Annotations: 3OVA

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF09249	e3ovaA5	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: PAP/OAS1 substrate-binding domain	F: PF09249	ECOD (1.6)
A	PF21133	e3ovaA4	A: a+b two layers	X: Alpha-beta plaits	H: PAP/Archaeal CCA-adding enzyme, C-terminal domain (From Topology)	T: PAP/Archaeal CCA-adding enzyme, C-terminal domain	F: PF21133	ECOD (1.6)
A	PF01909	e3ovaA3	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: PF01909	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.1410.30	Mainly Alpha	Orthogonal Bundle	Poly(a)-polymerase, middle domain	CCA tRNA nucleotidyltransferase, domain 2	CATH (4.3.0)
A	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
A	3.30.70.590	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Poly(A) polymerase predicted RNA binding domain	CATH (4.3.0)
A	3.30.70.1550	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Archaeal tRNA CCA-adding enzyme catalytic domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21133	Archaeal CCA-adding enzyme, C-terminal domain (CAA_C_arc)	Archaeal CCA-adding enzyme, C-terminal domain	Archaeal CCA-adding enzyme builds and repairs the 3'-end of tRNA [1-4]. This is the C-terminal domain (tail) of CCA-adding enzyme, which serves as a ruler to ensure that only tRNAs and tRNA-like transcripts are substrates for the enzyme and also cont ...	Archaeal CCA-adding enzyme builds and repairs the 3'-end of tRNA [1-4]. This is the C-terminal domain (tail) of CCA-adding enzyme, which serves as a ruler to ensure that only tRNAs and tRNA-like transcripts are substrates for the enzyme and also contributes to the discrimination between stable and unstable RNA substrates [4].	Domain
A	PF01909	Nucleotidyltransferase domain (NTP_transf_2)	Nucleotidyltransferase domain	Members of this family belong to a large family of nucleotidyltransferases [1]. This family includes kanamycin nucleotidyltransferase (KNTase) which is a plasmid-coded enzyme responsible for some types of bacterial resistance to aminoglycosides. KNTa ...	Members of this family belong to a large family of nucleotidyltransferases [1]. This family includes kanamycin nucleotidyltransferase (KNTase) which is a plasmid-coded enzyme responsible for some types of bacterial resistance to aminoglycosides. KNTase in-activates antibiotics by catalysing the addition of a nucleotidyl group onto the drug.	Domain
A	PF09249	tRNA nucleotidyltransferase, second domain (tRNA_NucTransf2)	tRNA nucleotidyltransferase, second domain	Members of this family adopt a structure consisting of a five helical bundle core. They are predominantly found in Archaeal tRNA nucleotidyltransferase, following the catalytic nucleotidyltransferase domain [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CCA-adding enzyme	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding anion binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding cytidylyltransferase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA transferase activity nucleotidyltransferase activity catalytic activity CCA tRNA nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups RNA binding tRNA binding nucleic acid binding	nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process RNA metabolic process metabolic process primary metabolic process macromolecule metabolic process RNA repair nucleic acid metabolic process cellular biosynthetic process tRNA 3'-terminal CCA addition tRNA processing organic substance biosynthetic process RNA 3'-end processing nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process RNA metabolic process metabolic process primary metabolic process macromolecule metabolic process RNA repair nucleic acid metabolic process cellular biosynthetic process tRNA 3'-terminal CCA addition tRNA processing organic substance biosynthetic process RNA 3'-end processing RNA processing tRNA 3'-end processing cellular metabolic process gene expression macromolecule biosynthetic process tRNA metabolic process biosynthetic process ncRNA metabolic process nucleic acid catabolic process cellular process	-
B [auth C]	RNA (34-MER)	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011068	Nucleotidyltransferase, class I-like, C-terminal	Homologous Superfamily
A	IPR006116	2-5OAS/ClassI-CCAase, nucleotidyltransferase domain	Domain
A	IPR048833	CCA-adding enzyme, C-terminal domain	Domain
A	IPR042090	tRNA nucleotidyltransferase, domain 2	Homologous Superfamily
A	IPR043519	Nucleotidyltransferase superfamily	Homologous Superfamily
A	IPR015329	tRNA nucleotidyltransferase, substrate binding	Domain
A	IPR002934	Polymerase, nucleotidyl transferase domain	Domain
A	IPR008229	tRNA nucleotidyltransferase, archaea	Family

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.