| PPI - iRefIndex |
| UniProt A | UniProt B | Method | PMID | Interaction Type | Edge type | Num Participants |
| P16892 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P43554 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P06782 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P23292 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P05737 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q06631 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P40693 | P53874 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P38691 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| Q05022 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53233 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P40212 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P32327 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P24783 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P20484 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P24783 | P53874 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | Q12460 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | W4YHN9 | enzymatic study | 22072716 | direct interaction | X | 2 |
| P53874 | P40316 | enzymatic study | 22072716 | direct interaction | X | 2 |
| P53874 | P49090 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q06218 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q06205 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P48570 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P38205 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P39744 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q02892 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q12460 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P0C2H8 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P07560 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P25294 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q07478 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P07259 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P13298 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P42945 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q06679 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P41807 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q03161 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q08235 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q12159 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P25368 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P53874 | P40850 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P53874 | P53104 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P14681 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P47116 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | Q12469 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | Q03656 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P23291 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | Q07623 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P38779 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P28007 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | Q06506 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P53874 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P39744 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P17157 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P08458 | pull down | 21460040 | direct interaction | X | 2 |
| P53874 | P28707 | pull down | 21777812 | direct interaction | X | 2 |
| P53874 | P28707 | two hybrid | 21777812 | direct interaction | X | 2 |
| P53874 | P43582 | unspecified method | 16606443 | direct interaction | X | 2 |
| P53874 | P33203 | unspecified method | 16606443 | direct interaction | X | 2 |
| P40055 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P47102 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P15873 | P53874 | affinity chromatography technology | 22829782 | physical association | X | 2 |
| P15873 | P53874 | affinity chromatography technology | 22829782 | physical association | X | 2 |
| P32481 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q12176 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P25635 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P25635 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P25635 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P19454 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P13186 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P32558 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P09232 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| Q12152 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P38911 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P32892 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P07245 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P43586 | P53874 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P33759 | P53874 | affinity chromatography technology | 16429126 | physical association | X | 2 |
| P33759 | P53874 | affinity chromatography technology | 11805826 | physical association | X | 2 |
| P39015 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P50094 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P38622 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P38622 | P53874 | pull down | 21460040 | direct interaction | X | 2 |
| P53131 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q12019 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P22216 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53254 | P53874 | two hybrid | 22902402 | direct interaction | X | 2 |
| P53254 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53254 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P21304 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P52910 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P02294 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P15108 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| Q04491 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P11978 | P53874 | two hybrid | 10490600 | direct interaction | X | 2 |
| P11978 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| Q12499 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q12499 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q02931 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P40494 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P02829 | P53874 | affinity chromatography technology | 15766533 | physical association | X | 2 |
| P39985 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q01560 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P33322 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P10964 | enzymatic study | 22902402 | direct interaction | X | 2 |
| P53874 | P34730 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P33322 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P25694 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P20448 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P32469 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P37303 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P53914 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P23641 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q06106 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P15646 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q08208 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P53261 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P27476 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P40010 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P09938 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P10964 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | Q02326 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P12385 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P23254 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53874 | P25382 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P53874 | P33322 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P53874 | P32581 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P39073 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P32944 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P43637 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P53874 | P36048 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P33750 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P53874 | P00546 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P12954 | P53874 | two hybrid | 15964827 | direct interaction | X | 2 |
| P49723 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P38720 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P54199 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| Q01080 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| Q99383 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P37838 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q01389 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P36009 | P53874 | two hybrid | 22902402 | direct interaction | X | 2 |
| P36009 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q05946 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P36009 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P36009 | P53874 | affinity chromatography technology | 17200106 | physical association | X | 2 |
| P36009 | P53874 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P36009 | P53874 | protein complementation assay | 22615397 | direct interaction | X | 2 |
| P46995 | P53874 | unspecified method | 16606443 | direct interaction | X | 2 |
| P07283 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q12220 | P53874 | protein complementation assay | 18467557 | direct interaction | X | 2 |
| P33442 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P29547 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P28274 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P33892 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P0CX49 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| Q08421 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P43535 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P06244 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P27466 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| Q03532 | P53874 | affinity chromatography technology | 22902402 | physical association | X | 2 |
| P53170 | P53874 | enzymatic study | 16319894 | direct interaction | X | 2 |
| P22696 | P53874 | unspecified method | 16606443 | direct interaction | X | 2 |
| P53317 | P53874 | affinity chromatography technology | 16554755 | physical association | X | 2 |
| P53874 | inferred by author | 16429126 | physical association | C | 24 |
| P53874 | inferred by author | 16429126 | physical association | C | 33 |
| P53874 | inferred by author | 16554755 | association | C | 7 |
| P53874 | tandem affinity purification | 11805826 | association | C | 35 |
| P10592 | P53874 | tandem affinity purification | 16429126 | physical association | X | 2 |
| P10592 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P40693 | P53874 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P24783 | P53874 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P40850 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P25368 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P25368 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P43582 | protein array | 16606443 | direct interaction | X | 2 |
| P53874 | P33203 | protein array | 16606443 | direct interaction | X | 2 |
| P53874 | P28007 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P38779 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P39744 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | Q06506 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | Q07623 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P53874 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P25294 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P43613 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P09435 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P39987 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P33416 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P15992 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P38788 | tandem affinity purification | 19536198 | association | X | 2 |
| P32590 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P47102 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P19454 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P19454 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P19454 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P19454 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P09232 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P43586 | P53874 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P39015 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P10591 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | inferred by author | 16429126 | physical association | C | 31 |
| P53874 | tandem affinity purification | 16429126 | association | C | 41 |
| P32589 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P53254 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53254 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53254 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53254 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53254 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P11484 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P39101 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P15108 | P53874 | affinity chromatography technology | 15766533 | physical association | X | 2 |
| P15108 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P15108 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P15108 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P14906 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P11978 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P11978 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P11978 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| Q02159 | P53874 | two hybrid array | 14690591 | physical association | X | 2 |
| P02829 | P53874 | affinity chromatography technology | 15766533 | physical association | X | 2 |
| P02829 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P53874 | P25382 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P25382 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P33322 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P33322 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | P33750 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P36048 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P53874 | P0CS90 | tandem affinity purification | 19536198 | association | X | 2 |
| Q01080 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P36009 | P53874 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P46995 | P53874 | protein array | 16606443 | direct interaction | X | 2 |
| Q12220 | P53874 | dihydrofolate reductase reconstruction | 18467557 | physical association | X | 2 |
| P40150 | P53874 | tandem affinity purification | 19536198 | association | X | 2 |
| P43535 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P43535 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P22696 | P53874 | protein array | 16606443 | direct interaction | X | 2 |
| P53317 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53317 | P53874 | tandem affinity purification | 16554755 | physical association | X | 2 |
| P53874 | mass spectrometry studies of complexes | 11805826 | - | C | 43 |