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Yeast 20S proteasome in complex with the covalently bound inhibitor B- lactone (2R,3S)-3-isopropyl-4-oxo-2-oxetane-carboxylate (ioc)

Analyse Yeast 20S proteasome in complex with the covalently bound inhibitor B- lactone… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7O2L
Type
protein
Length
6,334 residues
Chains
28
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
HLJ1_G0039880.MRNA.1.CDS.1; BJ4_G0021480.MRNA.1.CDS.1; HLJ1_G0048980.MRNA.1.CDS.1; 20S…
EC
3.4.25.1
UniProt
A0A6L1BIF8, A0A6A5PXC6, A0A6A5Q273, P32379, A0A6A5PTH4, A0A6A5Q4M4, A0A6A5PYC9, A0A6A5Q449, A0A6L0YA22, A0A6A5Q0W2, A0A6V8RU78, A0A6A5Q0P3, P30657, A0A6L0ZSP2
Ligands
V08, MG, CL
Pockets
20 · best druggability 0.83

Structure

x-ray diffraction · 14 distinct chains · 35% helix, 29% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, OHLJ1_G0039880.MRNA.1.CDS.1protein25034% helix, 26% strandA0A6L1BIF8
B, PBJ4_G0021480.MRNA.1.CDS.1protein24437% helix, 25% strandA0A6A5PXC6
C, QHLJ1_G0048980.MRNA.1.CDS.1protein24036% helix, 22% strandA0A6A5Q273
D, R20S proteasomeprotein23537% helix, 27% strandP32379
E, SBJ4_G0043800.MRNA.1.CDS.1protein23138% helix, 28% strandA0A6A5PTH4
F, TProbable proteasome subunit alpha type-7protein24340% helix, 26% strandA0A6A5Q4M4
G, UBJ4_G0020160.MRNA.1.CDS.1protein24139% helix, 23% strandA0A6A5PYC9
H, VProteasome endopeptidase complex (EC 3.4.25.1)protein22629% helix, 33% strandA0A6A5Q449
I, WProteasome endopeptidase complex (EC 3.4.25.1)protein20432% helix, 33% strandA0A6L0YA22
J, XProteasome subunit beta (EC 3.4.25.1)protein19533% helix, 35% strandA0A6A5Q0W2
K, YProteasome subunit beta type-5 (EC 3.4.25.1)protein21236% helix, 35% strandA0A6V8RU78
L, ZProteasome endopeptidase complex (EC 3.4.25.1)protein22228% helix, 32% strandA0A6A5Q0P3
M, aProteasome subunit beta type-7protein22832% helix, 32% strandP30657
N, bProteasome endopeptidase complex (EC 3.4.25.1)protein19636% helix, 34% strandA0A6L0ZSP2

Ligands and binding sites

  • V08 · (2 {R},3 {S})-3-methanoyl-4-methyl-2-hydroxy-pentanoic acid · ligand · 6 copies · chains H, K, N, V, Y, b
  • MG · Magnesium ion · metal · 8 copies · chains G, I, Y, K, W, N, a, L, V, H, Z
  • CL · Chloride ion · ion · 2 copies · chains G, H, U, V

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
111590.830.84163V08
29480.820.84117V08
38910.810.83106empty
47080.800.8496empty
510110.790.81119empty

Interfaces

90 interfaces between chains.

  • V–W · 1809 Ų buried · 30 hydrogen bonds · protein-protein
  • H–I · 1769 Ų buried · 29 hydrogen bonds · protein-protein
  • B–C · 1612 Ų buried · 27 hydrogen bonds · protein-protein
  • P–Q · 1583 Ų buried · 23 hydrogen bonds · protein-protein
  • L–V · 1564 Ų buried · 21 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 6 covalent (covalent ligand).

Compared structures

  • 7O2L · Yeast 20S proteasome in complex with the covalently bound inhibitor b-lactone… · the same entry in another collection · chain B against B, TM-score 1.00

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