| HNRNPA3 | H. sapiens | hnRNP | 2610510D13Rik, D10S102, FBRNP, HNRPA3, MGC138232 | 39.6 | 20 |
| PRPF8 | H. sapiens | U5 snRNP | HPRP8, PRP8, PRPC8, RP13 | 273.6 | 17 |
| HNRNPA2B1 | H. sapiens | hnRNP | DKFZp779B0244, FLJ22720, HNRNPA2, HNRNPB1, HNRPA2 | 37.4 | 17 |
| HNRNPA1 | H. sapiens | hnRNP | HNRPA1, HNRPA1L3, MGC102835, hnRNP A1, hnRNP-A1 | 38.7 | 16 |
| SF3A1 | H. sapiens | 17S U2 snRNP | PRP21, PRPF21, SAP114, SF3A120 | 88.9 | 16 |
| SRRT | H. sapiens | pre-mRNA/mRNA binding proteins | ARS2, ASR2, MGC126427, serrate | 100.7 | 15 |
| GAPDH | H. sapiens | | G3PD, GAPD, MGC88685 | 36.1 | 15 |
| SF3B1 | H. sapiens | 17S U2 snRNP | Hsh155, MDS, PRP10, PRPF10, SAP155 | 145.8 | 14 |
| SF3B3 | H. sapiens | 17S U2 snRNP | KIAA0017, RSE1, SAP130, SF3b130, STAF130 | 135.6 | 14 |
| HNRNPU | H. sapiens | hnRNP | HNRPU, SAF-A, U21.1, hnRNP U | 90.6 | 13 |
| ACLY | H. sapiens | | ACL, ATPCL, CLATP | 120.8 | 13 |
| HNRNPR | H. sapiens | hnRNP | FLJ25714, HNRPR, hnRNP R, hnRNP-R | 70.9 | 13 |
| DDX17 | H. sapiens | pre-mRNA/mRNA binding proteins | DKFZp761H2016, P72, RH70 | 80.3 | 13 |
| SRRM2 | H. sapiens | SR related | 300-KD, CWF21, Cwc21, DKFZp667L0421, DKFZp686O15166 | 299.6 | 12 |
| SNRNP200 | H. sapiens | U5 snRNP | ASCC3L1, BRR2, FLJ11521, HELIC2, RP33 | 244.5 | 11 |
| PUF60 | H. sapiens | 17S U2 snRNP associated | FIR, FLJ31379, RoBPI, SIAHBP1 | 59.9 | 11 |
| SF3B2 | H. sapiens | 17S U2 snRNP | Cus1, SAP145, SF3B145, SF3b1, SF3b150 | 100.2 | 11 |
| EFTUD2 | H. sapiens | U5 snRNP | DKFZp686E24196, FLJ44695, KIAA0031, MFDM, Snrp116 | 109.4 | 10 |
| HNRNPC | H. sapiens | hnRNP | C1, C2, HNRNP, HNRPC, MGC104306 | 33.7 | 10 |
| SF3A3 | H. sapiens | 17S U2 snRNP | PRP9, PRPF9, SAP61, SF3a60 | 58.8 | 10 |
| HNRNPK | H. sapiens | hnRNP | CSBP, FLJ41122, HNRPK, TUNP | 51.0 | 10 |
| IGF2BP1 | H. sapiens | | CRD-BP, CRDBP, IMP-1, IMP1, VICKZ1 | 63.5 | 9 |
| HNRNPD | H. sapiens | hnRNP | AUF1, AUF1A, HNRPD, P37, hnRNPD0 | 38.4 | 9 |
| HSPA8 | H. sapiens | PRP19 complex | HSC54, HSC70, HSC71, HSP71, HSP73 | 70.9 | 9 |
| SNRPB | H. sapiens | Sm | COD, SNRPB1, Sm-B/B', SmB/B', SmB/SmB' | 24.6 | 9 |
| SART1 | H. sapiens | tri-snRNP | Ara1, HOMS1, MGC2038, SART1259, SNRNP110 | 90.3 | 8 |
| TRA2B | H. sapiens | SR protein | DKFZp686F18120, Htra2-beta, SFRS10, SRFS10, TRA2-BETA | 33.7 | 8 |
| RBMX | H. sapiens | hnRNP | HNRPG, RBMXP1, RBMXRT, RNMX, hnRNP-G | 42.3 | 8 |
| HNRNPL | H. sapiens | hnRNP | FLJ35509, HNRPL, P/OKcl.14, hnRNP-L | 64.1 | 8 |
| SNRNP70 | H. sapiens | U1 snRNP | RNPU1Z, RPU1, SNRP70, Snp1, U1-70K | 51.6 | 8 |
| DHX15 | H. sapiens | 17S U2 snRNP associated | DBP1, DDX15, HRH2, PRP43, PRPF43 | 90.9 | 8 |
| FUS | H. sapiens | hnRNP | ALS6, FUS1, HNRNPP2, POMP75, TLS | 53.4 | 8 |
| SNRPA1 | H. sapiens | 17S U2 snRNP | Lea1 | 28.4 | 8 |
| SNRPD2 | H. sapiens | Sm | SMD2, SNRPD1, Sm-D2 | 13.5 | 8 |
| DDX46 | H. sapiens | 17S U2 snRNP associated | FLJ25329, KIAA0801, MGC9936, PRPF5, Prp5 | 117.4 | 8 |
| PRPF19 | H. sapiens | PRP19 complex | NMP200, PRP19, PSO4, SNEV, UBOX4 | 55.2 | 7 |
| SRSF1 | H. sapiens | SR protein | ASF, FLJ53078, MGC5228, SF2, SF2p33 | 27.7 | 7 |
| TCERG1 | H. sapiens | misc. proteins found irregularly with spliceosomes | CA150, MGC133200, TAF2S, Urn1 | 123.9 | 7 |
| SFPQ | H. sapiens | linked to splicing | DKFZp547C228, DKFZp667K0521, DKFZp686K1282, POMP100, PSF | 76.1 | 7 |
| PLRG1 | H. sapiens | PRP19 complex | Cwc1, MGC110980, PRL1, PRP46, PRPF46 | 57.2 | 7 |
| CWC15 | H. sapiens | PRP19 complex | C11orf5, Cwf15, HSPC148, ORF5, AD-002 | 26.6 | 7 |
| CCAR1 | H. sapiens | Recruited at A complex | MGC44628, RP11-437A18.1 | 132.8 | 7 |
| TUBB6 | H. sapiens | common MS contaminants | HsT1601, MGC132410, MGC4083, TUBB-5 | 49.9 | 7 |
| ILF3 | H. sapiens | | CBTF, DRBF, DRBP76, MMP4, MPHOSPH4 | 95.3 | 7 |
| SF3A2 | H. sapiens | 17S U2 snRNP | PRP11, PRPF11, SAP62, SF3a66 | 49.3 | 7 |
| RBM39 | H. sapiens | pre-mRNA/mRNA binding proteins | CAPER, CAPERalpha, DKFZp781C0423, FLJ44170, FSAP59 | 59.4 | 7 |
| DDX5 | H. sapiens | pre-mRNA/mRNA binding proteins | DKFZp434E109, DKFZp686J01190, G17P1, HLR1, HUMP68 | 69.1 | 7 |
| RBM25 | H. sapiens | Recruited at A complex | MGC105088, MGC117168, NET52, RED120, RNPC7 | 100.2 | 6 |
| SRSF4 | H. sapiens | SR protein | SFRS4, SRP75 | 56.7 | 6 |
| CDC5L | H. sapiens | PRP19 complex | CDC5, CDC5-LIKE, CEF1, KIAA0432, PCDC5RP | 92.3 | 6 |
| SYNCRIP | H. sapiens | hnRNP | FLJ31626, GRY-RBP, GRYRBP, HNRPQ1, NSAP1 | 69.6 | 6 |
| SRSF3 | H. sapiens | SR protein | SFRS3, SRp20 | 19.3 | 6 |
| HNRNPM | H. sapiens | hnRNP | CEAR, DKFZp547H118, HNRNPM4, HNRPM, HNRPM4 | 77.5 | 5 |
| SMU1 | H. sapiens | Recruited at B complex | BWD, DKFZp761L0916, FLJ10805, FLJ10870, FLJ11970 | 57.5 | 5 |
| PCP4 | H. sapiens | | PEP-19 | 6.8 | 5 |
| TUBA4A | H. sapiens | common MS contaminants | FLJ30169, H2-ALPHA, TUBA1 | 49.9 | 5 |
| PTBP1 | H. sapiens | alternative splicing factor | HNRNP-I, HNRNPI, HNRPI, MGC10830, MGC8461 | 57.2 | 5 |
| NCBP1 | H. sapiens | pre-mRNA/mRNA binding proteins | CBP80, MGC2087, NCBP, Sto1 | 91.8 | 5 |
| HNRNPA0 | H. sapiens | hnRNP | HNRPA0 | 30.8 | 5 |
| BUB3 | H. sapiens | | BUB3L, hBUB3 | 37.2 | 5 |
| SNRPD1 | H. sapiens | Sm | HsT2456, SMD1, SNRPD, Sm-D1 | 13.3 | 5 |
| ILF2 | H. sapiens | | MGC8391, NF45, PRO3063 | 43.1 | 5 |
| SNRPG | H. sapiens | Sm | MGC117317, SMG, Sm-G | 8.5 | 5 |
| DNAJC8 | H. sapiens | chaperonin/heat shock | HSPC331, SPF31 | 29.8 | 4 |
| SMC1A | H. sapiens | | CDLS2, DKFZp686L19178, DXS423E, KIAA0178, MGC138332 | 143.2 | 4 |
| EWSR1 | H. sapiens | pre-mRNA/mRNA binding proteins | EWS, bK984G1.4 | 68.5 | 4 |
| PRPF4 | H. sapiens | U4/U6 snRNP | HPRP4, HPRP4P, PRP4, Prp4p | 58.4 | 4 |
| HSP90B1 | H. sapiens | chaperonin/heat shock | ECGP, GP96, GRP94, TRA1 | 92.5 | 4 |
| U2AF1 | H. sapiens | 17S U2 snRNP associated | DKFZp313J1712, FP793, RN, RNU2AF1, U2AF35 | 27.9 | 4 |
| SNRPD3 | H. sapiens | Sm | SMD3, Sm-D3 | 13.9 | 4 |
| ZNF207 | H. sapiens | other rna binding domain containing | DKFZp761N202 | 50.8 | 4 |
| XRCC6 | H. sapiens | | CTC75, CTCBF, G22P1, KU70, ML8 | 69.8 | 4 |
| SRSF6 | H. sapiens | SR protein | B52, FLJ08061, MGC5045, SFRS6, SRP55 | 39.6 | 3 |
| DNAJB1 | H. sapiens | chaperonin/heat shock | HSPF1, Hdj1, Hsp40, RSPH16B, Sis1 | 38.0 | 3 |
| IK | H. sapiens | Recruited at B complex | CSA2, MGC59741, RED | 65.6 | 3 |
| BCAS2 | H. sapiens | PRP19 complex | DAM1, SPF27, Snt309 | 26.1 | 3 |
| SF3B4 | H. sapiens | 17S U2 snRNP | AFD1, Hsh49, MGC10828, SAP49, SF3b49 | 44.4 | 3 |
| ALYREF | H. sapiens | EJC/mRNP | ALY, ALY/REF, BEF, REF, THOC4 | 26.9 | 3 |
| HNRNPH1 | H. sapiens | hnRNP | DKFZp686A15170, HNRPH, HNRPH1, hnRNPH | 49.2 | 3 |
| PCBP2 | H. sapiens | hnRNP | HNRPE2, MGC110998, hnRNP-E2 | 38.6 | 3 |
| SNRNP40 | H. sapiens | U5 snRNP | 40K, FLJ41108, HPRP8BP, MGC1910, PRP8BP | 39.3 | 3 |
| PRPF3 | H. sapiens | U4/U6 snRNP | HPRP3, HPRP3P, PRP3, Prp3p, RP18 | 77.5 | 3 |
| HNRNPAB | H. sapiens | hnRNP | ABBP1, FLJ40338, HNRPAB | 36.2 | 3 |
| DEK | H. sapiens | misc. proteins found irregularly with spliceosomes | D6S231E | 42.7 | 3 |
| SNRPE | H. sapiens | Sm | B-raf, SME, Sm-E | 10.8 | 3 |
| H2AFX | H. sapiens | chromatin-related | H2A.X, H2A/X, H2AX | 15.1 | 3 |
| SRSF7 | H. sapiens | SR protein | 9G8, AAG3, SFRS7 | 27.4 | 3 |
| HNRNPCL1 | H. sapiens | hnRNP | HNRPCL1, RP5-845O24.4 | 32.1 | 3 |
| PRPF40A | H. sapiens | Recruited at A complex | FBP-11, FBP11, FLAF1, FLJ20585, FNBP3 | 108.8 | 3 |
| SRRM1 | H. sapiens | SR related | 160-KD, MGC39488, POP101, SRM160 | 102.3 | 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 |
| EIF4A2 | H. sapiens | translation-related | BM-010, DDX2B, EIF4A, EIF4F, eIF-4A-II | 46.4 | 3 |
| EEF1A1 | H. sapiens | translation-related | CCS-3, CCS3, EE1A1, EEF-1, EEF1A | 50.1 | 3 |
| SREK1 | H. sapiens | SR protein | DKFZp564B176, MGC133045, SFRS12, SRrp508, SRrp86 | 59.4 | 3 |
| SF3B6 | H. sapiens | 17S U2 snRNP | SF3B14, CGI-110, HSPC175, Ht006, P14, SAP14 | 14.6 | 3 |
| SNRPC | H. sapiens | U1 snRNP | FLJ20302, U1C, Yhc1 | 17.4 | 3 |
| SNRPB2 | H. sapiens | 17S U2 snRNP | MGC24807, MGC45309, Msl1 | 25.5 | 3 |
| U2SURP | H. sapiens | 17S U2 snRNP associated | KIAA0332, MGC133197, SR140, fSAPa | 118.3 | 3 |
| SUGP1 | H. sapiens | Recruited at A complex | DKFZp434E2216, F23858, RBP, SF4 | 72.5 | 3 |
| PTBP2 | H. sapiens | alternative splicing factor | FLJ34897, PTB, PTBLP, brPTB, nPTB | 57.5 | 3 |
| LSM2 | H. sapiens | LSm | C6orf28, G7B, YBL026W, snRNP | 10.8 | 3 |
| XRCC5 | H. sapiens | chromatin-related | FLJ39089, KARP-1, KARP1, KU80, KUB2 | 82.7 | 3 |
| CKMT1B | H. sapiens | | CKMT, CKMT1, CKMT1A, UMTCK | 47.0 | 3 |
| WBP11 | H. sapiens | PRP19 complex | DKFZp779M1063, NPWBP, SIPP1, WBP-11 | 70.0 | 3 |
| ZC3H4 | H. sapiens | other rna binding domain containing | C19orf7, KIAA1064 | 140.3 | 3 |
| BCLAF1 | H. sapiens | | BTF, KIAA0164, bK211L9.1 | 106.1 | 3 |
| AQR | H. sapiens | PRP19 related | DKFZp686B23123, IBP160, KIAA0560, fSAP164 | 171.3 | 3 |
| PRPF6 | H. sapiens | U5 snRNP | ANT-1, ANT1, C20orf14, Prp6, TOM | 106.9 | 3 |
| NONO | H. sapiens | linked to splicing | NMT55, NRB54, P54, P54NRB | 54.2 | 3 |
| CHERP | H. sapiens | 17S U2 snRNP associated | DAN16, SCAF6, SRA1 | 103.7 | 3 |
| ZC3H18 | H. sapiens | other rna binding domain containing | FLJ22664, FLJ34530, FLJ36075, NHN1 | 106.4 | 2 |
| HNRPLL | H. sapiens | hnRNP | SRRF, hnRNPLL | 60.1 | 2 |
| PRRC2A | H. sapiens | | BAT2, D6S51, D6S51E, DKFZp686D09175, G2 | 228.9 | 2 |
| FIP1L1 | H. sapiens | | DKFZp586K0717, FLJ33619, Rhe, hFip1 | 66.5 | 2 |
| RBM42 | H. sapiens | other rna binding domain containing | MGC10433 | 50.4 | 2 |
| RBM26 | H. sapiens | other rna binding domain containing | ARRS2, C13orf10, FLJ20957, MGC133295, MGC133296 | 113.6 | 2 |
| TMSB4X | H. sapiens | | FX, PTMB4, TB4X, TMSB4 | 5.1 | 2 |
| HNRNPH2 | H. sapiens | hnRNP | FTP3, HNRPH', HNRPH2, hnRNPH' | 49.3 | 2 |
| MATR3 | H. sapiens | Occasionally detected in C complex | DKFZp686K0542, DKFZp686K23100, KIAA0723, MGC9105, MPD2 | 94.6 | 2 |
| WDR33 | H. sapiens | | FLJ11294, NET14, WDC146 | 145.9 | 2 |
| RBM22 | H. sapiens | PRP19 related | Cwc2, FLJ10290, ZC3H16, fSAP47 | 46.9 | 2 |
| MAPT | H. sapiens | | DDPAC, FLJ31424, FTDP-17, MAPTL, MGC138549 | 78.9 | 2 |
| LSM8 | H. sapiens | LSm | , N(alpha)-acetyltransferase 38, NAA38, NatC auxiliary subunit, FLJ33242, LSM8 | 10.4 | 2 |
| PRPF31 | H. sapiens | U4/U6 snRNP | DKFZp566J153, NY-BR-99, PRP31, RP11 | 55.5 | 2 |
| FNBP4 | H. sapiens | | DKFZp686M14102, DKFZp779I1064, FBP30, FLJ41904, KIAA1014 | 110.3 | 2 |
| KIAA0907 | H. sapiens | | BLOM7, RP11-336K24.1 | 64.8 | 2 |
| EIF4A3 | H. sapiens | EJC/mRNP | DDX48, DKFZp686O16189, KIAA0111, MGC10862, NMP265 | 46.9 | 2 |
| TTI1 | H. sapiens | | KIAA0406, smg-10 | 122.1 | 2 |
| HTATSF1 | H. sapiens | 17S U2 snRNP associated | TAT-SF1, dJ196E23.2 | 85.9 | 2 |
| LSM4 | H. sapiens | LSm | GRP, YER112W | 15.3 | 2 |
| IGF2BP3 | H. sapiens | pre-mRNA/mRNA binding proteins | CT98, DKFZp686F1078, IMP-3, IMP3, KOC1 | 63.7 | 2 |
| PPIH | H. sapiens | U4/U6 snRNP | CYP-20, CYPH, MGC5016, SnuCyp-20, USA-CYP | 19.2 | 2 |
| MAP1B | H. sapiens | | DKFZp686E1099, DKFZp686F1345, FLJ38954, FUTSCH, MAP5 | 270.6 | 2 |
| RBBP4 | H. sapiens | | NURF55, RBAP48 | 47.7 | 2 |
| SMC3 | H. sapiens | | BAM, BMH, CDLS3, CSPG6, HCAP | 141.5 | 2 |
| HSP90AA1 | H. sapiens | chaperonin/heat shock | FLJ31884, HSP86, HSP89A, HSP90A, HSP90N | 84.7 | 2 |
| PDIA3 | H. sapiens | | ER60, ERp57, ERp60, ERp61, GRP57 | 56.8 | 2 |
| DDX23 | H. sapiens | U5 snRNP | MGC8416, PRPF28, U5-100K, U5-100KD, prp28 | 95.6 | 2 |
| PABPN1 | H. sapiens | pre-mRNA/mRNA binding proteins | OPMD, PAB2, PABII, PABP-2, PABP2 | 32.7 | 2 |
| DDX39B | H. sapiens | other rna binding domain containing | BAT1, D6S81E, UAP56 | 49.0 | 2 |
| PRPF4B | H. sapiens | Recruited at B complex | KIAA0536, PR4H, PRP4, PRP4H, PRP4K | 117.0 | 2 |
| HIST1H4D | H. sapiens | chromatin-related | H4/b, H4FB, dJ221C16.9 | 11.4 | 2 |
| SRSF2 | H. sapiens | SR protein | PR264, SC-35, SC35, SFRS2, SFRS2A | 25.5 | 2 |
| ACTA2 | H. sapiens | | AAT6, ACTSA, MYMY5 | 42.0 | 2 |
| CSTF1 | H. sapiens | CSTF | CstF-50, CstFp50 | 48.4 | 2 |
| SNCA | H. sapiens | | MGC110988, NACP, PARK1, PARK4, PD1 | 14.5 | 2 |
| CSDA | H. sapiens | | CSDA1, DBPA, ZONAB | 40.1 | 2 |
| U2AF2 | H. sapiens | 17S U2 snRNP associated | U2AF65 | 53.5 | 2 |
| LUC7L3 | H. sapiens | | CRA, CREAP-1, CROP, LUC7A, OA48-18 | 51.5 | 2 |
| C22orf28 | H. sapiens | | DJ149A16.6, FAAP, HSPC117, RP1-149A16.6 | 55.2 | 2 |
| SF1 | H. sapiens | Recruited at A complex | BBP, D11S636, MBBP, ZFM1, ZNF162 | 68.3 | 2 |
| YBX1 | H. sapiens | pre-mRNA/mRNA binding proteins | BP-8, CSDA2, CSDB, DBPB, MDR-NF1 | 35.9 | 2 |
| C19orf43 | H. sapiens | | MGC2803, fSAP18 | 18.4 | 2 |
| RBM17 | H. sapiens | 17S U2 snRNP associated | DKFZp686F13131, MGC14439, SPF45 | 45.0 | 2 |
| SNRPF | H. sapiens | Sm | SMF, Sm-F, snRNP-F | 9.7 | 2 |