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Cryo-EM structure of the post-catalytic spliceosome from saccharomyces cerevisiae at 3.6 ångström

Analyse Cryo-EM structure of the post-catalytic spliceosome from saccharomyces… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5YLZ
Type
protein + RNA
Length
9,468 residues
Chains
43
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Pre-mRNA-splicing factor 8; U5 snrna; Pre-mRNA-splicing factor SNU114; U6 snrna…
EC
3.6.4.13, 2.3.2.27
UniProt
P33334, P36048, Q06091, Q04048, Q12309, Q03654, P53277, P25337, P40968, P38241, Q12046, Q12417, Q03772, P28004, Q03375, P53333, P33411, Q02775, P24384, P40018, Q12330, P54999, P40204, P43321, Q02260, Q06217, Q08963, P40567, P32523
Ligands
IHP, GTP, MG, ZN
Pockets
20 · best druggability 0.87

Structure

electron microscopy · 39 distinct chains · 44% helix, 14% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
APre-mRNA-splicing factor 8protein193145% helix, 10% strandP33334
BU5 snrnarna117——
CPre-mRNA-splicing factor SNU114protein87836% helix, 21% strandP36048
DU6 snrnarna103——
EMRNA/INTRON lariatrna62——
FU2 snrnarna91——
GPre-mRNA-splicing factor SNT309protein15676% helix, 0% strandQ06091
HPre-mRNA-splicing factor SYF1protein56280% helix, 0% strandQ04048
IPre-mRNA-splicing factor CLF1protein51774% helix, 0% strandQ12309
JPre-mRNA-splicing factor CEF1protein43272% helix, 0% strandQ03654
KPre-mRNA-splicing factor SYF2protein9668% helix, 6% strandP53277
LPre-mRNA-splicing factor BUD31protein15750% helix, 0% strandP25337
TPre-mRNA-processing factor 17protein3443% helix, 34% strandP40968
MPre-mRNA-splicing factor SLT11protein18524% helix, 14% strandP38241
NPre-mRNA-splicing factor CWC2protein26132% helix, 10% strandQ12046
OPre-mRNA-splicing factor PRP46protein3373% helix, 39% strandQ12417
PPre-mRNA-splicing factor CWC15protein6925% helix, 0% strandQ03772
QPre-mRNA-processing protein 45protein20142% helix, 2% strandP28004
RPre-mRNA-splicing factor CWC21protein270% helix, 11% strandQ03375
SPre-mRNA-splicing factor CWC22protein20764% helix, 0% strandP53333
UPre-mRNA-splicing factor 18protein14870% helix, 1% strandP33411
VPre-mRNA-splicing factor SLU7protein8835% helix, 0% strandQ02775
WPre-mRNA-splicing factor ATP-dependent RNA helicase PRP22 (EC 3.6.4.13)protein70342% helix, 16% strandP24384
aSmall nuclear ribonucleoprotein-associated protein Bprotein804% helix, 50% strandP40018
b, iSmall nuclear ribonucleoprotein Eprotein7519% helix, 41% strandQ12330
c, jSmall nuclear ribonucleoprotein Fprotein7014% helix, 56% strandP54999
d, kSmall nuclear ribonucleoprotein Gprotein690% helix, 46% strandP40204
eSmall nuclear ribonucleoprotein sm D3protein8220% helix, 45% strandP43321
f, mSmall nuclear ribonucleoprotein sm D1protein8215% helix, 46% strandQ02260
gSmall nuclear ribonucleoprotein sm D2protein9423% helix, 40% strandQ06217
hSmall nuclear ribonucleoprotein-associated protein Bprotein784% helix, 51% strandP40018
lSmall nuclear ribonucleoprotein sm D3protein8120% helix, 46% strandP43321
nSmall nuclear ribonucleoprotein sm D2protein650% helix, 55% strandQ06217
oU2 small nuclear ribonucleoprotein a'protein13522% helix, 20% strandQ08963
pU2 small nuclear ribonucleoprotein B''protein8128% helix, 19% strandP40567
qPre-mRNA-processing factor 19 (EC 2.3.2.27)protein12958% helix, 5% strandP32523
rPre-mRNA-processing factor 19 (EC 2.3.2.27)protein12555% helix, 8% strandP32523
sPre-mRNA-processing factor 19 (EC 2.3.2.27)protein12657% helix, 6% strandP32523
tPre-mRNA-processing factor 19 (EC 2.3.2.27)protein12854% helix, 7% strandP32523

Ligands and binding sites

  • IHP · Inositol hexakisphosphate · ligand · chains A
  • GTP · Guanosine-5'-triphosphate · ligand · chains A, C
  • MG · Magnesium ion · metal · 6 copies · chains C, D, E, A
  • ZN · Zinc ion · metal · 6 copies · chains L, M, D, N

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
17780.870.9195empty
26200.870.9276empty
38730.850.8894MG
46980.850.9080empty
56410.850.9059MG

Interfaces

136 interfaces between chains.

  • A–C · 4885 Ų buried · 40 hydrogen bonds · protein-protein
  • A–B · 3415 Ų buried · 54 hydrogen bonds · protein-nucleic
  • A–E · 2562 Ų buried · 39 hydrogen bonds · protein-nucleic
  • A–Q · 2353 Ų buried · 12 hydrogen bonds · protein-protein
  • A–P · 2013 Ų buried · 14 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 1 covalent (covalent ligand).

Compared structures

  • 5YLZ · Cryo-EM Structure of the Post-catalytic Spliceosome from Saccharomyces cerevisiae at 3.6… · the same entry in another collection · chain K against K, TM-score 1.00

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