9T5Q | pdb_00009t5q

LRR domain Structure of LRRC8A in complex with synthetic nanobody Sb4

PDB DOI: https://doi.org/10.2210/pdb9T5Q/pdb

Classification: CYTOSOLIC PROTEIN
Organism(s): Mus musculus, synthetic construct
Expression System: Homo sapiens, Escherichia coli MC1061
Mutation(s): No

Deposited: 2025-11-05 Released: 2026-09-02
Deposition Author(s): Lehmann, E.F., Deneka, D., Stierli, F., Rutz, S., Dutzler, R.
Funding Organization(s): Swiss National Science Foundation

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free:
0.229 (Depositor), 0.229 (DCC)
R-Value Work:
0.198 (Depositor), 0.198 (DCC)
R-Value Observed:
0.200 (Depositor)

Starting Model: experimental
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This is version 1.0 of the entry. See complete history.

Literature

Structures of the volume-regulated anion channel LRRC8A/D in activating and inhibiting conditions

Lehmann, E.F., Deneka, D., Stierli, F., Rutz, S., Dutzler, R.

To be published.

Macromolecule Content

Total Structure Weight: 123.92 kDa
Atom Count: 9,261
Modeled Residue Count: 1,049
Deposited Residue Count: 1,086
Unique protein chains: 2

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Volume-regulated anion channel subunit LRRC8A	A, C [auth B]	415	Mus musculus	Mutation(s): 0 Gene Names: Lrrc8a, Lrrc8, Swell1
UniProt & NIH Common Fund Data Resources
Find proteins for Q80WG5 (Mus musculus) Explore Q80WG5 Go to UniProtKB: Q80WG5
IMPC: MGI:2652847
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q80WG5
Sequence Annotations Expand
Reference Sequence

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Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Sb4	B [auth I], D [auth C]	128	synthetic construct	Mutation(s): 0
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free: 0.229 (Depositor), 0.229 (DCC)
R-Value Work: 0.198 (Depositor), 0.198 (DCC)
R-Value Observed: 0.200 (Depositor)

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.948	α = 111.037
b = 73.486	β = 94.349
c = 81.924	γ = 110.313

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-09-02

Deposition Author(s):

Funding Organization	Location	Grant Number
Swiss National Science Foundation	Switzerland	--

Revision History (Full details and data files)

Version 1.0: 2026-09-02
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.