8HLA

Heteromeric ring comprised of peroxiredoxin from Thermococcus kodakaraensis (TkPrx) F42C/C46S/C205S/C211S mutant modified with 2-(bromoacetyl)naphthalene (Naph@TkPrxF42C) and TkPrx C46S/F76C/C205S/C211S mutant modified with 2-(bromoacetyl)naphthalene (Naph@TkPrxF76C) (Naph@(MIX|3:3))

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	PF00578,PF10417	e8hlaE1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
I	PF00578,PF10417	e8hlaI1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
J	PF00578,PF10417	e8hlaJ1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
A	PF00578,PF10417	e8hlaA1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
B	PF00578,PF10417	e8hlaB1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
F	PF00578,PF10417	e8hlaF1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
D	PF00578,PF10417	e8hlaD1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
G	PF00578,PF10417	e8hlaG1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
H	PF00578,PF10417	e8hlaH1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
L	PF00578,PF10417	e8hlaL1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
C	PF00578,PF10417	e8hlaC1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)
K	PF00578,PF10417	e8hlaK1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: PF00578,PF10417	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, E, F, I A, B, E, F, I, J	PF00578	AhpC/TSA family (AhpC-TSA)	AhpC/TSA family	This family contains proteins related to alkyl hydroperoxide reductase (AhpC) and thiol specific antioxidant (TSA).	Domain
A, B, E, F, I A, B, E, F, I, J	PF10417	C-terminal domain of 1-Cys peroxiredoxin (1-cysPrx_C)	C-terminal domain of 1-Cys peroxiredoxin	This is the C-terminal domain of 1-Cys peroxiredoxin (1-cysPrx), a member of the peroxiredoxin superfamily which protect cells against membrane oxidation through glutathione (GSH)-dependent reduction of phospholipid hydroperoxides to corresponding al ...	This is the C-terminal domain of 1-Cys peroxiredoxin (1-cysPrx), a member of the peroxiredoxin superfamily which protect cells against membrane oxidation through glutathione (GSH)-dependent reduction of phospholipid hydroperoxides to corresponding alcohols [1]. The C-terminal domain is crucial for providing the extra cysteine necessary for dimerisation of the whole molecule. Loss of the enzyme's peroxidase activity is associated with oxidation of the catalytic cysteine, upstream of this domain; and glutathionylation, presumably through its disruption of protein structure, facilitates access for GSH, resulting in spontaneous reduction of the mixed disulfide to the sulfhydryl and consequent activation of the enzyme [2]. The domain is associated with family AhpC-TSA, Pfam:PF00578, which carries the catalytic cysteine.	Domain
C, D, G, H, K C, D, G, H, K, L	PF00578	AhpC/TSA family (AhpC-TSA)	AhpC/TSA family	This family contains proteins related to alkyl hydroperoxide reductase (AhpC) and thiol specific antioxidant (TSA).	Domain
C, D, G, H, K C, D, G, H, K, L	PF10417	C-terminal domain of 1-Cys peroxiredoxin (1-cysPrx_C)	C-terminal domain of 1-Cys peroxiredoxin	This is the C-terminal domain of 1-Cys peroxiredoxin (1-cysPrx), a member of the peroxiredoxin superfamily which protect cells against membrane oxidation through glutathione (GSH)-dependent reduction of phospholipid hydroperoxides to corresponding al ...	This is the C-terminal domain of 1-Cys peroxiredoxin (1-cysPrx), a member of the peroxiredoxin superfamily which protect cells against membrane oxidation through glutathione (GSH)-dependent reduction of phospholipid hydroperoxides to corresponding alcohols [1]. The C-terminal domain is crucial for providing the extra cysteine necessary for dimerisation of the whole molecule. Loss of the enzyme's peroxidase activity is associated with oxidation of the catalytic cysteine, upstream of this domain; and glutathionylation, presumably through its disruption of protein structure, facilitates access for GSH, resulting in spontaneous reduction of the mixed disulfide to the sulfhydryl and consequent activation of the enzyme [2]. The domain is associated with family AhpC-TSA, Pfam:PF00578, which carries the catalytic cysteine.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, E, F, I A, B, E, F, I, J	Peroxiredoxin	peroxidase activity oxidoreductase activity thioredoxin-dependent peroxiredoxin activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor catalytic activity peroxiredoxin activity	cell redox homeostasis cellular homeostasis homeostatic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol
C, D, G, H, K C, D, G, H, K, L	Peroxiredoxin	peroxidase activity oxidoreductase activity thioredoxin-dependent peroxiredoxin activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor catalytic activity peroxiredoxin activity	cell redox homeostasis cellular homeostasis homeostatic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, E, F, I A, B, E, F, I, J	IPR019479	Peroxiredoxin, C-terminal	Domain
A, B, E, F, I A, B, E, F, I, J	IPR024706	Peroxiredoxin, AhpC-type	Family
A, B, E, F, I A, B, E, F, I, J	IPR013766	Thioredoxin domain	Domain
A, B, E, F, I A, B, E, F, I, J	IPR045020	1-Cys peroxiredoxin	Family
A, B, E, F, I A, B, E, F, I, J	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily
A, B, E, F, I A, B, E, F, I, J	IPR000866	Alkyl hydroperoxide reductase subunit C/ Thiol specific antioxidant	Domain
A, B, E, F, I A, B, E, F, I, J	IPR022915	Peroxiredoxin, TDXH subfamily	Family
C, D, G, H, K C, D, G, H, K, L	IPR019479	Peroxiredoxin, C-terminal	Domain
C, D, G, H, K C, D, G, H, K, L	IPR024706	Peroxiredoxin, AhpC-type	Family
C, D, G, H, K C, D, G, H, K, L	IPR013766	Thioredoxin domain	Domain
C, D, G, H, K C, D, G, H, K, L	IPR045020	1-Cys peroxiredoxin	Family
C, D, G, H, K C, D, G, H, K, L	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily
C, D, G, H, K C, D, G, H, K, L	IPR000866	Alkyl hydroperoxide reductase subunit C/ Thiol specific antioxidant	Domain
C, D, G, H, K C, D, G, H, K, L	IPR022915	Peroxiredoxin, TDXH subfamily	Family

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 R01GM133198.