9UIN | pdb_00009uin

Human thioredoxin reductase 1 (SeCys 498 Cys) with Cu(I)

PDB DOI: https://doi.org/10.2210/pdb9UIN/pdb
EM Map EMD-64198: EMDB EMDataResource

Classification: OXIDOREDUCTASE
Organism(s): Homo sapiens
Expression System: Homo
Mutation(s): Yes

Deposited: 2025-04-15 Released: 2026-04-22
Deposition Author(s): wang, J.
Funding Organization(s): National Fund for Scientific Research

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 3.03 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9UIN

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

Literature

Crystal structure of the human thioredoxin reductase 1 (SeCys 498 Cys) with Cu(I)

Wang, J.

To be published.

Macromolecule Content

Total Structure Weight: 112.99 kDa
Atom Count: 7,690
Modeled Residue Count: 968
Deposited Residue Count: 998
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thioredoxin reductase 1, cytoplasmic	A [auth B], B [auth A]	499	Homo sapiens	Mutation(s): 1 Gene Names: TXNRD1, GRIM12, KDRF EC: 1.8.1.9 (PDB Primary Data), 1.11.1.2 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q16881 (Homo sapiens) Explore Q16881 Go to UniProtKB: Q16881
PHAROS: Q16881 GTEx: ENSG00000198431
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q16881
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
FAD (Subject of Investigation/LOI) Query on FAD Download:Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain D [auth B] MOL2 format, chain I [auth A] MOL2 format, chain D [auth B] mmCIF format, chain I [auth A] mmCIF format, chain D [auth B]	D [auth B], I [auth A]	FLAVIN-ADENINE DINUCLEOTIDE C₂₇ H₃₃ N₉ O₁₅ P₂ VWWQXMAJTJZDQX-UYBVJOGSSA-N		Interactions Focus chain D [auth B] Focus chain I [auth A] Interactions & Density Focus chain D [auth B] Focus chain I [auth A]
TXP (Subject of Investigation/LOI) Query on TXP Download:Ideal Coordinates CCD File SDF format, chain H [auth A] SDF format, chain C [auth B] MOL2 format, chain H [auth A] MOL2 format, chain C [auth B] mmCIF format, chain H [auth A] mmCIF format, chain C [auth B]	C [auth B], H [auth A]	1,4,5,6-TETRAHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE PHOSPHATE C₂₁ H₃₂ N₇ O₁₇ P₃ MGWIKFWDIJJFDG-ILTSWSAWSA-N		Interactions Focus chain C [auth B] Focus chain H [auth A] Interactions & Density Focus chain C [auth B] Focus chain H [auth A]
CU Query on CU Download:Ideal Coordinates CCD File SDF format, chain L [auth A] SDF format, chain K [auth A] SDF format, chain J [auth A] SDF format, chain G [auth B] SDF format, chain F [auth B] SDF format, chain E [auth B] MOL2 format, chain L [auth A] MOL2 format, chain K [auth A] MOL2 format, chain J [auth A] MOL2 format, chain G [auth B] MOL2 format, chain F [auth B] MOL2 format, chain E [auth B] mmCIF format, chain L [auth A] mmCIF format, chain K [auth A] mmCIF format, chain J [auth A] mmCIF format, chain G [auth B] mmCIF format, chain F [auth B] mmCIF format, chain E [auth B]	E [auth B] F [auth B] G [auth B] J [auth A] K [auth A] E [auth B], F [auth B], G [auth B], J [auth A], K [auth A], L [auth A]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N		Interactions Focus chain E [auth B] Focus chain F [auth B] Focus chain G [auth B] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Interactions & Density Focus chain E [auth B] Focus chain F [auth B] Focus chain G [auth B] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 3.03 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.17.1_3660
RECONSTRUCTION	cryoSPARC

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-04-22

Deposition Author(s):

Funding Organization	Location	Grant Number
National Fund for Scientific Research	Belgium	2022YFC3400600

Revision History (Full details and data files)

Version 1.0: 2026-04-22
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.