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Crystal structure of CLK1 in complex with cx-4945

Analyse Crystal structure of CLK1 in complex with cx-4945 in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6KHD
Type
protein
Length
979 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Dual specificity protein kinase CLK1
EC
2.7.12.1
UniProt
P49759
Ligands
3NG
Pockets
10 · best druggability 0.80

Structure

x-ray diffraction · 3 distinct chains · 38% helix, 19% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADual specificity protein kinase CLK1 (EC 2.7.12.1)protein32239% helix, 19% strandP49759
BDual specificity protein kinase CLK1 (EC 2.7.12.1)protein33237% helix, 20% strandP49759
CDual specificity protein kinase CLK1 (EC 2.7.12.1)protein32538% helix, 19% strandP49759

Ligands and binding sites

  • 3NG · 5-[(3-chlorophenyl)amino]benzo[c][2,6]naphthyridine-8-carboxylic acid · ligand · 3 copies · chains A, B, C

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

Pockets

10 pockets found on a 1 Å grid, 4 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
18240.800.83973NG
26410.690.77553NG
34240.680.80483NG
41430.510.8024empty
5650.460.8316empty

Interfaces

3 interfaces between chains.

  • A–C · 392 Ų buried · 6 hydrogen bonds · protein-protein
  • A–B · 272 Ų buried · 1 hydrogen bond · protein-protein
  • B–C · 18 Ų buried · 0 hydrogen bonds · protein-protein

Compared structures

  • 6KHD · Crystal structure of CLK1 in complex with CX-4945 · the same entry in another collection · chain A against A, TM-score 1.00
  • P49759 · AlphaFold monomer V2.0 prediction for dual specificity protein kinase CLK1 (P49759) · a predicted model of the same protein · chain B against A, TM-score 0.99

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