Annotations: 4PZ6

PCE1 guanylyltransferase bound to SER2/SER5 phosphorylated RNA pol II CTD

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Terpene_syn_C_2	e4pz6B1	A: beta barrels	X: OB-fold	H: SH3	T: SH3	F: Terpene_syn_C_2	ECOD (v294.2)
A	Terpene_syn_C_2	e4pz6A1	A: beta barrels	X: OB-fold	H: SH3	T: SH3	F: Terpene_syn_C_2	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
B	3.30.470.30	Alpha Beta	2-Layer Sandwich	D-amino Acid Aminotransferase	Chain A, domain 1	CATH (4.3.0)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
A	3.30.470.30	Alpha Beta	2-Layer Sandwich	D-amino Acid Aminotransferase	Chain A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF03919	mRNA capping enzyme, C-terminal domain (mRNA_cap_C)	mRNA capping enzyme, C-terminal domain		Domain
A, B	PF01331	mRNA capping enzyme, catalytic domain (mRNA_cap_enzyme)	mRNA capping enzyme, catalytic domain	This family represents the ATP binding catalytic domain of the mRNA capping enzyme.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth P], D [auth Q]	DNA-directed RNA polymerase II subunit rpb1	chromatin-protein adaptor activity protein-macromolecule adaptor activity molecular adaptor activity DNA binding binding nucleic acid binding DNA-directed RNA polymerase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity nucleotidyltransferase activity catalytic activity chromatin-protein adaptor activity protein-macromolecule adaptor activity molecular adaptor activity DNA binding binding nucleic acid binding DNA-directed RNA polymerase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cation binding ion binding metal ion binding small molecule binding	phosphate ion homeostasis intracellular phosphate ion homeostasis cellular homeostasis inorganic ion homeostasis chemical homeostasis homeostatic process intracellular chemical homeostasis RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription termination nucleic acid metabolic process phosphate ion homeostasis intracellular phosphate ion homeostasis cellular homeostasis inorganic ion homeostasis chemical homeostasis homeostatic process intracellular chemical homeostasis RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription termination nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II biosynthetic process metabolic process cellular process macromolecule metabolic process termination of RNA polymerase II transcription lncRNA processing co-transcriptional RNA 3'-end processing, cleavage and polyadenylation pathway co-transcriptional lncRNA 3' end processing, cleavage and polyadenylation pathway RNA 3'-end processing RNA processing DNA-templated transcription initiation transcription initiation at RNA polymerase II promoter mRNA transcription by RNA polymerase II mRNA transcription mRNA metabolic process transcription elongation by RNA polymerase II DNA-templated transcription elongation 7-methylguanosine mRNA capping 7-methylguanosine RNA capping RNA capping mRNA processing RNA 5'-end processing	membrane-bounded organelle RNA polymerase II, holoenzyme protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex transferase complex intracellular organelle lumen intracellular organelle cellular anatomical structure nucleoplasm RNA polymerase II, core complex catalytic complex membrane-bounded organelle RNA polymerase II, holoenzyme protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex transferase complex intracellular organelle lumen intracellular organelle cellular anatomical structure nucleoplasm RNA polymerase II, core complex catalytic complex intracellular membrane-bounded organelle transferase complex, transferring phosphorus-containing groups nuclear DNA-directed RNA polymerase complex organelle lumen organelle RNA polymerase complex DNA-directed RNA polymerase complex intracellular protein-containing complex nuclear lumen membraneless organelle intracellular membraneless organelle chromatin chromosome
A, B	mRNA-capping enzyme subunit alpha	RNA polymerase binding protein binding binding RNA polymerase II complex binding RNA polymerase II C-terminal domain binding RNA polymerase core enzyme binding enzyme binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding RNA polymerase binding protein binding binding RNA polymerase II complex binding RNA polymerase II C-terminal domain binding RNA polymerase core enzyme binding enzyme binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding guanylyltransferase activity mRNA guanylyltransferase activity RNA guanylyltransferase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid transferase activity catalytic activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups guanyl nucleotide binding GTP binding guanyl ribonucleotide binding	7-methylguanosine mRNA capping RNA metabolic process primary metabolic process 7-methylguanosine RNA capping RNA capping gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process 7-methylguanosine mRNA capping RNA metabolic process primary metabolic process 7-methylguanosine RNA capping RNA capping gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process RNA 5'-end processing metabolic process cellular process RNA processing macromolecule metabolic process	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth P], D [auth Q]	IPR007081	RNA polymerase Rpb1, domain 5	Domain
C [auth P], D [auth Q]	IPR045867	DNA-directed RNA polymerase, subunit beta-prime	Family
C [auth P], D [auth Q]	IPR007075	RNA polymerase Rpb1, domain 6	Domain
C [auth P], D [auth Q]	IPR000684	RNA polymerase II, heptapeptide repeat, eukaryotic	Repeat
C [auth P], D [auth Q]	IPR007083	RNA polymerase Rpb1, domain 4	Domain
C [auth P], D [auth Q]	IPR044893	RNA polymerase Rpb1, clamp domain superfamily	Homologous Superfamily
C [auth P], D [auth Q]	IPR006592	RNA polymerase, N-terminal	Domain
C [auth P], D [auth Q]	IPR007066	RNA polymerase Rpb1, domain 3	Domain
C [auth P], D [auth Q]	IPR007073	RNA polymerase Rpb1, domain 7	Domain
C [auth P], D [auth Q]	IPR042102	RNA polymerase Rpb1, domain 3 superfamily	Homologous Superfamily
C [auth P], D [auth Q]	IPR038593	RNA polymerase Rpb1, domain 7 superfamily	Homologous Superfamily
C [auth P], D [auth Q]	IPR000722	RNA polymerase, alpha subunit	Domain
C [auth P], D [auth Q]	IPR038120	RNA polymerase Rpb1, funnel domain superfamily	Homologous Superfamily
C [auth P], D [auth Q]	IPR007080	RNA polymerase Rpb1, domain 1	Domain
A, B	IPR001339	mRNA capping enzyme, adenylation domain	Domain
A, B	IPR051029	mRNA_Capping_Enz/RNA_Phosphat	Unknown
A, B	IPR017075	mRNA capping enzyme, alpha subunit	Family
A, B	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A, B	IPR013846	mRNA capping enzyme, C-terminal domain	Domain

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
C [auth P], D [auth Q]	SEP	Parent Component: SER : AA0037 : O-phospho-L-serine MOD:00046

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.