Annotations: 3FBI

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Mediator of RNA polymerase II transcription subunit 31	8047464	4005652	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Mediator of RNA polymerase II transcription subunit 31	8105980	3002846	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Mediator of RNA polymerase II transcription subunit 31	8105980	3002846	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	PF05983	e3fbiA1	A: a+b complex topology	X: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	H: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	T: Mediator of RNA polymerase II transcription submodule Med7N/31	F: PF05983	ECOD (1.6)
C	PF05983	e3fbiC2	A: a+b complex topology	X: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	H: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	T: Mediator of RNA polymerase II transcription submodule Med7N/31	F: PF05983	ECOD (1.6)
B	PF05983	e3fbiB1	A: a+b complex topology	X: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	H: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	T: Mediator of RNA polymerase II transcription submodule Med7N/31	F: PF05983	ECOD (1.6)
D	PF05983	e3fbiD1	A: a+b complex topology	X: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	H: Mediator of RNA polymerase II transcription submodule Med7N/31 (From Topology)	T: Mediator of RNA polymerase II transcription submodule Med7N/31	F: PF05983	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.140.1520	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
C	6.10.140.1520	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
B	1.10.10.1340	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Mediator of RNA polymerase II, submodule Med31 (Soh1)	CATH (4.3.0)
D	1.10.10.1340	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Mediator of RNA polymerase II, submodule Med31 (Soh1)	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF05983	MED7 protein (Med7)	MED7 protein	-	Family
B, D	PF05669	SOH1 (Med31)	SOH1	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Mediator of RNA polymerase II transcription subunit 7	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 transcription preinitiation complex assembly cellular component organization cellular component biogenesis protein-DNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization protein-DNA complex assembly RNA polymerase II preinitiation complex assembly regulation of DNA-templated transcription elongation regulation of transcription elongation by RNA polymerase II transcription elongation by RNA polymerase II positive regulation of transcription elongation by RNA polymerase II positive regulation of DNA-templated transcription, elongation DNA-templated transcription elongation negative regulation of biological process negative regulation of cellular metabolic process negative regulation of RNA biosynthetic process negative regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process negative regulation of cellular biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of RNA metabolic process negative regulation of cellular process negative regulation of macromolecule metabolic process negative regulation of biosynthetic process	RNA polymerase II transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure core mediator complex nucleus nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle organelle mediator complex
B, D	Mediator of RNA polymerase II transcription subunit 31	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 transcription preinitiation complex assembly cellular component organization cellular component biogenesis protein-DNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization protein-DNA complex assembly RNA polymerase II preinitiation complex assembly cellular response to stimulus response to stimulus DNA metabolic process cellular response to stress DNA damage response response to stress DNA repair regulation of DNA-templated transcription elongation regulation of transcription elongation by RNA polymerase II transcription elongation by RNA polymerase II positive regulation of transcription elongation by RNA polymerase II positive regulation of DNA-templated transcription, elongation DNA-templated transcription elongation sexual reproduction homologous recombination reproductive process meiotic cell cycle DNA recombination meiotic cell cycle process meiotic gene conversion meiosis I cell cycle process cell cycle gene conversion cell cycle process	RNA polymerase II transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure core mediator complex nucleus nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle organelle mediator complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR037212	Mediator complex, subunit Med7/Med21-like	Homologous Superfamily
A, C	IPR009244	Mediator complex, subunit Med7	Family
A, C	IPR044888	Mediator complex, subunit Med7 superfmaily	Homologous Superfamily
B, D	IPR008831	Mediator complex, subunit Med31	Family
B, D	IPR038089	Mediator of RNA polymerase II, subunit Med31 superfamily	Homologous Superfamily

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.