SMTL ID : 9r2e.1

Structure of ARGX-121 Fab fragment in complex with the Fc fragment of IgA1

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.54 Å

Oligo State

hetero-2-2-2-mer

Ligands

4 x EDO: 1,2-ETHANEDIOL(Non-functional Binders)

EDO.1: 4 residues within 4Å: Chain A: T.131, L.132, P.173, K.225 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:T.131, A:L.132 EDO.2: 5 residues within 4Å: Chain A: K.84, G.85, R.86, F.87, T.88 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:G.85 EDO.8: 5 residues within 4Å: Chain E: Y.79, G.85, R.86, F.87, T.88 2 PLIP interactions: 2 interactions with chain E Hydrogen bonds: E:G.85, E:R.86 EDO.11: 5 residues within 4Å: Chain E: E.172, F.190, P.191, A.192, L.202 1 PLIP interactions: 1 interactions with chain E Hydrogen bonds: E:A.192

5 x PEG: DI(HYDROXYETHYL)ETHER(Non-functional Binders)

PEG.3: 4 residues within 4Å: Chain A: N.179, S.180, I.219, N.221 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:N.221 PEG.4: 2 residues within 4Å: Chain B: P.33, G.130 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:G.130 PEG.7: 7 residues within 4Å: Chain E: L.148, A.149, S.151, K.238 Chain F: L.140, F.141, P.142 1 PLIP interactions: 1 interactions with chain E Hydrogen bonds: E:A.149 PEG.9: 5 residues within 4Å: Chain E: G.130, T.131, L.132, P.173, K.225 2 PLIP interactions: 2 interactions with chain E Hydrogen bonds: E:L.132 Water bridges: E:K.225 PEG.10: 8 residues within 4Å: Chain E: Q.58, A.59, P.60, G.61, V.112 Chain F: L.60, P.61, G.62 4 PLIP interactions: 2 interactions with chain E, 2 interactions with chain F Hydrogen bonds: E:Q.58, E:G.61, F:L.60, F:G.62

3 x MG: MAGNESIUM ION(Non-covalent)

MG.5: 1 residues within 4Å: Chain B: H.211 2 PLIP interactions: 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:H.211, H2O.6 MG.6: 2 residues within 4Å: Chain C: E.72, H.76 2 PLIP interactions: 2 interactions with chain C Metal complexes: C:E.72, C:H.76 MG.12: 1 residues within 4Å: Chain F: H.211 1 PLIP interactions: 1 interactions with chain F Metal complexes: F:H.211

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Voet, S. et al., Structure of ARGX-121 Fab fragment in complex with the Fc fragment of IgA1. To Be Published

Release Date

2025-05-14

Peptides

ARGX-121 Fab fragment heavy chain: AE
ARGX-121 Fab fragment light chain: BF
Isoform 1 of Immunoglobulin heavy constant alpha 1: CD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
H

E
A

B
L

F
B

C
P

D
Q

ARGX-121 Fab fragment heavy chain

ARGX-121 Fab fragment light chain

Isoform 1 of Immunoglobulin heavy constant alpha 1