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Cryo-EM structure of human MLL1-ncp complex, binding MODE1

Analyse Cryo-EM structure of human MLL1-ncp complex, binding MODE1 in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6KIX
Type
protein + DNA
Length
2,052 residues
Chains
14
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Histone H3; Histone H4; Histone H2A; Histone H2B 1.1; DNA (145-mer)…
EC
2.1.1.43
UniProt
A0A310TTQ1, P62799, Q6AZJ8, P02281, Q15291, Q03164, P61964, Q9UBL3
Ligands
SAH, ZN
Pockets
20 · best druggability 0.82

Structure

electron microscopy · 13 distinct chains · 26% helix, 19% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, EHistone H3protein9765% helix, 2% strandA0A310TTQ1
BHistone H4protein8059% helix, 6% strandP62799
CHistone H2Aprotein10746% helix, 3% strandQ6AZJ8
DHistone H2B 1.1protein9472% helix, 2% strandP02281
FHistone H4protein7865% helix, 4% strandP62799
GHistone H2Aprotein10550% helix, 7% strandQ6AZJ8
HHistone H2B 1.1protein9573% helix, 4% strandP02281
IDNA (145-mer)dna145——
JDNA (145-mer)dna145——
NRetinoblastoma-binding protein 5protein3521% helix, 30% strandQ15291
KHistone-lysine N-methyltransferase 2A (EC 2.1.1.43)protein18115% helix, 17% strandQ03164
RWd repeat-containing protein 5protein3000% helix, 39% strandP61964
TSET1/ASH2 histone methyltransferase complex subunit ASH2protein1762% helix, 24% strandQ9UBL3

Ligands and binding sites

  • SAH · S-adenosyl-L-homocysteine · ligand · chains K
  • ZN · Zinc ion · metal · chains K

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
12230.820.9443empty
29880.800.8269empty
38080.770.8070empty
45780.760.8360empty
510660.760.7976empty

Interfaces

50 interfaces between chains.

  • I–J · 6713 Ų buried · 537 hydrogen bonds · nucleic-nucleic
  • G–H · 2606 Ų buried · 14 hydrogen bonds · protein-protein
  • C–D · 2590 Ų buried · 14 hydrogen bonds · protein-protein
  • A–B · 2499 Ų buried · 11 hydrogen bonds · protein-protein
  • E–F · 2478 Ų buried · 9 hydrogen bonds · protein-protein

Modifications

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

Compared structures

  • 6KIX · Cryo-EM structure of human MLL1-NCP complex, binding mode1 · the same entry in another collection · chain R against R, TM-score 1.00

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