Annotations: 3U1A

N-terminal 81-aa fragment of smooth muscle tropomyosin alpha

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
D	d3u1ad1	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	automated matches	automated matches	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d3u1ad2	Artifacts	Tags	Tags	Tags	N-terminal Tags	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d3u1ac1	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	automated matches	automated matches	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d3u1ac2	Artifacts	Tags	Tags	Tags	N-terminal Tags	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d3u1ab1	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	automated matches	automated matches	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d3u1ab2	Artifacts	Tags	Tags	Tags	N-terminal Tags	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
A	d3u1aa1	Coiled coil proteins	Parallel coiled-coil	Tropomyosin	automated matches	automated matches	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
A	d3u1aa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	Tropomyosin	8033888	3001691	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Tropomyosin	8033888	3001691	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Tropomyosin	8033888	3001691	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Tropomyosin	8033888	3001691	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	Peptidase_C11	e3u1aA01	A: beta barrels	X: Voltage-gated ion channels	H: Voltage-gated ion channels	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: Peptidase_C11	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	1.20.5.340	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
C	1.20.5.340	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
B	1.20.5.340	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
A	1.20.5.340	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	smooth muscle tropomyosin alpha	protein heterodimerization activity protein binding binding protein dimerization activity cytoskeletal protein binding actin binding protein-containing complex binding actin filament binding identical protein binding protein homodimerization activity	cellular component organization organelle organization actin cytoskeleton organization actin filament organization actin filament-based process cellular process cellular component organization or biogenesis supramolecular fiber organization cytoskeleton organization heart process multicellular organismal process system process circulatory system process cardiac muscle contraction cellular component organization organelle organization actin cytoskeleton organization actin filament organization actin filament-based process cellular process cellular component organization or biogenesis supramolecular fiber organization cytoskeleton organization heart process multicellular organismal process system process circulatory system process cardiac muscle contraction heart contraction muscle contraction muscle system process blood circulation striated muscle contraction	polymeric cytoskeletal fiber intracellular anatomical structure actin filament intracellular membraneless organelle actin cytoskeleton intracellular organelle cellular anatomical structure cytoskeleton organelle membraneless organelle supramolecular fiber supramolecular polymer supramolecular complex cell periphery polymeric cytoskeletal fiber intracellular anatomical structure actin filament intracellular membraneless organelle actin cytoskeleton intracellular organelle cellular anatomical structure cytoskeleton organelle membraneless organelle supramolecular fiber supramolecular polymer supramolecular complex cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR000533	Tropomyosin	Family

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.