| Q1MA32 | HTPX_RHIL3 | Rhizobium leguminosarum bv. viciae (strain 3841) | htpX RL4725 | Detail |
| A1UR06 | HTPX_BARBK | Bartonella bacilliformis (strain ATCC 35685 / NCTC 12138 / KC583) | htpX BARBAKC583_0071 | Detail |
| Q8G6T7 | HTPX_BIFLO | Bifidobacterium longum (strain NCC 2705) | htpX BL0551 | Detail |
| A6Q7D4 | HTPX_SULNB | Sulfurovum sp. (strain NBC37-1) | htpX SUN_0433 | Detail |
| A8I246 | HTPX_AZOC5 | Azorhizobium caulinodans (strain ATCC 43989 / DSM 5975 / JCM 20966 / NBRC 14845 / NCIMB 13405 / ORS 571) | htpX AZC_4701 | Detail |
| P83913 | LIE2_STREX | Streptomyces exfoliatus (Streptomyces hydrogenans) | lieB | Detail |
| O13766 | MDE10_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | mde10 mug139 SPAC17A5.04c | Detail |
| Q3SFQ0 | HTPX_THIDA | Thiobacillus denitrificans (strain ATCC 25259) | htpX Tbd_2603 | Detail |
| B3PJ06 | HTPX_CELJU | Cellvibrio japonicus (strain Ueda107) (Pseudomonas fluorescens subsp. cellulosa) | htpX CJA_0517 | Detail |
| B8FG65 | HTPX_DESAL | Desulfatibacillum aliphaticivorans | htpX Dalk_2050 | Detail |