Annotations: 3C0T

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Med18-like	8045293	4004394	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CYTH-like phosphatases	8090012	3001426	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)
A	PF09637	e3c0tA1	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: PF09637	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.320.10	Mainly Beta	Beta Barrel	Hypothetical Protein Pfu-838710-001	Hypothetical Protein Pfu-838710-001	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09637	Med18 protein (Med18)	Med18 protein	Med18 is one subunit of Mediator, a head-module multiprotein complex, that stimulates basal RNA polymerase II (Pol II) transcription. Med18 consists of an eight-stranded beta-barrel with a central pore and three flanking helices. It complexes with Me ...	Med18 is one subunit of Mediator, a head-module multiprotein complex, that stimulates basal RNA polymerase II (Pol II) transcription. Med18 consists of an eight-stranded beta-barrel with a central pore and three flanking helices. It complexes with Med8 and Med20 proteins by forming a heterodimer of two-fold symmetry with Med20 and binding the C-terminal alpha-helix region of Med8 across the top of its barrel. This complex creates a multipartite TBP-binding site that can be modulated by transcriptional activators [1].	Domain
B	PF10232	Mediator of RNA polymerase II transcription complex subunit 8 (Med8)	Mediator of RNA polymerase II transcription complex subunit 8	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Mediator of RNA polymerase II transcription subunit 18	transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity	regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process DNA-templated transcription positive regulation of metabolic process regulation of DNA-templated transcription initiation regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process transcription initiation at RNA polymerase II promoter regulation of transcription by RNA polymerase II regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process DNA-templated transcription positive regulation of metabolic process regulation of DNA-templated transcription initiation regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process transcription initiation at RNA polymerase II promoter regulation of transcription by RNA polymerase II regulation of biological process positive regulation of nucleobase-containing compound metabolic process cellular metabolic process primary metabolic process regulation of cellular metabolic process positive regulation of transcription by RNA polymerase II positive regulation of DNA-templated transcription initiation positive regulation of RNA metabolic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process cellular biosynthetic process positive regulation of DNA-templated transcription positive regulation of biological process RNA metabolic process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process positive regulation of biosynthetic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of transcription initiation by RNA polymerase II biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process DNA-templated transcription initiation regulation of cellular biosynthetic process positive regulation of RNA biosynthetic process regulation of transcription initiation by RNA polymerase II cellular process positive regulation of cellular biosynthetic process DNA-templated transcription termination termination of RNA polymerase II transcription	membrane-bounded organelle intracellular organelle protein-containing complex intracellular anatomical structure organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity mediator complex RNA polymerase II transcription regulator complex core mediator complex transcription regulator complex
B	Mediator of RNA polymerase II transcription subunit 8	DNA binding sequence-specific DNA binding binding double-stranded DNA binding nucleic acid binding RNA polymerase II transcription regulatory region sequence-specific DNA binding cis-regulatory region sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding organic cyclic compound binding transcription regulatory region nucleic acid binding RNA polymerase II cis-regulatory region sequence-specific DNA binding transcription coactivator activity transcription regulator activity DNA binding sequence-specific DNA binding binding double-stranded DNA binding nucleic acid binding RNA polymerase II transcription regulatory region sequence-specific DNA binding cis-regulatory region sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding organic cyclic compound binding transcription regulatory region nucleic acid binding RNA polymerase II cis-regulatory region sequence-specific DNA binding transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity	regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process DNA-templated transcription positive regulation of metabolic process regulation of DNA-templated transcription initiation regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process transcription initiation at RNA polymerase II promoter regulation of transcription by RNA polymerase II regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process DNA-templated transcription positive regulation of metabolic process regulation of DNA-templated transcription initiation regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process transcription initiation at RNA polymerase II promoter regulation of transcription by RNA polymerase II regulation of biological process positive regulation of nucleobase-containing compound metabolic process cellular metabolic process primary metabolic process regulation of cellular metabolic process positive regulation of transcription by RNA polymerase II positive regulation of DNA-templated transcription initiation positive regulation of RNA metabolic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process cellular biosynthetic process positive regulation of DNA-templated transcription positive regulation of biological process RNA metabolic process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process positive regulation of biosynthetic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of transcription initiation by RNA polymerase II biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process DNA-templated transcription initiation regulation of cellular biosynthetic process positive regulation of RNA biosynthetic process regulation of transcription initiation by RNA polymerase II cellular process positive regulation of cellular biosynthetic 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 mediator complex RNA polymerase II transcription regulator complex core mediator complex transcription regulator complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR019095	Mediator complex, subunit Med18	Family
B	IPR019364	Mediator complex, subunit Med8, fungi/metazoa	Family

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.