3H3A

The complex structure of CCA-adding enzyme with CTP

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
B	PolyA_pol_RNAbd	e3h3aB6	A: alpha complex topology	X: PDEase-like	H: Poly A polymerase C-terminal region-like (From Topology)	T: Poly A polymerase C-terminal region-like	F: PolyA_pol_RNAbd	ECOD (1.6)
B	PolyA_pol	e3h3aB5	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: PolyA_pol	ECOD (1.6)
A	PolyA_pol_RNAbd	e3h3aA6	A: alpha complex topology	X: PDEase-like	H: Poly A polymerase C-terminal region-like (From Topology)	T: Poly A polymerase C-terminal region-like	F: PolyA_pol_RNAbd	ECOD (1.6)
A	PolyA_pol	e3h3aA5	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: PolyA_pol	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
B	1.10.110.30	Mainly Alpha	Orthogonal Bundle	Hydrophobic Seed Protein		CATH (4.3.0)
B	1.20.58.1960	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
B	1.10.246.80	Mainly Alpha	Orthogonal Bundle	Serum Albumin	Chain A, Domain 1	CATH (4.3.0)
A	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
A	1.10.110.30	Mainly Alpha	Orthogonal Bundle	Hydrophobic Seed Protein		CATH (4.3.0)
A	1.20.58.1960	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
A	1.10.246.80	Mainly Alpha	Orthogonal Bundle	Serum Albumin	Chain A, Domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF12627	Probable RNA and SrmB- binding site of polymerase A (PolyA_pol_RNAbd)	Probable RNA and SrmB- binding site of polymerase A	This region encompasses much of the RNA and SrmB binding motifs on polymerase A.	Domain
A, B	PF01743	Poly A polymerase head domain (PolyA_pol)	Poly A polymerase head domain	This family includes nucleic acid independent RNA polymerases, such as Poly(A) polymerase, which adds the poly (A) tail to mRNA EC:2.7.7.19. This family also includes the tRNA nucleotidyltransferase that adds the CCA to the 3' of the tRNA EC:2.7.7.25 ...	This family includes nucleic acid independent RNA polymerases, such as Poly(A) polymerase, which adds the poly (A) tail to mRNA EC:2.7.7.19. This family also includes the tRNA nucleotidyltransferase that adds the CCA to the 3' of the tRNA EC:2.7.7.25. This family is part of the nucleotidyltransferase superfamily.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	TRNA nucleotidyl transferase-related protein	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups RNA binding tRNA binding nucleic acid binding cation binding metal ion binding	RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR046342	CBS domain superfamily	Homologous Superfamily
A, B	IPR003156	DHHA1 domain	Domain
A, B	IPR001667	DDH domain	Domain
A, B	IPR043519	Nucleotidyltransferase superfamily	Homologous Superfamily
A, B	IPR000644	CBS domain	Domain
A, B	IPR002646	Poly A polymerase, head domain	Domain
A, B	IPR032828	tRNA nucleotidyltransferase/poly(A) polymerase, RNA and SrmB- binding domain	Domain
A, B	IPR038763	DHH phosphoesterase superfamily	Homologous Superfamily
A, B	IPR052390	tRNA Nucleotidyltransferase/Poly(A) Polymerase	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 R01GM157729.