4IMI | pdb_00004imi

Novel Modifications on C-terminal Domain of RNA Polymerase II can Fine- tune the Phosphatase Activity of Ssu72.

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
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	Rhodanese/Cell cycle control phosphatase	8095912	3000320	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Rhodanese/Cell cycle control phosphatase	8095912	3000320	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	ARM repeat-like	8093028	3000116	SCOP2B (2022-06-29)
A	SCOP2 Family	Symplekin, N-terminal domain-like	8047136	4005463	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ARM repeat-like	8093028	3000116	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ssu72	e4imiB1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Phosphotyrosine protein phosphatases I-like	F: Ssu72	ECOD (1.6)
C	DUF3453	e4imiC1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: DUF3453	ECOD (1.6)
A	DUF3453	e4imiA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: DUF3453	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
D	6.10.140.550	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
B	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
B	6.10.140.550	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
C	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)
A	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF04722	Ssu72-like protein (Ssu72)	Ssu72-like protein	-	Family
A, C	PF11935	Symplekin/PTA1 N-terminal (SYMPK_PTA1_N)	Symplekin/PTA1 N-terminal	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth F]	CTD	-	-	-
B, D	CG14216	phosphoric ester hydrolase activity phosphoprotein phosphatase activity protein serine/threonine phosphatase activity RNA polymerase II CTD heptapeptide repeat modifying activity catalytic activity, acting on a protein RNA polymerase II CTD heptapeptide repeat phosphatase activity hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity	mRNA 3'-end processing RNA metabolic process primary metabolic process 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 3'-end processing mRNA 3'-end processing RNA metabolic process primary metabolic process 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 3'-end processing metabolic process cellular process RNA processing macromolecule metabolic process DNA-templated transcription termination DNA-templated transcription transcription by RNA polymerase II termination of RNA polymerase II transcription	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure organelle mRNA cleavage and polyadenylation specificity factor complex mRNA cleavage factor complex
A, C	Symplekin	RNA binding binding nucleic acid binding	mRNA 3'-end processing co-transcriptional RNA 3'-end processing, cleavage and polyadenylation pathway RNA metabolic process co-transcriptional mRNA 3'-end processing, cleavage and polyadenylation pathway primary metabolic process 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 mRNA 3'-end processing co-transcriptional RNA 3'-end processing, cleavage and polyadenylation pathway RNA metabolic process co-transcriptional mRNA 3'-end processing, cleavage and polyadenylation pathway primary metabolic process 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 3'-end processing metabolic process cellular process RNA processing macromolecule metabolic process histone mRNA metabolic process mRNA 3'-end processing by stem-loop binding and cleavage	cell-cell junction cellular anatomical structure tight junction anchoring junction cell junction tricellular tight junction membrane-bounded organelle intracellular anatomical structure histone locus body nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen cell-cell junction cellular anatomical structure tight junction anchoring junction cell junction tricellular tight junction membrane-bounded organelle intracellular anatomical structure histone locus body nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen ribonucleoprotein granule intracellular organelle nuclear body nucleoplasm organelle lumen organelle membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen protein-containing complex nuclear protein-containing complex mRNA cleavage and polyadenylation specificity factor complex mRNA cleavage factor complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR006811	RNA polymerase II subunit A	Family
A, C	IPR011989	Armadillo-like helical	Homologous Superfamily
A, C	IPR022075	Symplekin C-terminal	Domain
A, C	IPR016024	Armadillo-type fold	Homologous Superfamily
A, C	IPR021850	Symplekin/Pta1	Family
A, C	IPR032460	Symplekin/Pta1, N-terminal	Domain

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
E [auth F]	SEP	Parent Component: SER RESID: AA0037 PSI-MOD : O-phospho-L-serine MOD:00046
E [auth F]	TPO	Parent Component: THR RESID: AA0037 , AA0038 PSI-MOD : O-phospho-L-serine MOD:00046 , O-phospho-L-threonine MOD:00047

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.