SMTL ID : 8rmm.1

Structure of heteromeric CALHM2/4 channel in complex with synthetic nanobodies SbC2 and SbC4

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-3-3-8-7-mer

Ligands

6 x PLC: DIUNDECYL PHOSPHATIDYL CHOLINE(Non-covalent)

PLC.1: 9 residues within 4Å: Chain F: S.105, S.106, G.109, A.112, V.113, V.116, V.200, T.203, K.207 4 PLIP interactions: 4 interactions with chain F Hydrophobic interactions: F:A.112, F:V.113, F:V.116, F:V.200 PLC.2: 10 residues within 4Å: Chain H: S.105, S.106, G.109, A.112, V.113, L.192, V.196, L.199, V.200, T.203 5 PLIP interactions: 5 interactions with chain H Hydrophobic interactions: H:A.112, H:L.192, H:V.196, H:L.199, H:V.200 PLC.3: 10 residues within 4Å: Chain J: S.105, S.106, G.109, V.113, L.192, V.196, L.199, V.200, T.203, K.207 5 PLIP interactions: 5 interactions with chain J Hydrophobic interactions: J:V.113, J:V.113, J:L.192, J:V.196, J:L.199 PLC.4: 10 residues within 4Å: Chain L: S.105, S.106, G.109, R.110, A.112, V.113, V.116, V.196, V.200, T.203 7 PLIP interactions: 7 interactions with chain L Hydrophobic interactions: L:A.112, L:V.113, L:V.113, L:V.116, L:V.196, L:V.200 Hydrogen bonds: L:T.203 PLC.5: 9 residues within 4Å: Chain N: S.105, S.106, G.109, A.112, V.113, L.199, V.200, T.203, K.207 5 PLIP interactions: 5 interactions with chain N Hydrophobic interactions: N:A.112, N:V.113, N:L.199, N:V.200 Hydrogen bonds: N:T.203 PLC.6: 11 residues within 4Å: Chain P: S.105, S.106, G.109, R.110, A.112, V.113, V.196, L.199, V.200, T.203, K.207 6 PLIP interactions: 6 interactions with chain P Hydrophobic interactions: P:A.112, P:V.113, P:V.196, P:L.199, P:V.200 Hydrogen bonds: P:T.203

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Drozdzyk, K. et al., Structural features of heteromeric channels composed of CALHM2 and CALHM4 paralogs. Elife (2024)

Release Date

2024-06-19

Peptides

Calcium homeostasis modulator protein 4: ACS
Synthetic nanobody SbC4: BDT
Calcium homeostasis modulator protein 2: EFHJLNPR
Synthetic nanobody SbC2: GIKMOQU

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

C
B

S
K

B
L

D
M

T
U

E
C

F
D

H
E

J
F

L
G

N
H

P
I

R
J

G
O

I
P

K
Q

M
R

O
S

Q
T

U
N

Membrane

We predict this structure to be a membrane protein.
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Calcium homeostasis modulator protein 4

Synthetic nanobody SbC4

Calcium homeostasis modulator protein 2

Synthetic nanobody SbC2

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