10VM | pdb_000010vm

Structure of human MAIT A-F7 TCR in complex with miniaturized MR1-5-OP-RU

• PDB DOI: https://doi.org/10.2210/pdb10VM/pdb
• EM Map EMD-75491: EMDB EMDataResource

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


• Deposited: 2026-02-10 Released: 2026-09-30 
• Deposition Author(s): Shinde, O., Rotsides, P., Sgourakis, N.G.
• Funding Organization(s): Cancer Research UK, National Institutes of Health/National Cancer Institute (NIH/NCI), The Mark Foundation

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.08 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

A miniaturized MR1 metabolite display system with native-like protein features

Rotsides, P., Shinde, O., Danon, J.N., Sgourakis, N.G.

(2026) Elife 

• DOI: https://doi.org/10.7554/elife.111511.1

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 83.44 kDa 
• Atom Count: 5,442 
• Modeled Residue Count: 680 
• Deposited Residue Count: 728 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Major histocompatibility complex class I-related protein 1	A	250	Homo sapiens	Mutation(s): 0  Gene Names: MR1
UniProt & NIH Common Fund Data Resources
Find proteins for Q95460 (Homo sapiens) Explore Q95460  Go to UniProtKB:  Q95460
PHAROS:  Q95460 GTEx:  ENSG00000153029

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Human TCR alpha chain	B [auth G]	204	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Human TCR beta chain	C [auth H]	274	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
Q87 (Subject of Investigation/LOI)	D [auth A]	1-deoxy-1-({2,6-dioxo-5-[(E)-(2-oxopropylidene)amino]-1,2,3,6-tetrahydropyrimidin-4-yl}amino)-D-ribitol C12 H18 N4 O7 LXKLTDXEFFOBPT-CEKOQDAHSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.08 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	2.0_5885
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-09-30 
Deposition Author(s): Shinde, O., Rotsides, P., Sgourakis, N.G.

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Funding Organization	Location	Grant Number
Cancer Research UK	United Kingdom	CGCATF-2023/100004
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	OT2CA297575
The Mark Foundation	United States	--

Revision History  

• Version 1.0: 2026-09-30
  Type: Initial release