| [A] Methanocaldococcus jannaschii | METJA00440 | DCD_METJA | dCTP deaminase, dUMP-forming |
| [A] Methanococcus aeolicus (strain Nankai-3 / ATCC BAA-1280) | META301394 | DCD_META3 | Deoxycytidine triphosphate deaminase |
| [A] Methanococcus maripaludis | METMP01426 | DCD_METMP | Probable deoxycytidine triphosphate deaminase |
| [A] Methanococcus maripaludis (strain C5 / ATCC BAA-1333) | METM500152 | DCD_METM5 | Deoxycytidine triphosphate deaminase |
| [A] Methanococcus maripaludis (strain C6 / ATCC BAA-1332) | METM601233 | DCD_METM6 | Deoxycytidine triphosphate deaminase |
| [A] Methanococcus maripaludis (strain C7 / ATCC BAA-1331) | METM700664 | DCD_METM7 | Deoxycytidine triphosphate deaminase |
| [A] Methanococcus vannielii (strain SB / ATCC 35089 / DSM 1224) | METVS00725 | DCD_METVS | Deoxycytidine triphosphate deaminase |
| [A] Methanocorpusculum labreanum (strain ATCC 43576 / DSM 4855 / Z) | METLZ00539 | DCD_METLZ | Hypothetical protein |
| [A] Methanoculleus marisnigri (strain ATCC 35101 / DSM 1498 / JR1) | METMJ00752 | DCD_METMJ | Deoxycytidine triphosphate deaminase |
| [A] Methanospirillum hungatei (strain JF-1 / DSM 864) | METHJ00949 | DCD_METHJ | Deoxycytidine triphosphate deaminase |
| [B] Aquifex aeolicus | AQUAE01115 | DCD_AQUAE | Deoxycytidine triphosphate deaminase |
| [B] Hydrogenobaculum sp. (strain Y04AAS1) | HYDS000555 | DCD_HYDS0 | Deoxycytidine triphosphate deaminase |
| [B] Cytophaga hutchinsonii (strain ATCC 33406 / NCIMB 9469) | CYTH301974 | DCD_CYTH3 | dCTP deaminase (deoxycytidine triphosphate deaminase) |
| [B] Bacillus halodurans | BACHD00362 | DCD_BACHD | deoxycytidine triphosphate deaminase |
| [B] Clostridium acetobutylicum | CLOAB00025 | DCD_CLOAB | Deoxycytidine triphosphate deaminase |
| [B] Clostridium beijerinckii (strain ATCC 51743 / NCIMB 8052) | CLOB804496 | DCD_CLOB8 | Deoxycytidine triphosphate deaminase |
| [B] Clostridium botulinum (strain Alaska E43 / type E3) | CLOBA02313 | DCD_CLOBA | Deoxycytidine triphosphate deaminase |
| [B] Clostridium botulinum (strain Eklund 17B / type B) | CLOBB02569 | DCD_CLOBB | Deoxycytidine triphosphate deaminase |
| [B] Coprothermobacter proteolyticus (strain ATCC 35245 / DSM 5265 / BT) | COPPD00732 | DCD_COPPD | Deoxycytidine triphosphate deaminase |
| [B] Bdellovibrio bacteriovorus | BDEBA02207 | Q6MKH9 | hypothetical protein (dCTP deaminase), deoxycytidine triphosphate deaminase |
| [B] Leptospira biflexa serovar Patoc (strain Patoc 1 / ATCC 23582 / Paris) | LEPBP03161 | DCD_LEPBP | Deoxycytidine triphosphate deaminase |
| [B] Leptospira biflexa serovar Patoc (strain Patoc 1 / Ames) | LEPBA03050 | DCD_LEPBA | dCTP deaminase |
| [B] Leptospira borgpetersenii serovar Hardjo-bovis (strain JB197) | LEPBJ00054 | DCD_LEPBJ | dCTP deaminase cytoplasmic protein |
| [B] Leptospira borgpetersenii serovar Hardjo-bovis (strain L550) | LEPBL02614 | DCD_LEPBL | dCTP deaminase cytoplasmic protein |
| [B] Leptospira interrogans | LEPIN00072 | DCD_LEPIN | Deoxycytidine triphosphate deaminase |
| [B] Leptospira interrogans (serogroup Icterohaemorrhagiae / serovar Copenhageni) | LEPIC00065 | DCD_LEPIC | identified by sequence similarity; putative; ORF located using Blastx/Glimmer; dCTP deaminase deoxycytidine triphosphate deaminase |