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MolNFT v1 · #156069 · protein

A novel anti-tumor agent S-40 in complex with tubulin

6LS4 · Tubulin alpha-1B chain: “A novel anti-tumor agent S-40 in complex with tubulin”. X-ray diffraction, 4 ligands (GTP, S40, GDP), 20 pockets (best druggability 0.84). MolNFT v1 #156069 on GenesisL1: 3D structure, binding sites and…

PDB
6LS4
Type
protein
Length
1,843 residues
Chains
5
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Tubulin alpha-1B chain; Tubulin beta chain; Stathmin
UniProt
Q2XVP4, P02554, F2Z508
Ligands
GTP, S40, GDP, MG
Pockets
20 · best druggability 0.84

Structure

x-ray diffraction · 5 distinct chains · 48% helix, 18% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ATubulin alpha-1B chainprotein42945% helix, 19% strandQ2XVP4
BTubulin beta chainprotein42347% helix, 19% strandP02554
CTubulin alpha-1B chainprotein43946% helix, 19% strandQ2XVP4
DTubulin beta chainprotein42847% helix, 18% strandP02554
EStathminprotein12477% helix, 14% strandF2Z508

Ligands and binding sites

  • GTP · Guanosine-5'-triphosphate · ligand · 3 copies · chains A, B, C, D
  • S40 · 3-[(4-cyclopropylphenyl)sulfonylamino]-4-methyl-N-(pyridin-3-ylmethyl)benzamide · ligand · 2 copies · chains A, B, C, D
  • GDP · Guanosine-5'-diphosphate · ligand · chains B
  • MG · Magnesium ion · metal · 6 copies · chains A, C, B, D
  • MES · 2-(N-morpholino)-ethanesulfonic acid · additive · chains A, B
  • GOL · Glycerol · additive · chains B, C

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

Pockets

20 pockets found on a 1 Å grid, 13 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
18570.840.8691GTP, MG, S40
211670.830.84107GTP, MG, S40
34270.800.8873GDP, GOL
45380.700.8048MES
55340.680.7848empty

Interfaces

7 interfaces between chains.

  • B–C · 1494 Ų buried · 23 hydrogen bonds · protein-protein
  • A–E · 1436 Ų buried · 18 hydrogen bonds · protein-protein
  • C–D · 1367 Ų buried · 10 hydrogen bonds · protein-protein
  • A–B · 1306 Ų buried · 17 hydrogen bonds · protein-protein
  • C–E · 830 Ų buried · 7 hydrogen bonds · protein-protein

Compared structures

  • 6LS4 · A novel anti-tumor agent S-40 in complex with tubulin · the same entry in another collection · chain A against A, TM-score 1.00

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