6QX9
Structure of a human fully-assembled precatalytic spliceosome (pre-B complex).
This is a non-PDB format compatible entry.
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (1) | U1 snRNA | polymer | 164 | 52697.1 | 1 | Homo sapiens | ||
| 2 | B (6) | U6 snRNA | polymer | 106 | 34098.3 | 1 | Homo sapiens | ||
| 3 | C (5O) | U5 small nuclear ribonucleoprotein 40 kDa protein | polymer | 357 | 39359.5 | 1 | UniProt (Q96DI7) Pfam (PF00400) | Homo sapiens (Human) | U5-40K,38 kDa-splicing factor,Prp8-binding protein,hPRP8BP,U5 snRNP-specific 40 kDa protein,WD repeat-containing protein 57 |
| 4 | D (B4) | Splicing factor 3B subunit 4 | polymer | 424 | 44436.6 | 1 | UniProt (Q15427) Pfam (PF00076) | Homo sapiens (Human) | Pre-mRNA-splicing factor SF3b 49 kDa subunit,Spliceosome-associated protein 49,SAP 49 |
| 5 | E, RA, UA, V (13, 53, 23, 43) | Small nuclear ribonucleoprotein Sm D3 | polymer | 126 | 13940.3 | 4 | UniProt (P62318) Pfam (PF01423) | Homo sapiens (Human) | Sm-D3,snRNP core protein D3 |
| 6 | F (4B) | U4/U6 small nuclear ribonucleoprotein Prp4 | polymer | 522 | 58536.1 | 1 | UniProt (O43172) Pfam (PF08799) Pfam (PF00400) | Homo sapiens (Human) | PRP4 homolog,hPrp4,U4/U6 snRNP 60 kDa protein,WD splicing factor Prp4 |
| 7 | EB, G, N, VA (5e, 4e, 1e, 2e) | Small nuclear ribonucleoprotein E | polymer | 92 | 10817.6 | 4 | UniProt (P62304) Pfam (PF01423) | Homo sapiens (Human) | snRNP-E,Sm protein E,SmE |
| 8 | H (I) | AdML pre-mRNA | polymer | 62 | 15279.3 | 1 | Human adenovirus 2 | ||
| 9 | I (1K) | U1 small nuclear ribonucleoprotein 70 kDa | polymer | 437 | 51683.2 | 1 | UniProt (P08621) Pfam (PF12220) Pfam (PF00076) | Homo sapiens (Human) | snRNP70 |
| 10 | J (4C) | U4/U6 small nuclear ribonucleoprotein Prp31 | polymer | 499 | 55529.0 | 1 | UniProt (Q8WWY3) Pfam (PF01798) Pfam (PF09785) | Homo sapiens (Human) | Pre-mRNA-processing factor 31,Serologically defined breast cancer antigen NY-BR-99,U4/U6 snRNP 61 kDa protein,hPrp31 |
| 11 | BA, JA, K, LB (41, 11, 51, 21) | Small nuclear ribonucleoprotein Sm D1 | polymer | 119 | 13310.7 | 4 | UniProt (P62314) Pfam (PF01423) | Homo sapiens (Human) | Sm-D1,Sm-D autoantigen,snRNP core protein D1 |
| 12 | L (R) | RNA-binding protein 42 | polymer | 480 | 50477.9 | 1 | UniProt (Q9BTD8) Pfam (PF00076) | Homo sapiens (Human) | RNA-binding motif protein 42 |
| 13 | HA, M, OA, Y (1f, 2f, 5f, 4f) | Small nuclear ribonucleoprotein F | polymer | 86 | 9734.2 | 4 | UniProt (P62306) Pfam (PF01423) | Homo sapiens (Human) | snRNP-F,Sm protein F,SmF |
| 14 | O (66) | U6 snRNA-associated Sm-like protein LSm6 | polymer | 80 | 9139.6 | 1 | UniProt (P62312) Pfam (PF01423) | Homo sapiens (Human) | |
| 15 | P (X) | U4/U6.U5 small nuclear ribonucleoprotein 27 kDa protein | polymer | 155 | 18915.4 | 1 | UniProt (Q8WVK2) Pfam (PF08648) | Homo sapiens (Human) | U4/U6.U5-27K,Nucleic acid-binding protein RY-1,U4/U6.U5 tri-snRNP-associated 27 kDa protein,27K,U4/U6.U5 tri-snRNP-associated protein 3 |
| 16 | BB, CA, CB, Q (22, 42, 52, 12) | Small nuclear ribonucleoprotein Sm D2 | polymer | 118 | 13551.9 | 4 | UniProt (P62316) Pfam (PF01423) | Homo sapiens (Human) | Sm-D2,snRNP core protein D2 |
| 17 | R (5) | U5 snRNA | polymer | 117 | 37254.9 | 1 | Homo sapiens | ||
| 18 | S (67) | U6 snRNA-associated Sm-like protein LSm7 | polymer | 103 | 11617.4 | 1 | UniProt (Q9UK45) Pfam (PF01423) | Homo sapiens (Human) | |
| 19 | T (62) | U6 snRNA-associated Sm-like protein LSm2 | polymer | 95 | 10847.5 | 1 | UniProt (Q9Y333) Pfam (PF01423) | Homo sapiens (Human) | Protein G7b,Small nuclear ribonuclear protein D homolog,snRNP core Sm-like protein Sm-x5 |
| 20 | U (2B) | U2 small nuclear ribonucleoprotein B'' | polymer | 225 | 25524.4 | 1 | UniProt (P08579) Pfam (PF00076) | Homo sapiens (Human) | U2 snRNP B'' |
| 21 | W (A2) | Splicing factor 3A subunit 2 | polymer | 209 | 24340.7 | 1 | UniProt (Q15428) Pfam (PF12874) Pfam (PF16835) | Homo sapiens (Human) | SF3a66,Spliceosome-associated protein 62,SAP 62 |
| 22 | X (B2) | Splicing factor 3B subunit 2 | polymer | 895 | 100377.8 | 1 | UniProt (Q13435) Pfam (PF02037) Pfam (PF04037) Pfam (PF04046) | Homo sapiens (Human) | Pre-mRNA-splicing factor SF3b 145 kDa subunit,SF3b145,Spliceosome-associated protein 145,SAP 145 |
| 23 | Z (5C) | 116 kDa U5 small nuclear ribonucleoprotein component | polymer | 854 | 95968.0 | 1 | UniProt (Q15029) Pfam (PF00009) Pfam (PF03144) Pfam (PF14492) Pfam (PF03764) Pfam (PF00679) | Homo sapiens (Human) | Elongation factor Tu GTP-binding domain-containing protein 2,SNU114 homolog,hSNU114,U5 snRNP-specific protein,116 kDa,U5-116 kDa |
| 24 | AA (5X) | Probable ATP-dependent RNA helicase DDX23 | polymer | 820 | 95785.1 | 1 | UniProt (Q9BUQ8) Pfam (PF00270) Pfam (PF00271) | Homo sapiens (Human) | 100 kDa U5 snRNP-specific protein,DEAD box protein 23,PRP28 homolog,U5-100kD |
| 25 | DA, JB, MA, SA (1b, 2b, 5b, 4b) | Small nuclear ribonucleoprotein-associated proteins B and B' | polymer | 240 | 24642.1 | 4 | UniProt (P14678) Pfam (PF01423) | Homo sapiens (Human) | snRNP-B,Sm protein B/B',SmB/B' |
| 26 | EA (B5) | Splicing factor 3B subunit 5 | polymer | 86 | 10149.4 | 1 | UniProt (Q9BWJ5) Pfam (PF07189) | Homo sapiens (Human) | SF3b5,Pre-mRNA-splicing factor SF3b 10 kDa subunit |
| 27 | FA (1A) | U1 small nuclear ribonucleoprotein A | polymer | 282 | 31319.5 | 1 | UniProt (P09012) Pfam (PF00076) | Homo sapiens (Human) | U1A |
| 28 | GA (S) | U4/U6.U5 tri-snRNP-associated protein 1 | polymer | 800 | 90414.1 | 1 | UniProt (O43290) Pfam (PF19252) Pfam (PF03343) | Homo sapiens (Human) | SNU66 homolog,hSnu66,Squamous cell carcinoma antigen recognized by T-cells 1,hSART-1,U4/U6.U5 tri-snRNP-associated 110 kDa protein |
| 29 | IA (5J) | Pre-mRNA-processing factor 6 | polymer | 850 | 97004.7 | 1 | Pfam (PF06424) Pfam (PF14559) Pfam (PF13432) UniProt (by SIFTS) (O94906) | Homo sapiens (Human) | |
| 30 | KA (4D) | NHP2-like protein 1 | polymer | 128 | 14191.5 | 1 | UniProt (P55769) Pfam (PF01248) | Homo sapiens (Human) | High mobility group-like nuclear protein 2 homolog 1,OTK27,SNU13 homolog,hSNU13,U4/U6.U5 small nuclear ribonucleoprotein SNU13,U4/U6.U5 tri-snRNP 15.5 kDa protein |
| 31 | LA (63) | U6 snRNA-associated Sm-like protein LSm3 | polymer | 102 | 11859.4 | 1 | UniProt (P62310) Pfam (PF01423) | Homo sapiens (Human) | |
| 32 | NA (2) | U2 snRNA | polymer | 188 | 60170.4 | 1 | Homo sapiens | ||
| 33 | PA (B3) | Splicing factor 3B subunit 3 | polymer | 1217 | 135718.8 | 1 | UniProt (Q15393) Pfam (PF10433) Pfam (PF03178) | Homo sapiens (Human) | Pre-mRNA-splicing factor SF3b 130 kDa subunit,SF3b130,STAF130,Spliceosome-associated protein 130,SAP 130 |
| 34 | HB, MB, QA, ZA (1g, 2g, 5g, 4g) | Small nuclear ribonucleoprotein G | polymer | 76 | 8508.1 | 4 | UniProt (P62308) Pfam (PF01423) | Homo sapiens (Human) | snRNP-G,Sm protein G,SmG |
| 35 | TA (68) | U6 snRNA-associated Sm-like protein LSm8 | polymer | 96 | 10410.6 | 1 | UniProt (O95777) Pfam (PF01423) | Homo sapiens (Human) | |
| 36 | WA (5A) | Pre-mRNA-processing-splicing factor 8 | polymer | 2311 | 271508.3 | 1 | UniProt (Q6P2Q9) Pfam (PF08082) Pfam (PF08083) Pfam (PF10598) Pfam (PF10597) Pfam (PF10596) Pfam (PF12134) Pfam (PF01398) Pfam (PF08084) | Homo sapiens (Human) | 220 kDa U5 snRNP-specific protein,PRP8 homolog,Splicing factor Prp8,p220 |
| 37 | XA (A3) | Splicing factor 3A subunit 3 | polymer | 501 | 58934.8 | 1 | UniProt (Q12874) Pfam (PF12108) Pfam (PF16837) Pfam (PF13297) Pfam (PF11931) | Homo sapiens (Human) | SF3a60,Spliceosome-associated protein 61,SAP 61 |
| 38 | YA (U) | U4/U6.U5 tri-snRNP-associated protein 2 | polymer | 555 | 64408.4 | 1 | UniProt (Q53GS9) Pfam (PF02148) Pfam (PF00443) | Homo sapiens (Human) | Inactive ubiquitin-specific peptidase 39,SAD1 homolog,U4/U6.U5 tri-snRNP-associated 65 kDa protein,65K |
| 39 | AB (5D) | Thioredoxin-like protein 4A | polymer | 142 | 16807.3 | 1 | UniProt (P83876) Pfam (PF02966) | Homo sapiens (Human) | DIM1 protein homolog,Spliceosomal U5 snRNP-specific 15 kDa protein,Thioredoxin-like U5 snRNP protein U5-15kD |
| 40 | DB (64) | U6 snRNA-associated Sm-like protein LSm4 | polymer | 139 | 15375.8 | 1 | UniProt (Q9Y4Z0) Pfam (PF01423) | Homo sapiens (Human) | Glycine-rich protein,GRP |
| 41 | FB (BP) | PHD finger-like domain-containing protein 5A | polymer | 104 | 11644.6 | 1 | UniProt (Q7RTV0) Pfam (PF03660) | Homo sapiens (Human) | PHD finger-like domain protein 5A,Splicing factor 3B-associated 14 kDa protein,SF3b14b |
| 42 | GB (1C) | U1 small nuclear ribonucleoprotein C | polymer | 159 | 17415.7 | 1 | UniProt (P09234) Pfam (PF06220) | Homo sapiens (Human) | U1C |
| 43 | IB (K) | Serine/threonine-protein kinase PRP4 homolog | polymer | 1007 | 117265.0 | 1 | UniProt (Q13523) Pfam (PF00069) | Homo sapiens (Human) | PRP4 kinase,PRP4 pre-mRNA-processing factor 4 homolog |
| 44 | KB (4A) | U4/U6 small nuclear ribonucleoprotein Prp3 | polymer | 683 | 77669.2 | 1 | UniProt (O43395) Pfam (PF01480) Pfam (PF08572) Pfam (PF06544) | Homo sapiens (Human) | Pre-mRNA-splicing factor 3,hPrp3,U4/U6 snRNP 90 kDa protein |
| 45 | NB (4) | U4 snRNA | polymer | 146 | 46997.7 | 1 | Homo sapiens | ||
| 46 | OB (2A) | U2 small nuclear ribonucleoprotein A' | polymer | 255 | 28456.6 | 1 | UniProt (P09661) Pfam (PF14580) | Homo sapiens (Human) | U2 snRNP A' |
| 47 | PB (A1) | Splicing factor 3A subunit 1,Splicing factor 3A subunit 1,Splicing factor 3A subunit 1 | polymer | 647 | 71619.4 | 1 | UniProt (Q15459) Pfam (PF01805) Pfam (PF12230) Pfam (PF00240) | Homo sapiens (Human) | SF3a120,Spliceosome-associated protein 114,SAP 114,SF3a120,Spliceosome-associated protein 114,SAP 114 |
| 48 | QB (65) | U6 snRNA-associated Sm-like protein LSm5 | polymer | 91 | 9945.4 | 1 | UniProt (Q9Y4Y9) Pfam (PF01423) | Homo sapiens (Human) | |
| 49 | RB (5B) | U5 small nuclear ribonucleoprotein 200 kDa helicase | polymer | 2136 | 244823.4 | 1 | UniProt (O75643) Pfam (PF21188) Pfam (PF18149) Pfam (PF00270) Pfam (PF00271) Pfam (PF02889) | Homo sapiens (Human) | Activating signal cointegrator 1 complex subunit 3-like 1,BRR2 homolog,U5 snRNP-specific 200 kDa protein,U5-200KD |
| 50 | SB (B1) | Splicing factor 3B subunit 1 | polymer | 1304 | 146024.9 | 1 | UniProt (O75533) Pfam (PF08920) Pfam (PF22646) | Homo sapiens (Human) | Pre-mRNA-splicing factor SF3b 155 kDa subunit,SF3b155,Spliceosome-associated protein 155,SAP 155 |
| 51 | AC, BC, TB, XB, YB... (BP, 1C, A2, U) | ZINC ION | non-polymer | 65.4 | 6 | Chemie (ZN) | |||
| 52 | UB (5C) | MAGNESIUM ION | non-polymer | 24.3 | 1 | Chemie (MG) | |||
| 53 | VB (5C) | GUANOSINE-5'-TRIPHOSPHATE | non-polymer | 523.2 | 1 | Chemie (GTP) | |||
| 54 | WB (5A) | INOSITOL HEXAKISPHOSPHATE | non-polymer | 660.0 | 1 | Chemie (IHP) |
Sequence modifications
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 71 |
| Total formula weight | 2870022.3 | |
| Non-Polymers* | Number of molecules | 9 |
| Total formula weight | 1600.0 | |
| All* | Total formula weight | 2871622.3 |
