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Cryo-EM structure of the Catalytic Step II spliceosome (C* complex) at 4.0 angstrom resolution

Analyse Cryo-EM structure of the Catalytic Step II spliceosome (C* complex) at 4.0… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5WSG
Type
protein + RNA
Length
9,866 residues
Chains
45
Method
electron microscopy
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
4.0
Source
Saccharomyces cerevisiae (strain ATCC 204508 / S288c); Saccharomyces cerevisiae…
Molecule
Pre-mRNA-splicing factor 8; Pre-mRNA-splicing factor SNU114; Pre-mRNA-splicing factor…
EC
6.3.2.-, 3.6.4.13
UniProt
P33334, P36048, Q03375, Q12417, P28004, P38241, Q12046, Q03772, P25337, P53333, Q03654, Q12309, P53277, Q04048, P40968, P32523, Q06091, P40018, Q12330, P54999, P40204, P43321, Q02260, Q06217, P40567, Q08963, P15938, P33411
Ligands
GTP, MG, ZN
Pockets
20 · best druggability 0.87

Structure

electron microscopy · resolution 4.0 · 40 distinct chains · 43% helix, 15% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
APre-mRNA-splicing factor 8protein193145% helix, 9% strandP33334
CPre-mRNA-splicing factor SNU114protein87835% helix, 21% strandP36048
JPre-mRNA-splicing factor CWC21protein270% helix, 11% strandQ03375
OPre-mRNA-splicing factor PRP46protein3373% helix, 40% strandQ12417
PPre-mRNA-processing protein 45protein20141% helix, 1% strandP28004
QPre-mRNA-splicing factor SLT11protein18524% helix, 14% strandP38241
RPre-mRNA-splicing factor CWC2protein26131% helix, 10% strandQ12046
SPre-mRNA-splicing factor CWC15protein6925% helix, 0% strandQ03772
TPre-mRNA-splicing factor BUD31protein15750% helix, 0% strandP25337
ZPre-mRNA-splicing factor CWC22protein44764% helix, 0% strandP53333
B5'-exonrna13——
N5'-intron-lariatrna15——
DU5 snRNArna117——
ESaccharomyces cerevisiae S288c SNR6 snRNArna103——
LRNA (91-mer)rna91——
M3'-intron-lariatrna23——
cPre-mRNA-splicing factor CEF1,Pre-mRNA-splicing factor CEF1,Cef1,Pre-mRNA-splicing factor CEF1protein43672% helix, 0% strandQ03654
dPre-mRNA-splicing factor CLF1,Pre-mRNA-splicing factor CLF1,Clf1protein53273% helix, 0% strandQ12309
IPre-mRNA-splicing factor SYF2protein10266% helix, 6% strandP53277
vSyf1,Pre-mRNA-splicing factor SYF1,Syf1,Pre-mRNA-splicing factor SYF1,Syf1,Pre-mRNA-splicing factor SYF1,Syf1protein59381% helix, 0% strandQ04048
nPre-mRNA-processing factor 17protein2964% helix, 41% strandP40968
oPre-mRNA-processing factor 19 (EC 6.3.2.-)protein12657% helix, 6% strandP32523
pPre-mRNA-processing factor 19 (EC 6.3.2.-)protein12854% helix, 7% strandP32523
qPre-mRNA-processing factor 19 (EC 6.3.2.-)protein38720% helix, 36% strandP32523
rPre-mRNA-processing factor 19 (EC 6.3.2.-)protein12555% helix, 8% strandP32523
tPre-mRNA-splicing factor SNT309protein15676% helix, 0% strandQ06091
kSmall nuclear ribonucleoprotein-associated protein Bprotein804% helix, 50% strandP40018
i, GSmall nuclear ribonucleoprotein Eprotein7519% helix, 41% strandQ12330
h, HSmall nuclear ribonucleoprotein Fprotein7014% helix, 56% strandP54999
j, KSmall nuclear ribonucleoprotein Gprotein690% helix, 46% strandP40204
l, USmall nuclear ribonucleoprotein Sm D3protein8220% helix, 45% strandP43321
m, VSmall nuclear ribonucleoprotein Sm D1protein8215% helix, 46% strandQ02260
gSmall nuclear ribonucleoprotein Sm D2protein9423% helix, 40% strandQ06217
FSmall nuclear ribonucleoprotein-associated protein Bprotein784% helix, 51% strandP40018
WSmall nuclear ribonucleoprotein Sm D2protein650% helix, 55% strandQ06217
XU2 small nuclear ribonucleoprotein B''protein8128% helix, 19% strandP40567
YU2 small nuclear ribonucleoprotein A'protein13522% helix, 20% strandQ08963
b3'-exon-intronrna14——
ePre-mRNA-splicing factor ATP-dependent RNA helicase PRP16 (EC 3.6.4.13)protein67941% helix, 15% strandP15938
fPre-mRNA-splicing factor 18protein14870% helix, 1% strandP33411

Ligands and binding sites

  • GTP · Guanosine-5'-triphosphate · ligand · chains A, C
  • MG · Magnesium ion · metal · 6 copies · chains C, B, E, b, A
  • ZN · Zinc ion · metal · 6 copies · chains Q, R, E, T

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

20 pockets found on a 1 Å grid, 20 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
18620.870.89106empty
28160.860.8993empty
39100.860.8887empty
49610.860.8796empty
56920.850.8977empty

Interfaces

144 interfaces between chains.

  • A–C · 4891 Ų buried · 41 hydrogen bonds · protein-protein
  • A–D · 3622 Ų buried · 64 hydrogen bonds · protein-nucleic
  • A–P · 2275 Ų buried · 10 hydrogen bonds · protein-protein
  • c–d · 2031 Ų buried · 25 hydrogen bonds · protein-protein
  • A–S · 2014 Ų buried · 17 hydrogen bonds · protein-protein

Compared structures

  • 5WSG · Cryo-EM structure of the catalytic step II spliceosome (C* complex) at 4.0 ångström… · the same entry in another collection · chain K against K, TM-score 1.00

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