Annotations: 3O2S

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	ARM repeat-like	8093027	3000116	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Rhodanese/Cell cycle control phosphatase	8095913	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)
A	PF11935	e3o2sA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF11935	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF11935	Symplekin/PTA1 N-terminal (SYMPK_PTA1_N)	Symplekin/PTA1 N-terminal	-	Repeat
B	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	Symplekin	-	regulation of protein binding regulation of molecular function negative regulation of protein binding negative regulation of binding regulation of binding biological regulation negative regulation of molecular function cell adhesion cellular process	intracellular organelle intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle cellular anatomical entity non-membrane-bounded organelle cytoplasm cytosol membrane-bounded organelle nuclear stress granule nucleus intracellular membrane-bounded organelle ribonucleoprotein granule intracellular organelle intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle cellular anatomical entity non-membrane-bounded organelle cytoplasm cytosol membrane-bounded organelle nuclear stress granule nucleus intracellular membrane-bounded organelle ribonucleoprotein granule supramolecular complex cell-cell junction apical junction complex bicellular tight junction tight junction anchoring junction cell junction cell periphery plasma membrane membrane protein-containing complex nuclear protein-containing complex mRNA cleavage and polyadenylation specificity factor complex mRNA cleavage factor complex membrane-enclosed lumen intracellular organelle lumen nuclear body nucleoplasm organelle lumen nuclear lumen
B	RNA polymerase II subunit A C-terminal domain phosphatase SSU72	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 RNA metabolic process DNA-templated transcription termination RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II organic substance metabolic process organic substance biosynthetic process cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression cellular biosynthetic process RNA metabolic process DNA-templated transcription termination RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II organic substance metabolic process organic substance biosynthetic process cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process termination of RNA polymerase II transcription co-transcriptional RNA 3'-end processing, cleavage and polyadenylation pathway co-transcriptional mRNA 3'-end processing, cleavage and polyadenylation pathway mRNA processing RNA 3'-end processing RNA processing mRNA 3'-end processing mRNA metabolic process nucleic acid catabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle protein-containing complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle organelle mRNA cleavage and polyadenylation specificity factor complex mRNA cleavage factor complex membrane-enclosed lumen intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle protein-containing complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle organelle mRNA cleavage and polyadenylation specificity factor complex mRNA cleavage factor complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

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

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q92797	chronic obstructive pulmonary disease gallbladder disease heart disease Malignant neoplasm of stomach ovarian cancer psoriasis gastric cancer hereditary diffuse gastric adenocarcinoma myocardial infarction pancreatic intraductal papillary-mucinous carcinoma gastric neoplasm malignant colon neoplasm osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia
B	Pharos: Q9NP77	large cell medulloblastoma ovarian cancer medulloblastoma osteosarcoma

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.