| PRP19 | S. cerevisiae | PRP19 complex | PSO4 | 56.6 | 195 |
| PRP8 | S. cerevisiae | U5 snRNP | DBF3, DNA39, RNA8, SLT21, USA2 | 279.5 | 176 |
| SNU114 | S. cerevisiae | U5 snRNP | GIN10 | 114.0 | 113 |
| BRR2 | S. cerevisiae | U5 snRNP | PRP44, RSS1, SLT22, SNU246 | 246.2 | 110 |
| CEF1 | S. cerevisiae | PRP19 complex | NTC85 | 67.7 | 72 |
| SYF1 | S. cerevisiae | PRP19 related | NTC90 | 100.2 | 52 |
| CLF1 | S. cerevisiae | PRP19 related | NTC77, SYF3 | 82.4 | 44 |
| CWC22 | S. cerevisiae | Recruited at Bact complex | — | 67.3 | 33 |
| RSE1 | S. cerevisiae | 17S U2 snRNP | — | 153.8 | 32 |
| ECM2 | S. cerevisiae | PRP19 related | SLT11 | 40.9 | 26 |
| PRP22 | S. cerevisiae | Second step factors | — | 130.0 | 24 |
| PRP2 | S. cerevisiae | Recruited at Bact complex | RNA2 | 99.8 | 24 |
| LEA1 | S. cerevisiae | 17S U2 snRNP | — | 27.2 | 22 |
| HSH155 | S. cerevisiae | 17S U2 snRNP | — | 110.0 | 22 |
| PRP46 | S. cerevisiae | PRP19 complex | NTC50 | 50.7 | 20 |
| SNT309 | S. cerevisiae | PRP19 complex | NTC25 | 20.7 | 17 |
| CWC15 | S. cerevisiae | PRP19 complex | — | 19.9 | 16 |
| SYF2 | S. cerevisiae | Recruited at C complex | NTC31 | 24.8 | 14 |
| CDC40 | S. cerevisiae | Second step factors | PRP17, SLT15, SLU4 | 52.0 | 14 |
| ISY1 | S. cerevisiae | PRP19 related | NTC30, UTR3 | 28.0 | 14 |
| PRP9 | S. cerevisiae | 17S U2 snRNP | — | 63.0 | 14 |
| PRP45 | S. cerevisiae | PRP19 related | FUN20 | 42.5 | 13 |
| BUD13 | S. cerevisiae | RES complex | CWC26 | 30.5 | 11 |
| YJU2 | S. cerevisiae | Recruited at Bact complex | CWC16 | 32.3 | 10 |
| SMD2 | S. cerevisiae | Sm | — | 12.9 | 10 |
| CWC2 | S. cerevisiae | PRP19 related | NTC40 | 38.4 | 9 |
| SMB1 | S. cerevisiae | Sm | — | 22.4 | 9 |
| PRP43 | S. cerevisiae | 17S U2 snRNP associated | — | 87.6 | 9 |
| PRP18 | S. cerevisiae | Second step factors | — | 28.4 | 7 |
| SME1 | S. cerevisiae | Sm | — | 10.4 | 7 |
| SMD3 | S. cerevisiae | Sm | SLT16 | 11.2 | 6 |
| HSH49 | S. cerevisiae | 17S U2 snRNP | — | 24.5 | 6 |
| PRP21 | S. cerevisiae | 17S U2 snRNP | SPP91 | 33.1 | 5 |
| SMD1 | S. cerevisiae | Sm | SPP92 | 16.3 | 5 |
| CWC21 | S. cerevisiae | | — | 15.8 | 5 |
| PRP6 | S. cerevisiae | U5 snRNP | RNA6, TSM7269 | 104.2 | 4 |
| BUD31 | S. cerevisiae | PRP19 related | CWC14 | 18.4 | 4 |
| CUS1 | S. cerevisiae | 17S U2 snRNP | — | 50.3 | 4 |
| MSL1 | S. cerevisiae | 17S U2 snRNP | YIB9 | 12.8 | 4 |
| SMX3 | S. cerevisiae | Sm | — | 9.7 | 4 |
| IST3 | S. cerevisiae | RES complex | SNU17 | 17.1 | 3 |
| NTR2 | S. cerevisiae | | — | 36.6 | 2 |
| LSM2 | S. cerevisiae | LSm | SMX5, SNP3 | 11.2 | 2 |
| SLU7 | S. cerevisiae | Second step factors | SLT17 | 44.6 | 2 |
| NTC20 | S. cerevisiae | | — | 16.0 | 2 |
| CWC24 | S. cerevisiae | Recruited at Bact complex | — | 29.7 | 2 |
| PRP11 | S. cerevisiae | 17S U2 snRNP | RNA11 | 29.9 | 2 |
| CWC27 | S. cerevisiae | Recruited at Bact complex | — | 35.0 | 2 |
| SPP382 | S. cerevisiae | Recruited at B complex | CCF8, NTR1 | 83.0 | 2 |
| CWC23 | S. cerevisiae | | — | 33.2 | 2 |
| CWC25 | S. cerevisiae | Recruited at Bact complex | — | 20.4 | 2 |
| PRP38 | S. cerevisiae | Recruited at B complex | — | 28.0 | 2 |
| RDS3 | S. cerevisiae | 17S U2 snRNP | — | 12.3 | 1 |
| CBC2 | S. cerevisiae | | CBP20, MUD13, SAE1 | 23.8 | 1 |
| PML1 | S. cerevisiae | RES complex | — | 23.7 | 1 |
| SPP2 | S. cerevisiae | Recruited at Bact complex | — | 20.6 | 1 |
| YSF3 | S. cerevisiae | 17S U2 snRNP | RCP10 | 10.0 | 1 |
| SMX2 | S. cerevisiae | Sm | SNP2, YFL018W-A | 8.5 | 1 |
