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Table 3 Archaea and archaeal virus class I RNRs and nearest bacterial/phage neighbours*

From: Ribonucleotide reduction - horizontal transfer of a required function spans all three domains

  Organism NCBI acc. nos operon organisation Comment
1 Halomicrobium mukohataei DSM 12286 NrdA: ZP_03875490 5'-nrdR-nrdB-nrdA-3'  
   NrdB: ZP_03875489   
   NrdJ: ZP_03874310   
   NrdR: ZP_03875488   
2 Halorubrum lacusprofundi ATCC 49239 NrdA: YP_002564381 5'-nrdR-nrdB-nrdA-3' Class I on chromosome 2 (NC_012028, 0.5 Mb), class II on chromosome 1 (NC_012029, 2.7 Mb)
   NrdB: YP_002564382   
   NrdJ: YP_002567020   
   NrdR: YP_002564383   
3 Natronomonas pharaonis DSM 2160 NrdA: YP_327711 5'-nrdR-nrdB-nrdA-3' Class I on plasmid (NC_007427), class II on main chromosome (NC_007426)
   NrdB: YP_327710   
   NrdJ: YP_327319   
   NrdR: YP_327708   
4 Halophage AAJ-2005 NrdA: ABB77922 5'-nrdB-nrdA-3'  
   NrdB: ABB77921   
   NrdJ: ABB77927   
5 Salinibacter ruber DSM 13855 NrdA: YP_444285 5'-nrdB-nrdA-3' The NrdA gene contains a group I intron
   NrdB: YP_444284   
   NrdJ: YP_444446   
6 Halobacterium sp. NRC-1 NrdA: NP_280998 5'-nrdA-nrdB-3' Radical Y to F substitution
   NrdB: NP_280997   
   NrdJ: NP_280419   
7 Halobacterium salinarum R1 NrdA: YP_001690130 5'-nrdA-nrdB-3' Radical Y to F substitution
Both subunits identical to Halobacterium sp. NRC-1
   NrdB: YP_001690129   
   NrdJ: YP_001689532   
8 Halogeometricum borinquense DSM 11551 NrdA: ZP_04000564 5'-nrdR-nrdA-nrdB-3' Radical Y to F substitution
   NrdB: ZP_04000565   
   NrdJ: ZP_03999548   
   NrdR: ZP_04000563   
9 Halorhabdus utahensis DSM 12940 NrdA: YP_003131237 5'-nrdR-nrdA-nrdB-3' Radical Y to F substitution
   NrdB: YP_003131236   
   NrdD: YP_003130508   
   NrdG: YP_003130507   
   NrdJ: YP_003130199   
   NrdR: YP_003131238   
10 Natrialba magadii ATCC 43099 NrdA: ZP_03692957 5'-nrdR-nrdA-nrdB-3 Radical Y to F substitution
   NrdB: ZP_03692956   
   NrdJ: ZP_03694849   
   NrdR: ZP_03692958   
11 Chlamydia trachomatis D/UW-3/CX NrdA: NP_220348 5'-nrdR-nrdA-nrdB-3 Radical Y to F substitution
   NrdB: NP_220349   
   NrdR: NP_219916   
  1. *Rows 1-3: archaeal class I RNRs transferred from halophilic bacteria, together with class I RNRs from the salt-tolerant bacterium Salinibacter ruber and a halophage (bold font, rows 4 & 5). Rows 6-10: archaeal class I RNRs that are similar to the sequences from the bacterium Chlamydia trachomatis (bold, row 11).