7lj1

Human Prx1-Srx Decameric Complex

Method: X-RAY DIFFRACTION

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Peroxiredoxin-1

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 20	Sulfiredoxin-1 × 10 （Q9BYN0） 1,2-ETHANEDIOL × 9 PHOSPHATE ION × 9 DI(HYDROXYETHYL)ETHER × 2 GLYCEROL × 1 ADENOSINE-5'-TRIPHOSPHATE × 2 water × 18	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 20	Sulfiredoxin-1 × 10 （Q9BYN0） 1,2-ETHANEDIOL × 7 PHOSPHATE ION × 10 DI(HYDROXYETHYL)ETHER × 6 GLYCEROL × 1 water × 18	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PRDX1_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–199； UniProt 1–199 Author chain B； PDBConstruct 1–199； UniProt 1–199 Author chain C； PDBConstruct 1–199； UniProt 1–199 Author chain D； PDBConstruct 1–199； UniProt 1–199 Author chain E； PDBConstruct 1–199； UniProt 1–199 Author chain F； PDBConstruct 1–199； UniProt 1–199 Author chain G； PDBConstruct 1–199； UniProt 1–199 Author chain H； PDBConstruct 1–199； UniProt 1–199 Author chain I； PDBConstruct 1–199； UniProt 1–199 Author chain J； PDBConstruct 1–199； UniProt 1–199 Author chain K； PDBConstruct 1–199； UniProt 1–199 Author chain L； PDBConstruct 1–199； UniProt 1–199 Author chain M； PDBConstruct 1–199； UniProt 1–199 Author chain N； PDBConstruct 1–199； UniProt 1–199 Author chain O； PDBConstruct 1–199； UniProt 1–199 Author chain P； PDBConstruct 1–199； UniProt 1–199 Author chain Q； PDBConstruct 1–199； UniProt 1–199 Author chain R； PDBConstruct 1–199； UniProt 1–199 Author chain S； PDBConstruct 1–199； UniProt 1–199 Author chain T； PDBConstruct 1–199； UniProt 1–199

Sulfiredoxin-1

Homo sapiens

UniProt Q9BYN0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 20	Peroxiredoxin-1 × 10 （Q06830） 1,2-ETHANEDIOL × 9 PHOSPHATE ION × 9 DI(HYDROXYETHYL)ETHER × 2 GLYCEROL × 1 ADENOSINE-5'-TRIPHOSPHATE × 2 water × 18	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 20	Peroxiredoxin-1 × 10 （Q06830） 1,2-ETHANEDIOL × 7 PHOSPHATE ION × 10 DI(HYDROXYETHYL)ETHER × 6 GLYCEROL × 1 water × 18	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SRXN1_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain a； PDBConstruct 4–109； UniProt 32–137 Author chain b； PDBConstruct 4–109； UniProt 32–137 Author chain c； PDBConstruct 4–109； UniProt 32–137 Author chain d； PDBConstruct 4–109； UniProt 32–137 Author chain e； PDBConstruct 4–109； UniProt 32–137 Author chain f； PDBConstruct 4–109； UniProt 32–137 Author chain g； PDBConstruct 4–109； UniProt 32–137 Author chain h； PDBConstruct 4–109； UniProt 32–137 Author chain i； PDBConstruct 4–109； UniProt 32–137 Author chain j； PDBConstruct 4–109； UniProt 32–137 Author chain k； PDBConstruct 4–109； UniProt 32–137 Author chain l； PDBConstruct 4–109； UniProt 32–137 Author chain m； PDBConstruct 4–109； UniProt 32–137 Author chain n； PDBConstruct 4–109； UniProt 32–137 Author chain o； PDBConstruct 4–109； UniProt 32–137 Author chain p； PDBConstruct 4–109； UniProt 32–137 Author chain q； PDBConstruct 4–109； UniProt 32–137 Author chain r； PDBConstruct 4–109； UniProt 32–137 Author chain s； PDBConstruct 4–109； UniProt 32–137 Author chain t； PDBConstruct 4–109； UniProt 32–137

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	7lj1
Deposition date deposition_date	2021-01-28
Structure title title	Human Prx1-Srx Decameric Complex
Keywords keywords	PRX, SRX, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

7lj1__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

7lj1__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7lj1__assembly_2__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	54.24 Å
Rg (electron density)	53.38 Å
Total Rg	53.71 Å
Atom count	22208
Residues	2873
Excluded volume	396050 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7lj1__assembly_1__model_1`	eicosameric （20）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`7lj1__assembly_2__model_1`	eicosameric （20）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (8)

Entity 1 Entity 1 polymer

Description description	Peroxiredoxin-1
Molecular weight formula_weight	22103.2 kDa
EC 编号 ec_number	1.11.1.24
Mutation mutation	C71S,C83V,C173S
Source method src_method	man
Copy count entity_count	20

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T
Atom count atom_count	44942

MSSGNAKIGHPAPNFKATAVMPDGQFKDISLSDYKGKYVVFFFYPLDFTFVCPTEIIAFSDRAEEFKKLNSQVIGASVDSHFVHLAWVNTPKKQGGLGPMNIPLVSDPKRTIAQDYGVLKADEGISFRGLFIIDDKGILRQITVNDLPVGRSVDETLRLVQAFQFTDKHGEVSPAGWKPGSDTIKPDVQKSKEYFSKQK

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Sulfiredoxin-1
Molecular weight formula_weight	11896.5 kDa
EC 编号 ec_number	1.8.98.2
Source method src_method	man
Copy count entity_count	20

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t

GPMSIHSGRIAAVHNVPLSVLIRPLPSVLDPAKVQSLVDTIREDPDSVPPIDVLWIKGAQGGDYFYSFGGCHRYAAYQQLQRETIPAKLVQSTLSDLRVYLGASTPDLQ

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	16

Entity 4 Entity 4 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	19

Entity 5 Entity 5 non-polymer

Description description	DI(HYDROXYETHYL)ETHER
Molecular weight formula_weight	106.1 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 6 Entity 6 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 7 Entity 7 non-polymer

Description description	ADENOSINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	507.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	200

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6. Fold Classification (SCOP + CATH) 40 domains

SCOP 2.08 (20 domains)

Domain ID domain_id	d7lj1a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1c_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1d_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1e_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1f_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1g_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1h_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1i_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1j_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1k_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1l_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1m_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1n_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1o_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1p_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1q_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1r_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1s_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

Domain ID domain_id	d7lj1t_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.10 — Glutathione peroxidase-like

CATH v4.4 (20 domains)

Domain ID domain_id	7lj1A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1C01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1D01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1E01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1F01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1G01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1H01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1I01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1J01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1K01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1L01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1M01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1N01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1O01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1P01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1Q01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1R01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1S01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	7lj1T01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

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Unit-cell length a length_a	330.834 Å
Unit-cell length b length_b	109.937 Å
Unit-cell length c length_c	260.143 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	122.34 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	80

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.970 Å
Low-resolution limit resolution_low	38.970 Å
R factor r_factor	0.1941
R_work r_work	0.1923
R_free r_free	0.2301

Human Prx1-Srx Decameric Complex

1. Protein Identity and Related Structures Protein Identity & Related Structures

Peroxiredoxin-1

State in the Current Structure

Other States of the Same Protein in the Database

Sulfiredoxin-1

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7lj1__assembly_2__model_1

7lj1__assembly_2__model_1 | I(q)

7lj1__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 40 domains

SCOP 2.08 (20 domains)

CATH v4.4 (20 domains)

7. Citations (1)

Human Prx1-Srx Decameric Complex

1. Protein Identity and Related Structures Protein Identity & Related Structures

Peroxiredoxin-1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Sulfiredoxin-1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7lj1__assembly_2__model_1

7lj1__assembly_2__model_1 | I(q)

7lj1__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 40 domains

SCOP 2.08 (20 domains)

CATH v4.4 (20 domains)

7. Citations (1)