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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P04234 New Search
31PDB entries
32Biological assembly
36chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1XIW Crystal structure of human CD3-e/d dimer in complex with a UCHT1 single-chain antibody fragment Deposited 2004-09-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 23–100（78 aa） Fragment：ectodomain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；295 K；PEG 3350, sodium chloride, HEPES, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 22K
Resolution 1.90 Å R-free 0.241
1XIW Crystal structure of human CD3-e/d dimer in complex with a UCHT1 single-chain antibody fragment Deposited 2004-09-22 Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain F 23–100（78 aa） Fragment：ectodomain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；295 K；PEG 3350, sodium chloride, HEPES, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 22K
Resolution 1.90 Å R-free 0.241
6JXR Structure of human T cell receptor-CD3 complex Deposited 2019-04-24 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.70 Å
7FJD Cryo-EM structure of a membrane protein(WT) Deposited 2021-08-03 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.20 Å
7FJE Cryo-EM structure of a membrane protein(LL) Deposited 2021-08-03 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.00 Å
7FJF Cryo-EM structure of a membrane protein(CS) Deposited 2021-08-03 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded C3S CHOLEST-5-EN-3-YL HYDROGEN SULFATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.10 Å
7PHR Structure of a fully assembled T-cell receptor engaging a tumor-associated peptide-MHC I Deposited 2021-08-18 Assembly 1 Insufficient information Heteromer；Protein × 11 PDB declaration: undecameric（11） Consistent with protein count
Chain D 22–132（111 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.08 Å
8ES7 CryoEM structure of PN45545 TCR-CD3 complex Deposited 2022-10-13 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain D 1–171（171 aa）
Not recorded Y01 CHOLESTEROL HEMISUCCINATE × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.04 Å
8ES8 CryoEM structure of PN45545 TCR-CD3 in complex with HLA-A2 MAGEA4 (230-239) Deposited 2022-10-13 Assembly 1 Other combination Heteromer；Protein × 11 PDB declaration: undecameric（11） Consistent with protein count
Chain D 1–171（171 aa）
Not recorded Y01 CHOLESTEROL HEMISUCCINATE × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.65 Å
8ES9 CryoEM structure of PN45428 TCR-CD3 in complex with HLA-A2 MAGEA4 Deposited 2022-10-13 Assembly 1 Other combination Heteromer；Protein × 11 PDB declaration: undecameric（11） Consistent with protein count
Chain D 1–171（171 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 Y01 CHOLESTEROL HEMISUCCINATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.25 Å
8JC0 V gamma9 V delta2 TCR and CD3 complex in LMNG Deposited 2023-05-10 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8JCB Vgamma5 Vdelta1 T cell receptor complex Deposited 2023-05-10 Assembly 1 Insufficient information Heteromer；Protein × 16 PDB declaration: hexadecameric（16） Consistent with protein count
Chain D 1–171（171 aa）
Chain d 1–171（171 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 9.50 Å
8TW4 TCR in nanodisc ND-I Deposited 2023-08-20 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain D 1–171（171 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8TW6 TCR in nanodisc ND-II Deposited 2023-08-20 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain D 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8WXE Vgamma5Vdelta1 EH TCR-CD3 complex Deposited 2023-10-28 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.00 Å
8WY0 T cell receptor delta 2 gamma 9 with F283A, F290A, and F291A Deposited 2023-10-30 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8WYI T cell receptor delta 2 gamma 9 with TCRD TM domain chimera of TRAC Deposited 2023-10-31 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
8YC0 T cell receptor V delta2 V gamma9 in GDN Deposited 2024-02-17 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.12 Å
8ZA6 Cryo-EM structure of the gdTCR-CD3 complex Deposited 2024-04-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.43 Å
9BBC TCR GDN detergent micelle Deposited 2024-04-05 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain D 1–171（171 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9C3E TCR - CD3 complex bound to HLA Deposited 2024-05-31 Assembly 1 Insufficient information Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain D 1–125（125 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
9CI8 T cell receptor complex Deposited 2024-07-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain d 22–126（105 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Hepes buffer saline
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.01 Å
9CIA T cell receptor complex Deposited 2024-07-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain d 22–127（106 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；HEPES buffer saline
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.39 Å
9CQ4 G115 gamma delta TCR/CD3 complex bound by OKT3 Fab Deposited 2024-07-19 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain K 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.27 Å
9IRS Cryo-EM structure of the TCR-OKT3 complex Deposited 2024-07-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.18 Å
9IRU Cryo-em structure of TCR-4B1 complex Deposited 2024-07-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.14 Å
9JXZ V gamma9 V delta2 TCR and CD3 complex Deposited 2024-10-12 Assembly 1 Insufficient information Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 2 LPE 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.31 Å
9JY0 Fab-CD3-gamma epsilon-TCR complex Deposited 2024-10-12 Assembly 1 Insufficient information Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain d 1–171（171 aa）
Not recorded CLR CHOLESTEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.69 Å
9JY1 delta epsilon/delta epsilon Fab-TCR tetramer Deposited 2024-10-12 Assembly 1 Insufficient information Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain D 1–171（171 aa）
Chain d 1–171（171 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.08 Å
9JY2 Fab-CD3-delta epsilon-TCR complex Deposited 2024-10-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain d 22–126（105 aa）
Not recorded CLR CHOLESTEROL × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.24 Å
9JY3 delta epsilon/gamma epsilon Fab-TCR tetramer Deposited 2024-10-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain D 22–126（105 aa）
Chain d 22–126（105 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.35 Å
9JY4 gamma epsilon/gamma epsilon Fab-TCR tetramer Deposited 2024-10-12 Assembly 1 Insufficient information Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain D 1–171（171 aa）
Chain d 1–171（171 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.29 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.