| [B] Prosthecochloris aestuarii (strain DSM 271 / SK 413) | PROA201405 | B4S8T9 | Nuclease |
| [B] Leptothrix cholodnii (strain ATCC 51168 / LMG 8142 / SP-6) | LEPCP02773 | B1XXE5 | Nuclease (SNase domain protein) precursor |
| [B] Azoarcus sp. (strain EbN1) | AZOSE04315 | Q5NX18 | predicted staphylococcal nuclease homologue |
| [B] Desulfotalea psychrophila | DESPS02646 | Q6AJV0 | related to nuclease |
| [B] Campylobacter jejuni | CAMJE00916 | A3YNJ6 | Putative secreted nuclease |
| [B] Campylobacter jejuni (strain RM1221) | CAMJR01023 | Q5HUI1 | identified by similarity to SP:P43270; match to protein family HMM PF00565 thermonuclease family protein |
| [B] Campylobacter jejuni subsp. doylei (strain ATCC BAA-1458 / RM4099 / 269.97) | CAMJD00649 | A7H358 | Thermonuclease family protein |
| [B] Campylobacter jejuni subsp. jejuni serotype O:23/36 (strain 81-176) | CAMJJ00930 | A1VZW8 | thermonuclease family protein identified by match to protein family HMM PF00565 |
| [B] Campylobacter jejuni subsp. jejuni serotype O:6 (strain 81116 / NCTC 11828) | CAMJ800912 | A8FM30 | Thermonuclease family protein |
| [B] Campylobacter lari (strain RM2100 / D67 / ATCC BAA-1060) | CAMLR00529 | B9KFR2 | Thermonuclease family protein |
| [B] Nitrosococcus oceani (strain ATCC 19707 / NCIMB 11848) | NITOC01375 | Q3JB45 | Micrococcal nuclease (SNase-like) |
| [B] Escherichia coli (strain 55989 / EAEC) | ECO5504850 | B7LWY5 | Putative nuclease |
| [B] Escherichia coli (strain UTI89 / UPEC) | ECOUT05189 | Q1R1P4 | hypothetical protein |
| [B] Escherichia coli O157:H7 | ECO5705106 | YFI3_ECO57 | 98 pct identical and equal length to YFI3_ECOLI SW: Q99342 hypothetical protein 15.6 kDa protein in finO 3' region precursor |
| [B] Escherichia coli O157:H7 (strain EC4115 / EHEC) | ECO5E05170 | B5YPH0 | Nuclease homolog |
| [B] Escherichia coli O81 (strain ED1a) | ECO8105079 | B7LIP6 | Putative endonuclease |
| [B] Salmonella newport (strain SL254) | SALNS04622 | A4IV96 | Staphylococcal nuclease domain protein |
| [B] Salmonella paratyphi A (strain AKU_12601) | SALPK04431 | A4V9J6 | Putative nuclease |
| [B] Salmonella typhi | SALTI04695 | Q935J7 | Putative nuclease |
| [B] Shigella boydii serotype 4 (strain Sb227) | SHIBS03809 | Q31SF6 | conserved hypothetical protein |
| [B] Shigella sonnei (strain Ss046) | SHISS03932 | Q3YTE3 | conserved hypothetical protein |
| [B] Legionella pneumophila (strain Corby) | LEGPC00219 | A5IA19 | Putative endonuclease |
| [B] Actinobacillus pleuropneumoniae serotype 3 (strain JL03) | ACTPJ01091 | B0BQ66 | Putative endonuclease |
| [B] Actinobacillus pleuropneumoniae serotype 5b (strain L20) | ACTP201104 | A3N1D0 | Putative micrococcal nuclease (Thermonuclease)- like protein |
| [B] Actinobacillus pleuropneumoniae serotype 7 (strain AP76) | ACTP701160 | B3GY13 | Putative micrococcal nuclease (Thermonuclease)- like protein |
| [B] Haemophilus influenzae | HAEIN01270 | Y1296_HAEIN | Uncharacterized endonuclease HI1296 |
| [B] Haemophilus influenzae (strain 86-028NP) | HAEI801592 | Q4QK49 | Similar to: HI1296, YC96_HAEIN predicted micrococcal nuclease-like protein |
| [B] Haemophilus influenzae (strain PittEE) | HAEIE00742 | A5UBU8 | 7-cyano-7-deazaguanine reductase |
| [B] Haemophilus influenzae (strain PittGG) | HAEIG00249 | A5UF22 | Nuclease |
| [B] Haemophilus somnus (strain 129PT) | HAES100968 | Q0I399 | Hypothetical protein |
| [B] Haemophilus somnus (strain 2336) | HAES201400 | B0UUG1 | Nuclease (SNase domain protein) precursor |
| [B] Mannheimia succiniciproducens (strain MBEL55E) | MANSM01269 | Q65T31 | Micrococcal nuclease (thermonuclease) similarity Hypothetical protein |
| [B] Pseudomonas stutzeri (strain A1501) | PSEU503979 | A4VRX1 | Micrococcal nuclease |
| [B] Akkermansia muciniphila (strain ATCC BAA-835) | AKKM800766 | B2UQ78 | Nuclease (SNase domain protein) precursor |