4IMI

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)
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)
B	SCOP2B Superfamily	Rhodanese/Cell cycle control phosphatase	8095912	3000320	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Rhodanese/Cell cycle control phosphatase	8095912	3000320	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)
C	PF11935	e4imiC1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF11935	ECOD (1.6)
A	PF11935	e4imiA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF11935	ECOD (1.6)
B	PF04722	e4imiB1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Phosphotyrosine protein phosphatases I-like	F: PF04722	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)
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)

Protein Family Annotation Pfam Database Homepage

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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
A, C	IPR011989	Armadillo-like helical	Homologous Superfamily
B, D	IPR006811	RNA polymerase II subunit A	Family

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 R01GM133198.