9V11 | pdb_00009v11

The Fab fragment of Osemitamab (TST001), a therapeutic antibody targeting claudin 18.2

PDB DOI: https://doi.org/10.2210/pdb9V11/pdb

Classification: ANTITUMOR PROTEIN
Organism(s): Mus musculus
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-05-19 Released: 2026-05-27
Deposition Author(s): Wang, X., Sun, Z., Zhou, X.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.73 Å
R-Value Free:
0.229 (Depositor), 0.237 (DCC)
R-Value Work:
0.200 (Depositor), 0.206 (DCC)
R-Value Observed:
0.201 (Depositor)

Starting Model: in silico
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wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

Recognition of human claudin 18.2 by therapeutic antibodies

Wang, X., Sun, Z., Zhou, X.

To be published.

Macromolecule Content

Total Structure Weight: 52.37 kDa
Atom Count: 3,636
Modeled Residue Count: 430
Deposited Residue Count: 469
Unique protein chains: 2

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab of Osemitamab (TST001), Heavy chain	A [auth H]	249	Mus musculus	Mutation(s): 0

Find similar proteins by:

| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab of Osemitamab (TST001), Light chain	B [auth L]	220	Mus musculus	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain C [auth H] SDF format, chain D [auth H] SDF format, chain E [auth H] SDF format, chain F [auth H] SDF format, chain G [auth H] SDF format, chain H [auth L] SDF format, chain I [auth L] SDF format, chain J [auth L] SDF format, chain K [auth L] SDF format, chain L SDF format, chain M [auth L] SDF format, chain N [auth L] MOL2 format, chain C [auth H] MOL2 format, chain D [auth H] MOL2 format, chain E [auth H] MOL2 format, chain F [auth H] MOL2 format, chain G [auth H] MOL2 format, chain H [auth L] MOL2 format, chain I [auth L] MOL2 format, chain J [auth L] MOL2 format, chain K [auth L] MOL2 format, chain L MOL2 format, chain M [auth L] MOL2 format, chain N [auth L] mmCIF format, chain C [auth H] mmCIF format, chain D [auth H] mmCIF format, chain E [auth H] mmCIF format, chain F [auth H] mmCIF format, chain G [auth H] mmCIF format, chain H [auth L] mmCIF format, chain I [auth L] mmCIF format, chain J [auth L] mmCIF format, chain K [auth L] mmCIF format, chain L mmCIF format, chain M [auth L] mmCIF format, chain N [auth L]	C [auth H] D [auth H] E [auth H] F [auth H] G [auth H] C [auth H], D [auth H], E [auth H], F [auth H], G [auth H], H [auth L], I [auth L], J [auth L], K [auth L], L, M [auth L], N [auth L]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain C [auth H] Focus chain D [auth H] Focus chain E [auth H] Focus chain F [auth H] Focus chain G [auth H] Focus chain H [auth L] Focus chain I [auth L] Focus chain J [auth L] Focus chain K [auth L] Focus chain L Focus chain M [auth L] Focus chain N [auth L] Interactions & Density Focus chain C [auth H] Focus chain D [auth H] Focus chain E [auth H] Focus chain F [auth H] Focus chain G [auth H] Focus chain H [auth L] Focus chain I [auth L] Focus chain J [auth L] Focus chain K [auth L] Focus chain L Focus chain M [auth L] Focus chain N [auth L]