1YTZ | pdb_00001ytz

Crystal structure of skeletal muscle troponin in the Ca2+-activated state

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)
B [auth I]	d1ytzi1	Coiled coil proteins	Parallel coiled-coil	Troponin coil-coiled subunits	Troponin I	Troponin I	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d1ytzc_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Troponin C	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
A [auth T]	d1ytzt1	Coiled coil proteins	Parallel coiled-coil	Troponin coil-coiled subunits	Troponin T	Troponin T	chicken (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)
B [auth I]	SCOP2 Family	Troponin I	8022502	4003914	SCOP2 (2022-06-29)
B [auth I]	SCOP2 Superfamily	Troponin coil-coiled subunits	8034882	3001782	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	EF-hand	8037317	3001983	SCOP2B (2022-06-29)
A [auth T]	SCOP2 Family	Troponin T	8022503	4003913	SCOP2 (2022-06-29)
A [auth T]	SCOP2 Superfamily	Troponin coil-coiled subunits	8034883	3001782	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)
C	EF-hand_7_1	e1ytzC3	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_1	ECOD (1.6)
C	EF-hand_7_5	e1ytzC4	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_5	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth I]	1.20.5.350	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Troponin complex, TnI/TnT subunit	CATH (4.3.0)
C	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)
A [auth T]	1.20.5.350	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Troponin complex, TnI/TnT subunit	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth I]	PF00992	Troponin (Troponin)	Troponin	-	Family
C	PF13499	EF-hand domain pair (EF-hand_7)	EF-hand domain pair		Domain
C	PF00036	EF hand domain (EF-hand_1)	EF hand domain	The EF-hands can be divided into two classes: signalling proteins and buffering/transport proteins. The first group is the largest and includes the most well-known members of the family such as calmodulin, troponin C and S100B. These proteins typica ...	The EF-hands can be divided into two classes: signalling proteins and buffering/transport proteins. The first group is the largest and includes the most well-known members of the family such as calmodulin, troponin C and S100B. These proteins typically undergo a calcium-dependent conformational change which opens a target binding site. The latter group is represented by calbindin D9k and do not undergo calcium dependent conformational changes.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth I]	Troponin I	cytoskeletal protein binding actin binding protein binding binding	multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction heart process circulatory system process cardiac muscle contraction heart contraction multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction heart process circulatory system process cardiac muscle contraction heart contraction blood circulation	striated muscle thin filament protein-containing complex intracellular anatomical structure myofilament intracellular membraneless organelle actin cytoskeleton sarcomere intracellular organelle cellular anatomical structure troponin complex cytoskeleton organelle membraneless organelle contractile muscle fiber striated muscle thin filament protein-containing complex intracellular anatomical structure myofilament intracellular membraneless organelle actin cytoskeleton sarcomere intracellular organelle cellular anatomical structure troponin complex cytoskeleton organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex
C	Troponin C	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction	striated muscle thin filament protein-containing complex intracellular anatomical structure myofilament intracellular membraneless organelle actin cytoskeleton sarcomere intracellular organelle cellular anatomical structure troponin complex cytoskeleton organelle membraneless organelle contractile muscle fiber striated muscle thin filament protein-containing complex intracellular anatomical structure myofilament intracellular membraneless organelle actin cytoskeleton sarcomere intracellular organelle cellular anatomical structure troponin complex cytoskeleton organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex
A [auth T]	Troponin T	cytoskeletal protein binding troponin C binding protein binding binding troponin I binding tropomyosin binding	multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction regulation of biological process regulation of muscle contraction regulation of system process biological regulation multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction regulation of biological process regulation of muscle contraction regulation of system process biological regulation regulation of multicellular organismal process regulation of muscle system process	striated muscle thin filament protein-containing complex intracellular anatomical structure myofilament intracellular membraneless organelle actin cytoskeleton sarcomere intracellular organelle cellular anatomical structure troponin complex cytoskeleton organelle membraneless organelle contractile muscle fiber striated muscle thin filament protein-containing complex intracellular anatomical structure myofilament intracellular membraneless organelle actin cytoskeleton sarcomere intracellular organelle cellular anatomical structure troponin complex cytoskeleton organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth I]	IPR001978	Troponin	Family
B [auth I]	IPR050875	Troponin I	Family
B [auth I]	IPR038077	Troponin domain superfamily	Homologous Superfamily
C	IPR050230	Calmodulin/Myosin light chain/Troponin C-like	Family
C	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
C	IPR002048	EF-hand domain	Domain
C	IPR011992	EF-hand domain pair	Homologous Superfamily
A [auth T]	IPR027707	Troponin T	Family
A [auth T]	IPR001978	Troponin	Family
A [auth T]	IPR038077	Troponin domain 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 R01GM157729.