.468 kb on + strand, within Echvi_1977 at 2328.468 kb on + strand, within Echvi_1977 at 2328.468 kb on + strand, within Echvi_1977 at 2328.469 kb on - strand, within Echvi_1977 at 2328.469 kb on - strand, within Echvi_1977 at 2328.470 kb on + strand, within Echvi_1977 at 2328.470 kb on + strand, within Echvi_1977 at 2328.471 kb on - strand, within Echvi_1977 at 2328.471 kb on - strand, within Echvi_1977 at 2328.563 kb on + strand, within Echvi_1977 at 2328.563 kb on + strand, within Echvi_1977 at 2328.575 kb on + strand at 2328.575 kb on + strand, within Echvi_1977 at 2328.575 kb on + strand, within Echvi_1977 at 2328.593 kb on + strand, within Echvi_1977 at 2328.651 kb on - strand, within Echvi_1977 at 2328.700 kb on - strand, within Echvi_1977 at 2328.700 kb on - strand, within Echvi_1977 at 2328.700 kb on - strand, within Echvi_1977 at 2328.732 kb on + strand, within Echvi_1977 at 2328.733 kb on - strand, within Echvi_1977 at 2328.741 kb on - strand, within Echvi_1977 at 2328.741 kb on - strand, within Echvi_1977 at 2328.742 kb on + strand, within Echvi_1977 at 2328.773 kb on + strand, within Echvi_1977 at 2328.774 kb on - strand, within Echvi_1977 at 2328.793 kb on - strand, within Echvi_1977 at 2328.840 kb on + strand, within Echvi_1977 at 2328.896 kb on + strand, within Echvi_1977 at 2328.896 kb on + strand, within Echvi_1977 at 2328.897 kb on - strand, within Echvi_1977 at 2328.897 kb on - strand, within Echvi_1977 at 2328.898 kb on + strand, within Echvi_1977 at 2328.899 kb on - strand, within Echvi_1977 at 2328.988 kb on - strand, within Echvi_1977 at 2329.011 kb on + strand, within Echvi_1977 at 2329.011 kb on + strand, within Echvi_1977 at 2329.012 kb on - strand, within Echvi_1977 at 2329.012 kb on - strand, within Echvi_1977 at 2329.012 kb on - strand, within Echvi_1977 at 2329.015 kb on + strand, within Echvi_1977 at 2329.016 kb on - strand, within Echvi_1977 at 2329.018 kb on + strand, within Echvi_1977 at 2329.019 kb on - strand, within Echvi_1977 at 2329.019 kb on - strand, within Echvi_1977 at 2329.125 kb on + strand, within Echvi_1977 at 2329.212 kb on - strand, within Echvi_1977 at 2329.261 kb on - strand, within Echvi_1977 at 2329.306 kb on - strand, within Echvi_1977 at 2329.306 kb on - strand, within Echvi_1977 at 2329.334 kb on + strand, within Echvi_1977 at 2329.334 kb on + strand, within Echvi_1977 at 2329.337 kb on + strand, within Echvi_1977 at 2329.364 kb on + strand, within Echvi_1977 at 2329.364 kb on + strand, within Echvi_1977 at 2329.365 kb on - strand, within Echvi_1977 at 2329.365 kb on - strand, within Echvi_1977 at 2329.365 kb on - strand, within Echvi_1977 at 2329.435 kb on + strand, within Echvi_1977 at 2329.435 kb on + strand, within Echvi_1977 at 2329.435 kb on + strand, within Echvi_1977 at 2329.435 kb on + strand, within Echvi_1977 at 2329.454 kb on + strand, within Echvi_1977 at 2329.455 kb on - strand, within Echvi_1977 at 2329.496 kb on + strand, within Echvi_1977 at 2329.582 kb on + strand, within Echvi_1977 at 2329.643 kb on + strand, within Echvi_1977 at 2329.644 kb on - strand, within Echvi_1977 at 2329.644 kb on - strand, within Echvi_1977 at 2329.677 kb on - strand, within Echvi_1977 at 2329.679 kb on - strand, within Echvi_1977 at 2329.798 kb on - strand, within Echvi_1977 at 2329.821 kb on + strand, within Echvi_1977 at 2329.821 kb on + strand, within Echvi_1977 at 2329.849 kb on + strand, within Echvi_1977 at 2329.849 kb on + strand, within Echvi_1977 at 2329.886 kb on - strand, within Echvi_1977 at 2329.890 kb on + strand, within Echvi_1977 at 2329.890 kb on + strand, within Echvi_1977 at 2329.890 kb on + strand, within Echvi_1977 at 2329.890 kb on + strand, within Echvi_1977 at 2329.890 kb on + strand, within Echvi_1977 at 2329.891 kb on - strand, within Echvi_1977 at 2329.891 kb on - strand, within Echvi_1977 at 2329.891 kb on - strand, within Echvi_1977 at 2329.891 kb on - strand, within Echvi_1977 at 2329.891 kb on - strand, within Echvi_1977 at 2329.910 kb on - strand, within Echvi_1977 at 2330.031 kb on - strand at 2330.031 kb on - strand at 2330.031 kb on - strand at 2330.033 kb on + strand at 2330.033 kb on + strand at 2330.034 kb on - strand at 2330.034 kb on - strand at 2330.034 kb on - strand at 2330.034 kb on - strand at 2330.037 kb on - strand at 2330.037 kb on - strand at 2330.064 kb on - strand at 2330.079 kb on + strand at 2330.128 kb on + strand at 2330.128 kb on + strand at 2330.128 kb on + strand at 2330.129 kb on - strand at 2330.129 kb on - strand at 2330.129 kb on - strand at 2330.129 kb on - strand at 2330.131 kb on + strand at 2330.132 kb on - strand at 2330.132 kb on - strand at 2330.135 kb on - strand at 2330.148 kb on + strand at 2330.149 kb on - strand at 2330.149 kb on - strand at 2330.149 kb on - strand at 2330.149 kb on - strand at 2330.175 kb on - strand at 2330.205 kb on - strand at 2330.376 kb on - strand, within Echvi_1978 at 2330.459 kb on + strand, within Echvi_1978 at 2330.482 kb on + strand, within Echvi_1978 at 2330.484 kb on + strand, within Echvi_1978 at 2330.484 kb on + strand, within Echvi_1978 at 2330.484 kb on + strand, within Echvi_1978 at 2330.485 kb on - strand, within Echvi_1978 at 2330.485 kb on - strand, within Echvi_1978 at 2330.541 kb on + strand, within Echvi_1978 at 2330.585 kb on + strand, within Echvi_1978 at 2330.585 kb on + strand, within Echvi_1978 at 2330.586 kb on - strand, within Echvi_1978 at 2330.634 kb on + strand, within Echvi_1978 at 2330.663 kb on - strand, within Echvi_1978 at 2330.663 kb on - strand, within Echvi_1978 at 2330.666 kb on + strand, within Echvi_1978 at 2330.667 kb on - strand, within Echvi_1978 at 2330.843 kb on + strand, within Echvi_1978 at 2330.843 kb on + strand, within Echvi_1978 at 2330.843 kb on + strand, within Echvi_1978 at 2330.845 kb on + strand, within Echvi_1978 at 2330.929 kb on - strand, within Echvi_1978 at 2330.977 kb on + strand, within Echvi_1978 at 2331.069 kb on - strand, within Echvi_1978 at 2331.084 kb on - strand, within Echvi_1978 at 2331.114 kb on + strand, within Echvi_1978 at 2331.121 kb on + strand, within Echvi_1978 at 2331.141 kb on + strand, within Echvi_1978 at 2331.141 kb on + strand, within Echvi_1978 at 2331.141 kb on + strand, within Echvi_1978 at 2331.142 kb on - strand, within Echvi_1978 at 2331.143 kb on + strand, within Echvi_1978 at 2331.144 kb on - strand, within Echvi_1978 at 2331.155 kb on - strand, within Echvi_1978 at 2331.155 kb on - strand, within Echvi_1978 at 2331.221 kb on + strand, within Echvi_1978 at 2331.221 kb on + strand, within Echvi_1978 at 2331.222 kb on - strand, within Echvi_1978
Per-strain Table
Position Strand Gene LocusTag Fraction Beta-Lactose (C) remove 2,327,266 - +0.4 2,327,266 - +1.1 2,327,278 + +0.9 2,327,284 + -0.6 2,327,285 - +0.2 2,327,285 - +0.4 2,327,303 - -0.4 2,327,309 + +0.6 2,327,343 - -0.0 2,327,374 - +1.0 2,327,381 - -0.5 2,327,390 + -0.6 2,327,390 + +0.4 2,327,391 - -0.3 2,327,394 + -0.7 2,327,394 + +0.1 2,327,394 + -0.8 2,327,394 + -0.3 2,327,394 + -1.0 2,327,399 + +0.7 2,327,412 + +0.2 2,327,455 + -0.7 2,327,478 + -0.3 2,327,533 + Echvi_1975 0.22 -0.7 2,327,534 - Echvi_1975 0.22 -0.2 2,327,534 - Echvi_1975 0.22 +1.4 2,327,534 - Echvi_1975 0.22 -1.1 2,327,564 - Echvi_1975 0.29 +1.2 2,327,596 - Echvi_1975 0.37 +0.7 2,327,617 - Echvi_1975 0.43 +0.8 2,327,658 + Echvi_1975 0.53 -0.2 2,327,658 + Echvi_1975 0.53 -1.0 2,327,658 + Echvi_1975 0.53 +0.9 2,327,659 - Echvi_1975 0.53 -0.4 2,327,659 - Echvi_1975 0.53 -1.4 2,327,675 + Echvi_1975 0.57 +1.2 2,327,715 - Echvi_1975 0.67 +0.4 2,327,720 + Echvi_1975 0.68 +0.6 2,327,765 - Echvi_1975 0.80 -1.8 2,327,767 + Echvi_1975 0.80 -1.8 2,327,811 - -0.4 2,327,819 + +0.9 2,327,838 + +0.3 2,327,846 - +0.5 2,327,847 + -0.5 2,327,847 + +0.6 2,327,847 + +2.2 2,327,847 + -0.9 2,327,847 + -0.1 2,327,847 + +0.7 2,327,850 + +0.6 2,327,850 + +0.2 2,327,860 + +0.1 2,327,901 + Echvi_1976 0.18 +0.7 2,327,937 + Echvi_1976 0.29 +0.6 2,327,937 + Echvi_1976 0.29 -0.1 2,327,938 - Echvi_1976 0.29 +0.3 2,327,953 + Echvi_1976 0.33 -0.1 2,327,955 + Echvi_1976 0.34 +0.7 2,327,956 - Echvi_1976 0.34 +0.6 2,327,992 - Echvi_1976 0.45 +0.0 2,328,011 - Echvi_1976 0.51 -0.4 2,328,061 + Echvi_1976 0.66 +0.9 2,328,062 - Echvi_1976 0.66 +1.7 2,328,062 - Echvi_1976 0.66 +0.7 2,328,070 - Echvi_1976 0.68 +1.3 2,328,070 - Echvi_1976 0.68 -1.7 2,328,072 - Echvi_1976 0.69 -0.6 2,328,151 + +1.1 2,328,174 + -1.9 2,328,180 - +1.3 2,328,182 + +2.5 2,328,183 - +1.6 2,328,187 - -1.1 2,328,232 + +1.1 2,328,235 + -1.2 2,328,259 - +2.2 2,328,278 + -0.9 2,328,278 + +0.0 2,328,283 + -1.0 2,328,393 - -1.0 2,328,394 + -1.3 2,328,394 + -0.5 2,328,462 + Echvi_1977 0.11 -0.3 2,328,468 + Echvi_1977 0.12 +1.7 2,328,468 + Echvi_1977 0.12 +0.5 2,328,468 + Echvi_1977 0.12 +0.6 2,328,468 + Echvi_1977 0.12 -0.4 2,328,468 + Echvi_1977 0.12 +0.0 2,328,469 - Echvi_1977 0.12 -1.1 2,328,469 - Echvi_1977 0.12 +0.4 2,328,470 + Echvi_1977 0.12 +1.2 2,328,470 + Echvi_1977 0.12 -1.3 2,328,471 - Echvi_1977 0.12 +0.8 2,328,471 - Echvi_1977 0.12 +0.4 2,328,563 + Echvi_1977 0.17 -0.3 2,328,563 + Echvi_1977 0.17 -0.2 2,328,575 + +2.2 2,328,575 + Echvi_1977 0.17 -1.5 2,328,575 + Echvi_1977 0.17 -0.3 2,328,593 + Echvi_1977 0.18 -0.2 2,328,651 - Echvi_1977 0.21 +0.0 2,328,700 - Echvi_1977 0.23 +0.2 2,328,700 - Echvi_1977 0.23 -0.2 2,328,700 - Echvi_1977 0.23 +0.6 2,328,732 + Echvi_1977 0.25 +0.7 2,328,733 - Echvi_1977 0.25 +1.0 2,328,741 - Echvi_1977 0.25 -0.0 2,328,741 - Echvi_1977 0.25 -0.6 2,328,742 + Echvi_1977 0.26 +0.5 2,328,773 + Echvi_1977 0.27 -0.9 2,328,774 - Echvi_1977 0.27 -0.6 2,328,793 - Echvi_1977 0.28 -1.9 2,328,840 + Echvi_1977 0.30 +0.2 2,328,896 + Echvi_1977 0.33 -0.1 2,328,896 + Echvi_1977 0.33 +0.3 2,328,897 - Echvi_1977 0.33 -0.2 2,328,897 - Echvi_1977 0.33 +0.4 2,328,898 + Echvi_1977 0.33 +0.6 2,328,899 - Echvi_1977 0.33 +0.8 2,328,988 - Echvi_1977 0.38 +0.4 2,329,011 + Echvi_1977 0.39 -0.0 2,329,011 + Echvi_1977 0.39 -0.1 2,329,012 - Echvi_1977 0.39 +1.9 2,329,012 - Echvi_1977 0.39 +0.6 2,329,012 - Echvi_1977 0.39 +0.4 2,329,015 + Echvi_1977 0.39 -1.8 2,329,016 - Echvi_1977 0.39 -0.5 2,329,018 + Echvi_1977 0.39 -0.8 2,329,019 - Echvi_1977 0.39 +0.2 2,329,019 - Echvi_1977 0.39 +1.8 2,329,125 + Echvi_1977 0.45 -2.0 2,329,212 - Echvi_1977 0.49 +0.1 2,329,261 - Echvi_1977 0.52 +0.3 2,329,306 - Echvi_1977 0.54 +1.2 2,329,306 - Echvi_1977 0.54 -0.2 2,329,334 + Echvi_1977 0.55 -0.0 2,329,334 + Echvi_1977 0.55 -0.2 2,329,337 + Echvi_1977 0.55 +0.3 2,329,364 + Echvi_1977 0.57 +2.9 2,329,364 + Echvi_1977 0.57 +0.6 2,329,365 - Echvi_1977 0.57 +1.1 2,329,365 - Echvi_1977 0.57 +0.7 2,329,365 - Echvi_1977 0.57 -0.3 2,329,435 + Echvi_1977 0.60 +1.3 2,329,435 + Echvi_1977 0.60 +0.9 2,329,435 + Echvi_1977 0.60 +0.2 2,329,435 + Echvi_1977 0.60 -1.6 2,329,454 + Echvi_1977 0.61 -2.4 2,329,455 - Echvi_1977 0.61 +0.5 2,329,496 + Echvi_1977 0.63 +0.8 2,329,582 + Echvi_1977 0.68 -0.3 2,329,643 + Echvi_1977 0.71 +1.9 2,329,644 - Echvi_1977 0.71 -0.6 2,329,644 - Echvi_1977 0.71 -0.8 2,329,677 - Echvi_1977 0.73 -1.7 2,329,679 - Echvi_1977 0.73 +0.0 2,329,798 - Echvi_1977 0.79 +1.0 2,329,821 + Echvi_1977 0.80 -0.6 2,329,821 + Echvi_1977 0.80 +1.6 2,329,849 + Echvi_1977 0.81 -0.5 2,329,849 + Echvi_1977 0.81 +0.3 2,329,886 - Echvi_1977 0.83 +2.1 2,329,890 + Echvi_1977 0.83 +1.2 2,329,890 + Echvi_1977 0.83 +0.4 2,329,890 + Echvi_1977 0.83 -0.0 2,329,890 + Echvi_1977 0.83 +0.3 2,329,890 + Echvi_1977 0.83 -0.0 2,329,891 - Echvi_1977 0.83 +2.2 2,329,891 - Echvi_1977 0.83 +0.1 2,329,891 - Echvi_1977 0.83 +0.3 2,329,891 - Echvi_1977 0.83 +0.3 2,329,891 - Echvi_1977 0.83 -1.5 2,329,910 - Echvi_1977 0.84 +1.3 2,330,031 - +1.5 2,330,031 - -1.4 2,330,031 - -0.6 2,330,033 + +0.9 2,330,033 + +2.4 2,330,034 - -0.4 2,330,034 - -0.8 2,330,034 - -0.4 2,330,034 - +0.2 2,330,037 - -0.6 2,330,037 - -1.0 2,330,064 - -0.4 2,330,079 + +0.1 2,330,128 + +0.7 2,330,128 + -1.1 2,330,128 + -1.0 2,330,129 - +0.4 2,330,129 - -0.9 2,330,129 - +0.7 2,330,129 - -1.0 2,330,131 + +1.9 2,330,132 - -0.4 2,330,132 - +3.2 2,330,135 - -0.3 2,330,148 + +0.7 2,330,149 - +0.4 2,330,149 - +1.2 2,330,149 - -0.1 2,330,149 - +0.5 2,330,175 - -1.1 2,330,205 - -0.5 2,330,376 - Echvi_1978 0.13 -1.0 2,330,459 + Echvi_1978 0.19 -0.1 2,330,482 + Echvi_1978 0.21 +1.3 2,330,484 + Echvi_1978 0.22 +0.3 2,330,484 + Echvi_1978 0.22 +1.7 2,330,484 + Echvi_1978 0.22 -1.9 2,330,485 - Echvi_1978 0.22 -1.3 2,330,485 - Echvi_1978 0.22 +2.0 2,330,541 + Echvi_1978 0.26 +0.4 2,330,585 + Echvi_1978 0.30 -1.3 2,330,585 + Echvi_1978 0.30 -0.3 2,330,586 - Echvi_1978 0.30 +1.9 2,330,634 + Echvi_1978 0.34 -0.6 2,330,663 - Echvi_1978 0.37 -0.6 2,330,663 - Echvi_1978 0.37 +0.2 2,330,666 + Echvi_1978 0.37 +1.9 2,330,667 - Echvi_1978 0.37 +0.9 2,330,843 + Echvi_1978 0.52 -0.8 2,330,843 + Echvi_1978 0.52 +1.0 2,330,843 + Echvi_1978 0.52 +0.4 2,330,845 + Echvi_1978 0.52 -0.3 2,330,929 - Echvi_1978 0.59 +0.7 2,330,977 + Echvi_1978 0.63 -0.5 2,331,069 - Echvi_1978 0.70 -1.9 2,331,084 - Echvi_1978 0.72 +1.2 2,331,114 + Echvi_1978 0.74 -0.2 2,331,121 + Echvi_1978 0.75 +1.3 2,331,141 + Echvi_1978 0.76 +0.7 2,331,141 + Echvi_1978 0.76 +1.2 2,331,141 + Echvi_1978 0.76 +0.4 2,331,142 - Echvi_1978 0.77 -0.5 2,331,143 + Echvi_1978 0.77 +0.5 2,331,144 - Echvi_1978 0.77 -0.0 2,331,155 - Echvi_1978 0.78 -1.8 2,331,155 - Echvi_1978 0.78 +0.1 2,331,221 + Echvi_1978 0.83 -0.4 2,331,221 + Echvi_1978 0.83 +0.1 2,331,222 - Echvi_1978 0.83 -2.6
Or see this region's nucleotide sequence