Table 1 Replication, repair, and recombination genes under positive selection in ionizing-radiation-resistant bacteria (IRRB)^a.

DR_0467 Dgeo_1609 Krad_R0056 Rxyl_0486

Hypothetical DNA polymerase^♠

n.a.^c

-1.779

DR_0507 Dgeo_0255 Krad_3187 Rxyl_1096

DNA polymerase III, α subunit*

n.a.

-1.725

DR_0856 Dgeo_1818 Krad_3247 Rxyl_2984

DNA polymerase III, ε subunit◆

2.81

DR_1244 Dgeo_0745 Krad_3423 Rxyl_1518

Putative DNA polymerase III, δ subunit◆

1.68

DR_1707 Dgeo_1666 Krad_2951 Rxyl_2025

DNA-directed DNA polymerase*

3.15

DR_1751 Dgeo_1556 Krad_1521 Rxyl_0503

DNA polymerase-related protein◆

n.a.

-1.744

DR_2410 Dgeo_2135 Krad_R0007 Rxyl_2444

DNA polymerase III, τ/γ subunit*

2.3

Replication complex

DR_0100 Dgeo_0165 Krad_4338 Rxyl_0045

Single-stranded DNA-binding protein*

n.a.

-1.872

DR_0549 Dgeo_2037 Krad_4333 Rxyl_0852

Replicative DNA helicase^♠

n.a.

-1.539

DR_0601 Dgeo_R0043 Krad_3361 Rxyl_1502

DNA primase*

n.a.

-1.770

DR_0906 Dgeo_0546 Krad_0006 Rxyl_0005

DNA gyrase, subunit B*

3.4

DR_1374 Dgeo_2001 Krad_0487 Rxyl_1964

DNA topoisomerase I*

3.13

DR_1913 Dgeo_1016 Krad_0007 Rxyl_0006

DNA gyrase, subunit A*

3.48

Other DNA-associated proteins

DR_0120 Dgeo_2345 Krad_1409 Rxyl_1396

smf protein^♠

1.87

DR_0289 Dgeo_0248 Krad_0422 Rxyl_2676

Endonuclease III^♠

2.82

DR_0440 Dgeo_0327 Krad_3056 Rxyl_1322

Holliday junction resolvase*

2.06

DR_0493 Dgeo_0442 Krad_1377 Rxyl_2433

Formamidopyrimidine-DNA glycosylase◆

2.37

DR_0596 Dgeo_0404 Krad_3053 Rxyl_1324

Holliday junction DNA helicase*

n.a.

-1.789

DR_1089 Dgeo_1620 Krad_0004 Rxyl_0004

RecF protein*

n.a.

-1.342

DR_1105 Dgeo_1212 Krad_0603 Rxyl_2178

DNA repair protein*

2.61

DR_1274 Dgeo_0726 Krad_3054 Rxyl_1323

Holliday junction binding protein^♠

1.88

DR_1354 Dgeo_1124 Krad_2935 Rxyl_2010

Excinuclease ABC, subunit C*

n.a.

-1.411

DR_1477 Dgeo_1194 Krad_3147 Rxyl_1453

DNA repair protein^♠

2.08

DR_1532 Dgeo_0545 Krad_1067 Rxyl_0909

Transcription-repair coupling factor*

3.05

DR_1771 Dgeo_0694 Krad_2940 Rxyl_2016

Excinuclease ABC, subunit A^♠

n.a.

-1.678

DR_1775 Dgeo_0868 Krad_0757 Rxyl_0825

DNA helicase II*

n.a.

-1.450

DR_1916 Dgeo_1139 Krad_1368 Rxyl_1371

DNA helicase RecG*

3.35

DR_1921 Dgeo_0824 Krad_2554 Rxyl_0449

Exonuclease SbcD, putative◆

2.36

DR_1922 Dgeo_0823 Krad_2553 Rxyl_0448

Exonuclease SbcC^♠

1.82

DR_1949 Dgeo_1623 Krad_1405 Rxyl_1394

Ribonuclease HII^♠

n.a.

-1.642

DR_2074 Dgeo_1660 Krad_3154 Rxyl_1309

Putative 3-methyladenine DNA glycosylase♣

3.25

DR_2275 Dgeo_1890 Krad_2942 Rxyl_2021

Excinuclease ABC, subunit B*

n.a.

-1.767

DR_2285 Dgeo_0019 Krad_0599 Rxyl_2229

A/G-specific adenine glycosylase*

1.85

DR_2340 Dgeo_2138 Krad_1492 Rxyl_1423

RecA protein*

n.a.

-1.179

DR_2584 Dgeo_0107 Krad_4325 Rxyl_1215

DNA-3-methyladenine glycosidase II, putative*

n.a.

-1.607