9KWZ | pdb_00009kwz

Cryo-EM structure of the ICT01-BTN2A1/BTN3A1/BTN3A2 complex

PDB DOI: https://doi.org/10.2210/pdb9KWZ/pdb
EM Map EMD-62622: EMDB EMDataResource

Classification: IMMUNE SYSTEM
Organism(s): Homo sapiens
Expression System: Homo sapiens
Mutation(s): No

Deposited: 2024-12-06 Released: 2025-12-17
Deposition Author(s): Xin, W.Z., Huang, B.D., Zhou, Q.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 3.70 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9KWZ

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

Literature

Cryo-EM structure of the ICT01-BTN2A1/BTN3A1/BTN3A2 complex at 3.7 Angstroms reolution

Xin, W.Z., Huang, B.D., Zhou, Q.

To be published.

Macromolecule Content

Total Structure Weight: 272.4 kDa
Atom Count: 10,022
Modeled Residue Count: 1,304
Deposited Residue Count: 2,438
Unique protein chains: 5

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Butyrophilin subfamily 2 member A1	A, B	534	Homo sapiens	Mutation(s): 0 Gene Names: BTN2A1, BT2.1, BTF1
UniProt & NIH Common Fund Data Resources
Find proteins for Q7KYR7 (Homo sapiens) Explore Q7KYR7 Go to UniProtKB: Q7KYR7
PHAROS: Q7KYR7 GTEx: ENSG00000112763
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q7KYR7
Sequence Annotations Expand
Reference Sequence

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Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Butyrophilin subfamily 3 member A2	C [auth E]	340	Homo sapiens	Mutation(s): 0 Gene Names: BTN3A2, BT3.2, BTF3, BTF4
UniProt & NIH Common Fund Data Resources
Find proteins for P78410 (Homo sapiens) Explore P78410 Go to UniProtKB: P78410
PHAROS: P78410 GTEx: ENSG00000186470
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P78410
Sequence Annotations Expand
Reference Sequence

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Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Butyrophilin subfamily 3 member A1	D [auth F]	539	Homo sapiens	Mutation(s): 0 Gene Names: BTN3A1, BTF5
UniProt & NIH Common Fund Data Resources
Find proteins for O00481 (Homo sapiens) Explore O00481 Go to UniProtKB: O00481
PHAROS: O00481 GTEx: ENSG00000026950
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	O00481
Sequence Annotations Expand
Reference Sequence

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Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
ICT01 heavy chain	E [auth H]	255	Homo sapiens	Mutation(s): 0

Find similar proteins by:

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
ICT01 light chain	F [auth L]	236	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 3.70 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	5
MODEL REFINEMENT	EMAN2	2.99.62

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2025-12-17

Deposition Author(s):

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32100975

Revision History (Full details and data files)

Version 1.0: 2025-12-17
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.