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RNA polymerase II initiation complex with an 8-nt RNA

Analyse RNA polymerase II initiation complex with an 8-nt RNA in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3S16
Type
protein + DNA + RNA
Length
3,582 residues
Chains
12
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA-directed RNA polymerase II subunit RPB1; DNA-directed RNA polymerase II subunit RPB2…
EC
2.7.7.6
UniProt
P04050, P08518, P16370, P20434, P20435, P20436, P27999, P22139, P38902, P40422
Ligands
ZN, MG
Pockets
20 · best druggability 0.88

Structure

x-ray diffraction · 12 distinct chains · 31% helix, 20% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA-directed RNA polymerase II subunit RPB1 (EC 2.7.7.6)protein140539% helix, 15% strandP04050
BDNA-directed RNA polymerase II subunit RPB2 (EC 2.7.7.6)protein111429% helix, 24% strandP08518
CDNA-directed RNA polymerase II subunit RPB3protein26625% helix, 26% strandP16370
EDNA-directed RNA polymerases I, II, and III subunit RPABC1protein21438% helix, 23% strandP20434
FDNA-directed RNA polymerases I, II, and III subunit RPABC2protein8531% helix, 14% strandP20435
HDNA-directed RNA polymerases I, II, and III subunit RPABC3protein1330% helix, 46% strandP20436
IDNA-directed RNA polymerase II subunit RPB9protein1194% helix, 26% strandP27999
JDNA-directed RNA polymerases I, II, and III subunit RPABC5protein6543% helix, 2% strandP22139
KDNA-directed RNA polymerase II subunit RPB11protein11438% helix, 18% strandP38902
LDNA-directed RNA polymerases I, II, and III subunit RPABC4protein460% helix, 17% strandP40422
RRNA (5'-R(*UP*CP*GP*AP*GP*AP*GP*G)-3')rna8——
TDNA (5'- D(*CP*TP*AP*CP*CP*GP*AP*TP*AP*AP*GP*CP*AP*GP*AP*CP*GP*AP*TP*CP*CP*TP* CP*TP*CP*GP*AP*TP*G)-3')dna13——

Ligands and binding sites

  • ZN · Zinc ion · metal · 8 copies · chains A, B, C, I, J, L
  • MG · Magnesium ion · metal · chains A, R

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
19910.880.90121empty
27860.860.9092empty
36650.840.8863empty
46520.820.8655empty
56180.800.8573empty

Interfaces

26 interfaces between chains.

  • A–B · 9630 Ų buried · 138 hydrogen bonds · protein-protein
  • A–E · 2288 Ų buried · 26 hydrogen bonds · protein-protein
  • C–K · 2216 Ų buried · 23 hydrogen bonds · protein-protein
  • B–C · 1859 Ų buried · 34 hydrogen bonds · protein-protein
  • A–F · 1807 Ų buried · 15 hydrogen bonds · protein-protein

Compared structures

  • 3S16 · RNA Polymerase II Initiation Complex with an 8-nt RNA · the same entry in another collection · chain A against A, TM-score 1.00

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