9Z50 | pdb_00009z50

Q61H_Sahin-1 TCR in complex with HLA-A*01:01 presenting KRAS Q61H 10mer peptide (55-ILDTAGHEEY-64)

• PDB DOI: https://doi.org/10.2210/pdb9Z50/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Escherichia coli, Homo sapiens
• Mutation(s): Yes 


• Deposited: 2025-11-11 Released: 2026-09-16 
• Deposition Author(s): Miller, H.A., Palowitch, G.M., Dulberger, C.L.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 
  0.332 (Depositor), 0.330 (DCC) 
• R-Value Work: 
  0.286 (Depositor), 0.287 (DCC) 
• R-Value Observed: 
  0.288 (Depositor) 

Starting Models: experimental

Literature

KRAS Q61H-specific TCR in complex with HLA-A*01:01 presenting KRAS Q61H 10mer peptide (55-ILDTAGHEEY-64)

Jackson, E.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: surface plasmon resonance, gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 201.46 kDa 
• Atom Count: 11,560 
• Modeled Residue Count: 1,592 
• Deposited Residue Count: 1,768 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GTPase KRas	A [auth P], F [auth E]	10	Homo sapiens	Mutation(s): 1  EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P01116 (Homo sapiens) Explore P01116  Go to UniProtKB:  P01116
PHAROS:  P01116 GTEx:  ENSG00000133703

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
MHC class I antigen	B [auth C], G [auth F]	303	Homo sapiens	Mutation(s): 0  Gene Names: HLA-A
UniProt
Find proteins for A0A678ZVJ3 (Homo sapiens) Explore A0A678ZVJ3  Go to UniProtKB:  A0A678ZVJ3

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-2-microglobulin	C [auth D], H [auth G]	100	Homo sapiens	Mutation(s): 0  Gene Names: B2M, CDABP0092, HDCMA22P
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens) Explore P61769  Go to UniProtKB:  P61769
PHAROS:  P61769 GTEx:  ENSG00000166710

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Q61H_Sahin-1 alpha chain (TRAV14/DV4)	D [auth A], I [auth H]	218	Homo sapiens	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Q61H_Sahin-1 beta chain (TRBV9)	E [auth B], J [auth I]	253	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	K [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free:  0.332 (Depositor), 0.330 (DCC) 
• R-Value Work:  0.286 (Depositor), 0.287 (DCC) 
• R-Value Observed: 0.288 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 82.886	α = 90
b = 119.929	β = 90
c = 229.043	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data scaling
xia2	data reduction
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-09-16 
Deposition Author(s): Miller, H.A., Palowitch, G.M., Dulberger, C.L.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2026-09-16
  Type: Initial release