| HNRNPU | H. sapiens | hnRNP | HNRPU, SAF-A, U21.1, hnRNP U | 90.6 | 60 |
| ACLY | H. sapiens | | ACL, ATPCL, CLATP | 120.8 | 45 |
| SRRT | H. sapiens | pre-mRNA/mRNA binding proteins | ARS2, ASR2, MGC126427, serrate | 100.7 | 39 |
| SF3B1 | H. sapiens | 17S U2 snRNP | Hsh155, MDS, PRP10, PRPF10, SAP155 | 145.8 | 26 |
| NCBP1 | H. sapiens | pre-mRNA/mRNA binding proteins | CBP80, MGC2087, NCBP, Sto1 | 91.8 | 25 |
| HNRNPA1 | H. sapiens | hnRNP | HNRPA1, HNRPA1L3, MGC102835, hnRNP A1, hnRNP-A1 | 38.7 | 23 |
| SNRNP70 | H. sapiens | U1 snRNP | RNPU1Z, RPU1, SNRP70, Snp1, U1-70K | 51.6 | 23 |
| SF3B2 | H. sapiens | 17S U2 snRNP | Cus1, SAP145, SF3B145, SF3b1, SF3b150 | 100.2 | 23 |
| HNRNPD | H. sapiens | hnRNP | AUF1, AUF1A, HNRPD, P37, hnRNPD0 | 38.4 | 21 |
| FUS | H. sapiens | hnRNP | ALS6, FUS1, HNRNPP2, POMP75, TLS | 53.4 | 20 |
| DDX46 | H. sapiens | 17S U2 snRNP associated | FLJ25329, KIAA0801, MGC9936, PRPF5, Prp5 | 117.4 | 19 |
| SF3A1 | H. sapiens | 17S U2 snRNP | PRP21, PRPF21, SAP114, SF3A120 | 88.9 | 19 |
| HNRNPA2B1 | H. sapiens | hnRNP | DKFZp779B0244, FLJ22720, HNRNPA2, HNRNPB1, HNRPA2 | 37.4 | 17 |
| HNRNPR | H. sapiens | hnRNP | FLJ25714, HNRPR, hnRNP R, hnRNP-R | 70.9 | 16 |
| CSDA | H. sapiens | | CSDA1, DBPA, ZONAB | 40.1 | 16 |
| SYNCRIP | H. sapiens | hnRNP | FLJ31626, GRY-RBP, GRYRBP, HNRPQ1, NSAP1 | 69.6 | 15 |
| GAPDH | H. sapiens | | G3PD, GAPD, MGC88685 | 36.1 | 15 |
| SNRPB | H. sapiens | Sm | COD, SNRPB1, Sm-B/B', SmB/B', SmB/SmB' | 24.6 | 14 |
| HNRNPC | H. sapiens | hnRNP | C1, C2, HNRNP, HNRPC, MGC104306 | 33.7 | 13 |
| ILF3 | H. sapiens | | CBTF, DRBF, DRBP76, MMP4, MPHOSPH4 | 95.3 | 13 |
| HSPA8 | H. sapiens | PRP19 complex | HSC54, HSC70, HSC71, HSP71, HSP73 | 70.9 | 13 |
| SRSF4 | H. sapiens | SR protein | SFRS4, SRP75 | 56.7 | 11 |
| HNRNPA3 | H. sapiens | hnRNP | 2610510D13Rik, D10S102, FBRNP, HNRPA3, MGC138232 | 39.6 | 11 |
| SNRPD2 | H. sapiens | Sm | SMD2, SNRPD1, Sm-D2 | 13.5 | 10 |
| SNRPD3 | H. sapiens | Sm | SMD3, Sm-D3 | 13.9 | 10 |
| ZC3H4 | H. sapiens | other rna binding domain containing | C19orf7, KIAA1064 | 140.3 | 10 |
| HNRNPAB | H. sapiens | hnRNP | ABBP1, FLJ40338, HNRPAB | 36.2 | 9 |
| ZC3H18 | H. sapiens | other rna binding domain containing | FLJ22664, FLJ34530, FLJ36075, NHN1 | 106.4 | 9 |
| RBM25 | H. sapiens | Recruited at A complex | MGC105088, MGC117168, NET52, RED120, RNPC7 | 100.2 | 9 |
| SF3A3 | H. sapiens | 17S U2 snRNP | PRP9, PRPF9, SAP61, SF3a60 | 58.8 | 9 |
| YBX1 | H. sapiens | pre-mRNA/mRNA binding proteins | BP-8, CSDA2, CSDB, DBPB, MDR-NF1 | 35.9 | 9 |
| SRSF1 | H. sapiens | SR protein | ASF, FLJ53078, MGC5228, SF2, SF2p33 | 27.7 | 8 |
| DNAJB1 | H. sapiens | chaperonin/heat shock | HSPF1, Hdj1, Hsp40, RSPH16B, Sis1 | 38.0 | 8 |
| U2SURP | H. sapiens | 17S U2 snRNP associated | KIAA0332, MGC133197, SR140, fSAPa | 118.3 | 8 |
| PUF60 | H. sapiens | 17S U2 snRNP associated | FIR, FLJ31379, RoBPI, SIAHBP1 | 59.9 | 8 |
| SF3B3 | H. sapiens | 17S U2 snRNP | KIAA0017, RSE1, SAP130, SF3b130, STAF130 | 135.6 | 8 |
| SRSF3 | H. sapiens | SR protein | SFRS3, SRp20 | 19.3 | 8 |
| DDX17 | H. sapiens | pre-mRNA/mRNA binding proteins | DKFZp761H2016, P72, RH70 | 80.3 | 8 |
| NCBP2 | H. sapiens | pre-mRNA/mRNA binding proteins | CBC2, CBP20, NIP1, PIG55 | 18.0 | 8 |
| HNRNPA0 | H. sapiens | hnRNP | HNRPA0 | 30.8 | 7 |
| SF1 | H. sapiens | Recruited at A complex | BBP, D11S636, MBBP, ZFM1, ZNF162 | 68.3 | 7 |
| SNRPD1 | H. sapiens | Sm | HsT2456, SMD1, SNRPD, Sm-D1 | 13.3 | 7 |
| SNRPC | H. sapiens | U1 snRNP | FLJ20302, U1C, Yhc1 | 17.4 | 7 |
| BUB3 | H. sapiens | | BUB3L, hBUB3 | 37.2 | 6 |
| DHX15 | H. sapiens | 17S U2 snRNP associated | DBP1, DDX15, HRH2, PRP43, PRPF43 | 90.9 | 6 |
| RBM39 | H. sapiens | pre-mRNA/mRNA binding proteins | CAPER, CAPERalpha, DKFZp781C0423, FLJ44170, FSAP59 | 59.4 | 6 |
| HNRNPL | H. sapiens | hnRNP | FLJ35509, HNRPL, P/OKcl.14, hnRNP-L | 64.1 | 6 |
| SNRPA | H. sapiens | U1 snRNP | Mud1, U1-A, U1A | 31.3 | 6 |
| SNRPA1 | H. sapiens | 17S U2 snRNP | Lea1 | 28.4 | 6 |
| CCAR1 | H. sapiens | Recruited at A complex | MGC44628, RP11-437A18.1 | 132.8 | 6 |
| HNRPDL | H. sapiens | hnRNP | HNRNP, JKTBP, JKTBP2, laAUF1 | 46.4 | 6 |
| SNRPG | H. sapiens | Sm | MGC117317, SMG, Sm-G | 8.5 | 6 |
| HNRNPCL1 | H. sapiens | hnRNP | HNRPCL1, RP5-845O24.4 | 32.1 | 5 |
| C19orf43 | H. sapiens | | MGC2803, fSAP18 | 18.4 | 5 |
| HTATSF1 | H. sapiens | 17S U2 snRNP associated | TAT-SF1, dJ196E23.2 | 85.9 | 5 |
| ZNF207 | H. sapiens | other rna binding domain containing | DKFZp761N202 | 50.8 | 5 |
| RALY | H. sapiens | hnRNP | HNRPCL2, MGC117312, P542 | 32.5 | 5 |
| SREK1 | H. sapiens | SR protein | DKFZp564B176, MGC133045, SFRS12, SRrp508, SRrp86 | 59.4 | 5 |
| HMGB2 | H. sapiens | | HMG2 | 24.0 | 4 |
| SMC1A | H. sapiens | | CDLS2, DKFZp686L19178, DXS423E, KIAA0178, MGC138332 | 143.2 | 4 |
| IGF2BP1 | H. sapiens | | CRD-BP, CRDBP, IMP-1, IMP1, VICKZ1 | 63.5 | 4 |
| ILF2 | H. sapiens | | MGC8391, NF45, PRO3063 | 43.1 | 4 |
| DHX36 | H. sapiens | other rna binding domain containing | DDX36, G4R1, KIAA1488, MLEL1, RHAU | 114.8 | 4 |
| TUBA4A | H. sapiens | common MS contaminants | FLJ30169, H2-ALPHA, TUBA1 | 49.9 | 4 |
| DNAJC8 | H. sapiens | chaperonin/heat shock | HSPC331, SPF31 | 29.8 | 4 |
| PRPF38B | H. sapiens | misc. proteins found irregularly with spliceosomes | FLJ10330, MGC163218, MGC41809, NET1, RP11-293A10.1 | 64.5 | 4 |
| RDBP | H. sapiens | | D6S45, NELF-E, RD, RDP | 43.2 | 3 |
| HNRNPK | H. sapiens | hnRNP | CSBP, FLJ41122, HNRPK, TUNP | 51.0 | 3 |
| SRSF11 | H. sapiens | SR protein | DKFZp686M13204, FLJ18226, NET2, SFRS11, dJ677H15.2 | 53.5 | 3 |
| LUC7L2 | H. sapiens | | CGI-59, CGI-74, FLJ10657, LUC7B2 | 46.5 | 3 |
| U2AF2 | H. sapiens | 17S U2 snRNP associated | U2AF65 | 53.5 | 3 |
| SF3A2 | H. sapiens | 17S U2 snRNP | PRP11, PRPF11, SAP62, SF3a66 | 49.3 | 3 |
| ELAVL1 | H. sapiens | alternative splicing factor | ELAV1, HUR, Hua, MelG | 36.1 | 3 |
| RBMX | H. sapiens | hnRNP | HNRPG, RBMXP1, RBMXRT, RNMX, hnRNP-G | 42.3 | 3 |
| SNRPF | H. sapiens | Sm | SMF, Sm-F, snRNP-F | 9.7 | 3 |
| PRPF40A | H. sapiens | Recruited at A complex | FBP-11, FBP11, FLAF1, FLJ20585, FNBP3 | 108.8 | 2 |
| PHF5A | H. sapiens | 17S U2 snRNP | INI, MGC1346, Rds3, SAP14b, SF3b14b | 12.4 | 2 |
| SF3B6 | H. sapiens | 17S U2 snRNP | SF3B14, CGI-110, HSPC175, Ht006, P14, SAP14 | 14.6 | 2 |
| SRSF6 | H. sapiens | SR protein | B52, FLJ08061, MGC5045, SFRS6, SRP55 | 39.6 | 2 |
| LUC7L3 | H. sapiens | | CRA, CREAP-1, CROP, LUC7A, OA48-18 | 51.5 | 2 |
| SNRPE | H. sapiens | Sm | B-raf, SME, Sm-E | 10.8 | 2 |
| HMGA1 | H. sapiens | | HMG-R, HMGA1A, HMGIY, MGC12816, MGC4242 | 11.7 | 2 |
| PHAX | H. sapiens | | FLJ13193, RNUXA | 44.4 | 2 |
| RBBP4 | H. sapiens | | NURF55, RBAP48 | 47.7 | 2 |
| MAP1B | H. sapiens | | DKFZp686E1099, DKFZp686F1345, FLJ38954, FUTSCH, MAP5 | 270.6 | 2 |
| HSPB1 | H. sapiens | chaperonin/heat shock | CMT2F, DKFZp586P1322, HMN2B, HS.76067, HSP27 | 22.8 | 2 |
| EWSR1 | H. sapiens | pre-mRNA/mRNA binding proteins | EWS, bK984G1.4 | 68.5 | 2 |
| SFPQ | H. sapiens | linked to splicing | DKFZp547C228, DKFZp667K0521, DKFZp686K1282, POMP100, PSF | 76.1 | 2 |
| HNRNPH1 | H. sapiens | hnRNP | DKFZp686A15170, HNRPH, HNRPH1, hnRNPH | 49.2 | 2 |
| SRSF2 | H. sapiens | SR protein | PR264, SC-35, SC35, SFRS2, SFRS2A | 25.5 | 2 |
| EIF4A2 | H. sapiens | translation-related | BM-010, DDX2B, EIF4A, EIF4F, eIF-4A-II | 46.4 | 2 |
| CPSF7 | H. sapiens | CPSF | CFIm59, FLJ12529, FLJ39024, MGC9315 | 52.0 | 2 |