SMTL ID : 9hmn.1

CryoEM structure of human 20S proteasome in complex with proteasome inhibitor Salinosporamid A

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-2-2-2-2-2-2-2-2-2-2-2-2-2-2-mer

Ligands

6 x SA1: (3AR,6R,6AS)-6-((S)-((S)-CYCLOHEX-2-ENYL)(HYDROXY)METHYL)-6A-METHYL-4-OXO-HEXAHYDRO-2H-FURO[3,2-C]PYRROLE-6-CARBALDEHYDE(Covalent)

SA1.1: 11 residues within 4Å: Chain L: T.1, R.19, T.20, T.21, K.33, R.45, S.46, G.47, A.49, T.52, S.169 6 PLIP interactions: 6 interactions with chain L Hydrophobic interactions: L:K.33, L:A.49 Hydrogen bonds: L:T.1, L:T.21, L:G.47, L:G.47 SA1.2: 10 residues within 4Å: Chain M: T.1, R.19, T.21, K.33, G.45, A.46, G.47, A.49, S.129, G.168 4 PLIP interactions: 4 interactions with chain M Hydrophobic interactions: M:A.49 Hydrogen bonds: M:T.1, M:G.47, M:G.47 SA1.3: 9 residues within 4Å: Chain N: T.1, R.19, A.20, T.21, M.45, G.47, A.49, S.130, Y.169 7 PLIP interactions: 7 interactions with chain N Hydrophobic interactions: N:A.49 Hydrogen bonds: N:T.1, N:T.21, N:T.21, N:G.47, N:G.47, N:S.130 SA1.4: 11 residues within 4Å: Chain Z: T.1, R.19, T.20, T.21, K.33, R.45, S.46, G.47, A.49, T.52, S.169 6 PLIP interactions: 6 interactions with chain Z Hydrophobic interactions: Z:K.33, Z:A.49 Hydrogen bonds: Z:T.1, Z:T.21, Z:G.47, Z:G.47 SA1.5: 10 residues within 4Å: Chain 0: T.1, R.19, T.21, K.33, G.45, A.46, G.47, A.49, S.129, G.168 4 PLIP interactions: 4 interactions with chain 0 Hydrophobic interactions: 0:A.49 Hydrogen bonds: 0:T.1, 0:G.47, 0:G.47 SA1.6: 9 residues within 4Å: Chain 1: T.1, R.19, A.20, T.21, M.45, G.47, A.49, S.130, Y.169 7 PLIP interactions: 7 interactions with chain 1 Hydrophobic interactions: 1:A.49 Hydrogen bonds: 1:T.1, 1:T.21, 1:T.21, 1:G.47, 1:G.47, 1:S.130

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Sulzen, H. et al., Structural insights into Salinosporamide A mediated inhibition of the human 20S proteasome. Biorxiv (2025)

Release Date

2025-03-05

Peptides

Proteasome subunit alpha type-6: AO
Proteasome subunit alpha type-2: BP
Proteasome subunit alpha type-4: CQ
Proteasome subunit alpha type-5: DR
Proteasome subunit alpha type-1: ES
Proteasome subunit alpha type-3: FT
Proteasome subunit beta type-3: GU
Proteasome subunit beta type-2: HV
Proteasome subunit beta type-1: IW
Proteasome subunit beta type-4: JX
Proteasome subunit alpha type-7: KY
Proteasome subunit beta type-6: LZ
Proteasome subunit beta type-7: M0
Proteasome subunit beta type-5: N1

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

O
O

B
B

P
P

C
C

Q
Q

D
E

R
R

E
F

S
S

F
G

T
T

G
J

U
U

H
K

V
V

I
M

W
W

J
N

X
X

K
D

Y
Y

L
H

Z
Z

M
I

0
a

N
L

1
b

Proteasome subunit alpha type-6

Proteasome subunit alpha type-2

Proteasome subunit alpha type-4

Proteasome subunit alpha type-5

Proteasome subunit alpha type-1

Proteasome subunit alpha type-3

Proteasome subunit beta type-3

Proteasome subunit beta type-2

Proteasome subunit beta type-1

Proteasome subunit beta type-4

Proteasome subunit alpha type-7

Proteasome subunit beta type-6

Proteasome subunit beta type-7

Proteasome subunit beta type-5

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