Annotations: 2D3E

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2d3ea1	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	Tropomyosin	Tropomyosin	baker's yeast, rabbit (Saccharomyces cerevisiae ) [TaxId: 4932 ], baker's yeast, rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ],	SCOPe (2.08)
B	d2d3eb_	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	Tropomyosin	Tropomyosin	baker's yeast, rabbit (Saccharomyces cerevisiae ) [TaxId: 4932 ], baker's yeast, rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ],	SCOPe (2.08)
C	d2d3ec_	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	Tropomyosin	Tropomyosin	baker's yeast, rabbit (Saccharomyces cerevisiae ) [TaxId: 4932 ], baker's yeast, rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ],	SCOPe (2.08)
D	d2d3ed_	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	Tropomyosin	Tropomyosin	baker's yeast, rabbit (Saccharomyces cerevisiae ) [TaxId: 4932 ], baker's yeast, rabbit (Oryctolagus cuniculus ) [TaxId: 9986 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Tropomyosin	8027158	4003866	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Tropomyosin	8039537	3001691	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Tropomyosin	8039537	3001691	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Tropomyosin	8039537	3001691	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Tropomyosin	8039537	3001691	SCOP2B (2022-06-29)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.5.170	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
B	1.20.5.170	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
C	1.20.5.170	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
D	1.20.5.170	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00261	Tropomyosin (Tropomyosin)	Tropomyosin	-	Coiled-coil
A, B, C, D	PF07716	Basic region leucine zipper (bZIP_2)	Basic region leucine zipper	-	Coiled-coil

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	General control protein GCN4 and Tropomyosin 1 alpha chain	TFIID-class transcription factor complex binding transcription factor binding basal transcription machinery binding protein-containing complex binding protein binding binding basal RNA polymerase II transcription machinery binding general transcription initiation factor binding RNA polymerase II general transcription initiation factor binding RNA polymerase II-specific DNA-binding transcription factor binding DNA-binding transcription factor binding DNA binding sequence-specific DNA binding double-stranded DNA binding TFIID-class transcription factor complex binding transcription factor binding basal transcription machinery binding protein-containing complex binding protein binding binding basal RNA polymerase II transcription machinery binding general transcription initiation factor binding RNA polymerase II general transcription initiation factor binding RNA polymerase II-specific DNA-binding transcription factor binding DNA-binding transcription factor binding DNA binding sequence-specific DNA 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 chromatin binding transcription regulator activity DNA-binding transcription factor activity mediator complex binding DNA-binding transcription factor activity, RNA polymerase II-specific DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity identical protein binding protein heterodimerization activity protein dimerization activity cytoskeletal protein binding troponin I binding actin binding actin filament binding protein homodimerization activity	response to extracellular stimulus response to nutrient levels response to stimulus response to stress response to amino acid starvation response to external stimulus response to starvation positive regulation of cellular response to amino acid starvation positive regulation of cell communication cellular response to stimulus positive regulation of response to extracellular stimulus regulation of response to nutrient levels regulation of cellular process regulation of response to external stimulus response to extracellular stimulus response to nutrient levels response to stimulus response to stress response to amino acid starvation response to external stimulus response to starvation positive regulation of cellular response to amino acid starvation positive regulation of cell communication cellular response to stimulus positive regulation of response to extracellular stimulus regulation of response to nutrient levels regulation of cellular process regulation of response to external stimulus positive regulation of biological process regulation of cellular response to stress cellular response to amino acid starvation cell communication positive regulation of response to stimulus positive regulation of response to external stimulus cellular response to stress regulation of response to stress positive regulation of cellular process cellular response to external stimulus regulation of biological process biological regulation cellular response to starvation regulation of response to extracellular stimulus cellular response to nutrient levels regulation of response to stimulus regulation of cell communication cellular process cellular response to extracellular stimulus regulation of cellular response to amino acid starvation positive regulation of response to nutrient levels transcription preinitiation complex assembly positive regulation of macromolecule biosynthetic process regulation of primary metabolic process cellular component biogenesis nucleobase-containing compound metabolic process regulation of nitrogen compound metabolic process DNA-templated transcription positive regulation of metabolic process regulation of DNA-templated transcription initiation regulation of RNA metabolic process cellular component assembly transcription by RNA polymerase II heterocycle metabolic process 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 positive regulation of nucleobase-containing compound metabolic process cellular metabolic process cellular nitrogen compound 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 aromatic compound biosynthetic process organic cyclic compound biosynthetic process RNA polymerase II preinitiation complex assembly metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process regulation of RNA polymerase II transcription preinitiation complex assembly regulation of cellular component organization positive regulation of cellular component organization cellular biosynthetic process positive regulation of DNA-templated transcription RNA metabolic process positive regulation of cellular metabolic process cellular component organization protein-DNA complex organization RNA biosynthetic process nucleic acid biosynthetic process regulation of protein-containing complex assembly positive regulation of protein-containing complex assembly organic substance metabolic process positive regulation of biosynthetic process protein-containing complex assembly nitrogen compound metabolic process cellular component organization or biogenesis regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of RNA polymerase II transcription preinitiation complex assembly protein-containing complex organization positive regulation of cellular component biogenesis positive regulation of transcription initiation by RNA polymerase II protein-DNA complex assembly regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process heterocycle biosynthetic process gene expression regulation of cellular component biogenesis macromolecule biosynthetic process DNA-templated transcription initiation nucleic acid metabolic process regulation of cellular biosynthetic process positive regulation of nitrogen compound metabolic process positive regulation of RNA biosynthetic process regulation of transcription initiation by RNA polymerase II cellular aromatic compound metabolic process positive regulation of cellular biosynthetic process protein localization localization cellular localization protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to nuclear periphery protein localization to nucleus amino acid biosynthetic process amino acid metabolic process cellular response to nitrogen compound response to organic substance nitrogen catabolite regulation of transcription regulation of nitrogen utilization intracellular nitrogen homeostasis nitrogen catabolite activation of transcription from RNA polymerase II promoter response to organonitrogen compound response to nitrogen compound cellular response to organonitrogen compound chemical homeostasis response to chemical homeostatic process cellular response to endogenous stimulus nitrogen catabolite activation of transcription intracellular chemical homeostasis cellular response to organic substance nitrogen catabolite regulation of transcription from RNA polymerase II promoter response to endogenous stimulus response to nutrient nitrogen utilization cellular response to chemical stimulus cellular homeostasis cellular response to nutrient signaling signal transduction intracellular signal transduction negative regulation of biological process negative regulation of nitrogen compound metabolic 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 regulation of ribosomal protein gene transcription by RNA polymerase II negative regulation of ribosomal protein gene transcription by RNA polymerase II	RNA polymerase II transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle organelle polymeric cytoskeletal fiber actin filament actin cytoskeleton RNA polymerase II transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle organelle polymeric cytoskeletal fiber actin filament actin cytoskeleton cytoskeleton intracellular non-membrane-bounded organelle supramolecular fiber supramolecular polymer supramolecular complex non-membrane-bounded organelle cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR004827	Basic-leucine zipper domain	Domain
A, B, C, D	IPR046347	Basic-leucine zipper domain superfamily	Homologous Superfamily
A, B, C, D	IPR000533	Tropomyosin	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.