4PN1

Structure of S. pombe Pct1 RNA triphosphatase in complex with the Spt5 CTD

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	mRNA triphosphatase CET1	8062148	4001381	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CYTH-like phosphatases	8062149	3001426	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	CYTH-like phosphatases	8062149	3001426	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	CYTH-like phosphatases	8062149	3001426	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	CYTH-like phosphatases	8062149	3001426	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	mRNA_triPase	e4pn1A1	A: a+b complex topology	X: mRNA triphosphatase CET1-related (From Topology)	H: mRNA triphosphatase CET1-related (From Topology)	T: mRNA triphosphatase CET1-related	F: mRNA_triPase	ECOD (1.6)
B	mRNA_triPase	e4pn1B1	A: a+b complex topology	X: mRNA triphosphatase CET1-related (From Topology)	H: mRNA triphosphatase CET1-related (From Topology)	T: mRNA triphosphatase CET1-related	F: mRNA_triPase	ECOD (1.6)
C	mRNA_triPase	e4pn1C1	A: a+b complex topology	X: mRNA triphosphatase CET1-related (From Topology)	H: mRNA triphosphatase CET1-related (From Topology)	T: mRNA triphosphatase CET1-related	F: mRNA_triPase	ECOD (1.6)
D	mRNA_triPase	e4pn1D1	A: a+b complex topology	X: mRNA triphosphatase CET1-related (From Topology)	H: mRNA triphosphatase CET1-related (From Topology)	T: mRNA triphosphatase CET1-related	F: mRNA_triPase	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.100.10	Alpha Beta	Alpha-Beta Barrel	mRNA Triphosphatase Cet1	Chain A	CATH (4.3.0)
B	3.20.100.10	Alpha Beta	Alpha-Beta Barrel	mRNA Triphosphatase Cet1	Chain A	CATH (4.3.0)
C	3.20.100.10	Alpha Beta	Alpha-Beta Barrel	mRNA Triphosphatase Cet1	Chain A	CATH (4.3.0)
D	3.20.100.10	Alpha Beta	Alpha-Beta Barrel	mRNA Triphosphatase Cet1	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF02940	mRNA capping enzyme, beta chain (mRNA_triPase)	mRNA capping enzyme, beta chain	The beta chain of mRNA capping enzyme has triphosphatase activity. The function of the capping enzyme also depends on the guanylyltransferase activity conferred by the alpha chain (see Pfam:PF01331)	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	mRNA-capping enzyme subunit beta	basal transcription machinery binding RNA polymerase binding protein binding binding RNA polymerase II complex binding basal RNA polymerase II transcription machinery binding RNA polymerase II C-terminal domain binding RNA polymerase core enzyme binding enzyme binding phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds polynucleotide 5'-phosphatase activity phosphatase activity hydrolase activity basal transcription machinery binding RNA polymerase binding protein binding binding RNA polymerase II complex binding basal RNA polymerase II transcription machinery binding RNA polymerase II C-terminal domain binding RNA polymerase core enzyme binding enzyme binding phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds polynucleotide 5'-phosphatase activity phosphatase activity hydrolase activity catalytic activity pyrophosphatase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity, acting on acid anhydrides mRNA 5'-triphosphate monophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity ATP-dependent activity	cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process 7-methylguanosine RNA capping RNA capping gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA 5'-end processing organic substance biosynthetic process cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process 7-methylguanosine RNA capping RNA capping gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA 5'-end processing organic substance biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process polynucleotide 5' dephosphorylation dephosphorylation phosphate-containing compound metabolic process phosphorus metabolic process mRNA processing nucleic acid biosynthetic process 7-methylguanosine mRNA capping mRNA metabolic process	membrane-bounded organelle intracellular organelle protein-containing complex intracellular anatomical structure organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity mRNA capping enzyme complex
E, F, G, H	Synthetic peptide	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR040343	RNA 5'-triphosphatase Cet1/Ctl1	Family
A, B, C, D	IPR037009	mRNA triphosphatase Cet1-like superfamily	Homologous Superfamily
A, B, C, D	IPR033469	CYTH-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR004206	mRNA triphosphatase Cet1-like	Domain

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.