5LJ3
Structure of the core of the yeast spliceosome immediately after branching
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (U) | U5 snRNA (small nuclear RNA) | polymer | 179 | 57444.9 | 1 | GenBank (1039022920) | Saccharomyces cerevisiae | |
| 2 | B (E) | Exon 1 (5' exon) of UBC4 pre-mRNA | polymer | 16 | 5170.2 | 1 | Saccharomyces cerevisiae | ||
| 3 | C (I) | Intron of UBC4 pre-mRNA | polymer | 76 | 24109.1 | 1 | GenBank (4718) | Saccharomyces cerevisiae | |
| 4 | D (Z) | U2 snRNA (small nuclear RNA) | polymer | 1175 | 376267.4 | 1 | GenBank (536627) | Saccharomyces cerevisiae | |
| 5 | E (V) | U6 snRNA (small nuclear RNA) | polymer | 112 | 35883.2 | 1 | GenBank (1039022925) | Saccharomyces cerevisiae | |
| 6 | F (A) | Pre-mRNA-splicing factor 8 | polymer | 2413 | 279867.5 | 1 | UniProt (P33334) Pfam (PF08082) Pfam (PF08083) Pfam (PF10598) Pfam (PF10597) Pfam (PF10596) Pfam (PF12134) Pfam (PF08084) | Saccharomyces cerevisiae | |
| 7 | G (D) | Protein CWC16 | polymer | 278 | 32371.1 | 1 | UniProt (P28320) Pfam (PF04502) | Saccharomyces cerevisiae | Yju2 |
| 8 | H (F) | Pre-mRNA-splicing factor CWC25 | polymer | 179 | 20412.5 | 1 | UniProt (P53854) Pfam (PF10197) Pfam (PF12542) | Saccharomyces cerevisiae | Complexed with CEF1 protein 25 |
| 9 | I (C) | Pre-mRNA-splicing factor SNU114 | polymer | 1008 | 114174.0 | 1 | UniProt (P36048) Pfam (PF03764) Pfam (PF00679) Pfam (PF16004) Pfam (PF00009) | Saccharomyces cerevisiae | 114 kDa U5 small nuclear ribonucleoprotein component,Growth inhibitory protein 10 |
| 10 | J (G) | ISY1 | polymer | 235 | 28120.9 | 1 | UniProt (A0A165UGV0) Pfam (PF06246) UniProt (by SIFTS) (P21374) | Saccharomyces cerevisiae | |
| 11 | K (H) | CWC22 | polymer | 591 | 69119.0 | 1 | UniProt (A0A162ERE7) | Saccharomyces cerevisiae | |
| 12 | L (J) | PRP46 | polymer | 451 | 50801.3 | 1 | UniProt (A0A162HKW4) Pfam (PF00400) UniProt (by SIFTS) (Q12417) | Saccharomyces cerevisiae | |
| 13 | M (K) | Pre-mRNA-processing protein 45 | polymer | 379 | 42548.7 | 1 | UniProt (P28004) Pfam (PF02731) | Saccharomyces cerevisiae | |
| 14 | N (L) | Pre-mRNA-splicing factor BUD31 | polymer | 157 | 18484.5 | 1 | UniProt (P25337) Pfam (PF01125) | Saccharomyces cerevisiae | Bud site selection protein 31,Complexed with CEF1 protein 14 |
| 15 | O (M) | CWC2 | polymer | 339 | 38458.5 | 1 | UniProt (A0A162HWE4) Pfam (PF16131) Pfam (PF00076) UniProt (by SIFTS) (Q12046) | Saccharomyces cerevisiae | |
| 16 | P (N) | Pre-mRNA-splicing factor SLT11 | polymer | 364 | 40988.6 | 1 | UniProt (P38241) Pfam (PF21369) | Saccharomyces cerevisiae | Extracellular mutant protein 2,Synthetic lethality with U2 protein 11, Ecm2 |
| 17 | Q (O) | CEF1 | polymer | 590 | 67819.8 | 1 | UniProt (A0A165TLN2) Pfam (PF00249) Pfam (PF11831) UniProt (by SIFTS) (Q03654) | Saccharomyces cerevisiae | |
| 18 | R (P) | CWC15 | polymer | 175 | 19970.2 | 1 | UniProt (A0A162GIZ3) Pfam (PF04889) UniProt (by SIFTS) (Q03772) | Saccharomyces cerevisiae | |
| 19 | S (R) | Pre-mRNA-splicing factor CWC21 | polymer | 135 | 15793.6 | 1 | UniProt (Q03375) Pfam (PF08312) | Saccharomyces cerevisiae | Complexed with CEF1 protein 21 |
| 20 | T (S) | CLF1 | polymer | 687 | 82532.9 | 1 | UniProt (A0A165TU20) Pfam (PF05843) UniProt (by SIFTS) (Q12309) | Saccharomyces cerevisiae | |
| 21 | U (T) | SYF1 | polymer | 859 | 100356.1 | 1 | UniProt (A0A165VVY6) Pfam (PF05843) UniProt (by SIFTS) (Q04048) | Saccharomyces cerevisiae (Baker's yeast) | |
| 22 | EA, V (b, k) | Small nuclear ribonucleoprotein-associated protein B | polymer | 196 | 22427.0 | 2 | UniProt (P40018) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | snRNP-B,Sm protein B,SmB |
| 23 | HA, W (d, n) | Small nuclear ribonucleoprotein Sm D3 | polymer | 101 | 11240.1 | 2 | UniProt (P43321) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | Sm-D3,snRNP core protein D3 |
| 24 | IA, X (e, p) | Small nuclear ribonucleoprotein E | polymer | 94 | 10385.1 | 2 | UniProt (Q12330) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | snRNP-E,Sm protein E,SmE |
| 25 | JA, Y (f, q) | Small nuclear ribonucleoprotein F | polymer | 86 | 9669.9 | 2 | UniProt (P54999) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | snRNP-F,Sm protein F,SmF |
| 26 | KA, Z (g, r) | Small nuclear ribonucleoprotein G | polymer | 77 | 8490.8 | 2 | UniProt (P40204) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | snRNP-G,Sm protein G,SmG |
| 27 | AA, FA (h, l) | Small nuclear ribonucleoprotein Sm D1 | polymer | 146 | 16296.8 | 2 | UniProt (Q02260) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | Sm-D1,snRNP core protein D1 |
| 28 | BA, GA (j, m) | Small nuclear ribonucleoprotein Sm D2 | polymer | 110 | 12876.1 | 2 | UniProt (Q06217) Pfam (PF01423) | Saccharomyces cerevisiae (Baker's yeast) | Sm-D2,snRNP core protein D2 |
| 29 | CA (W) | U2 small nuclear ribonucleoprotein A' | polymer | 238 | 27232.3 | 1 | UniProt (Q08963) Pfam (PF14580) | Saccharomyces cerevisiae (Baker's yeast) | U2 snRNP A',Looks exceptionally like U2A protein 1 |
| 30 | DA (Y) | U2 small nuclear ribonucleoprotein B'' | polymer | 111 | 12850.9 | 1 | UniProt (P40567) Pfam (PF13893) | Saccharomyces cerevisiae (Baker's yeast) | U2 snRNP B'' |
| 31 | LA (x) | unknown | polymer | 132 | 11251.9 | 1 | Saccharomyces cerevisiae (Baker's yeast) | ||
| 32 | MA, NA (E, V) | MAGNESIUM ION | non-polymer | 24.3 | 2 | Chemie (MG) | |||
| 33 | OA, QA, RA, SA, TA... (D, L, M, N) | ZINC ION | non-polymer | 65.4 | 7 | Chemie (ZN) | |||
| 34 | PA (C) | GUANOSINE-5'-TRIPHOSPHATE | non-polymer | 523.2 | 1 | Chemie (GTP) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 38 |
| Total formula weight | 1754800.6 | |
| Non-Polymers* | Number of molecules | 10 |
| Total formula weight | 1029.7 | |
| All* | Total formula weight | 1755830.3 |
