Annotations: 3TWM

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF01149	e3twmA1	A: beta barrels	X: MutM N-terminal domain-like	H: N-terminal domain of MutM-like DNA repair proteins (From Topology)	T: N-terminal domain of MutM-like DNA repair proteins	F: PF01149	ECOD (1.6)
A	PF06831	e3twmA3	A: alpha arrays	X: HhH/H2TH	H: H2TH (From Topology)	T: H2TH	F: PF06831	ECOD (1.6)
A	PF21218	e3twmA2	A: few secondary structure elements	X: Glucocorticoid receptor-like	H: C-terminal, Zn-finger domain of MutM-like DNA repair proteins (From Topology)	T: C-terminal, Zn-finger domain of MutM-like DNA repair proteins	F: PF21218	ECOD (1.6)
B	PF01149	e3twmB9	A: beta barrels	X: MutM N-terminal domain-like	H: N-terminal domain of MutM-like DNA repair proteins (From Topology)	T: N-terminal domain of MutM-like DNA repair proteins	F: PF01149	ECOD (1.6)
B	PF06831	e3twmB1	A: alpha arrays	X: HhH/H2TH	H: H2TH (From Topology)	T: H2TH	F: PF06831	ECOD (1.6)
B	PF21218	e3twmB3	A: few secondary structure elements	X: Glucocorticoid receptor-like	H: C-terminal, Zn-finger domain of MutM-like DNA repair proteins (From Topology)	T: C-terminal, Zn-finger domain of MutM-like DNA repair proteins	F: PF21218	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.190.10	Alpha Beta	Alpha-Beta Barrel	N-terminal domain of MutM-like DNA repair proteins	MutM-like, N-terminal	CATH (4.3.0)
A	1.10.8.50	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
B	3.20.190.10	Alpha Beta	Alpha-Beta Barrel	N-terminal domain of MutM-like DNA repair proteins	MutM-like, N-terminal	CATH (4.3.0)
B	1.10.8.50	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF06831	Formamidopyrimidine-DNA glycosylase H2TH domain (H2TH)	Formamidopyrimidine-DNA glycosylase H2TH domain	Formamidopyrimidine-DNA glycosylase (Fpg) is a DNA repair enzyme that excises oxidised purines from damaged DNA. This family is the central domain containing the DNA-binding helix-two turn-helix domain [1].	Domain
A, B	PF21218	Formamidopyrimidine-DNA glycosylase-like, C-terminal domain (Fpg-like_C)	Formamidopyrimidine-DNA glycosylase-like, C-terminal domain	This domain is found in Formamidopyrimidine-DNA glycosylase-like from Arabidopsis thaliana (Fpg) and similar proteins from plants. Fpg is involved in base excision repair of DNA damaged by oxidation or by mutagenic agents. It catalyses the hydrolysis ...	This domain is found in Formamidopyrimidine-DNA glycosylase-like from Arabidopsis thaliana (Fpg) and similar proteins from plants. Fpg is involved in base excision repair of DNA damaged by oxidation or by mutagenic agents. It catalyses the hydrolysis of the N-glycosylic bond between the damaged base and the deoxyribose (glycosylase activity) before cleaving the DNA backbone (lyase activity). This entry represents the C-terminal domain, which shows four alpha- helices, two of them forming the helix-two-turn-helix (H2TH) motif, and two antiparallel beta-strands involved in a structural motif mimicking an antiparallel beta-hairpin zinc finger [1].	Domain
A, B	PF01149	Formamidopyrimidine-DNA glycosylase N-terminal domain (Fapy_DNA_glyco)	Formamidopyrimidine-DNA glycosylase N-terminal domain	Formamidopyrimidine-DNA glycosylase (Fpg) is a DNA repair enzyme that excises oxidised purines from damaged DNA. This family is the N-terminal domain contains eight beta-strands, forming a beta-sandwich with two alpha-helices parallel to its edges [1 ...	Formamidopyrimidine-DNA glycosylase (Fpg) is a DNA repair enzyme that excises oxidised purines from damaged DNA. This family is the N-terminal domain contains eight beta-strands, forming a beta-sandwich with two alpha-helices parallel to its edges [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Formamidopyrimidine-DNA glycosylase 1	DNA-(apurinic or apyrimidinic site) endonuclease activity catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid class I DNA-(apurinic or apyrimidinic site) endonuclease activity lyase activity catalytic activity carbon-oxygen lyase activity hydrolase activity, acting on glycosyl bonds hydrolase activity DNA N-glycosylase activity hydrolase activity, hydrolyzing N-glycosyl compounds cation binding transition metal ion binding zinc ion binding DNA-(apurinic or apyrimidinic site) endonuclease activity catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid class I DNA-(apurinic or apyrimidinic site) endonuclease activity lyase activity catalytic activity carbon-oxygen lyase activity hydrolase activity, acting on glycosyl bonds hydrolase activity DNA N-glycosylase activity hydrolase activity, hydrolyzing N-glycosyl compounds cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding oxidized base lesion DNA N-glycosylase activity oxidized purine nucleobase lesion DNA N-glycosylase activity DNA binding organic cyclic compound binding damaged DNA binding nucleic acid binding	cellular response to stimulus response to stimulus primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process cellular response to stress DNA damage response response to stress metabolic process cellular process macromolecule metabolic process cellular response to stimulus response to stimulus primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process cellular response to stress DNA damage response response to stress metabolic process cellular process macromolecule metabolic process DNA repair base-excision repair response to oxidative stress	membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle nucleus intracellular membrane-bounded organelle cellular anatomical entity
C, E	5'-D(APGPCPGPTPCPCPAP(3DR)PGPTPCPTPAPCPC)-3'	-	-	-
D, F	5'-D(TPGPGPTPAPGPAPCPGPTPGPGPAPCPGPC)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR035937	MutM-like, N-terminal	Homologous Superfamily
A, B	IPR012319	Formamidopyrimidine-DNA glycosylase, catalytic domain	Domain
A, B	IPR049332	Formamidopyrimidine-DNA glycosylase-like, C-terminal domain	Domain
A, B	IPR020629	Formamidopyrimidine-DNA glycosylase	Family
A, B	IPR015886	DNA glycosylase/AP lyase, H2TH DNA-binding	Domain
A, B	IPR010979	Small ribosomal subunit protein uS13-like, H2TH	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.