7KOR | pdb_00007kor

Structure of cardiac native thin filament at pCa=5.8 having upper troponin in Ca2+ bound state and lower troponin in Ca2+ free state

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
X	SCOP2B Superfamily	Tropomyosin	8039510	3001691	SCOP2B (2022-06-29)
W	SCOP2B Superfamily	Tropomyosin	8039510	3001691	SCOP2B (2022-06-29)
Q	SCOP2B Superfamily	Tropomyosin	8039510	3001691	SCOP2B (2022-06-29)
P	SCOP2B Superfamily	Tropomyosin	8039510	3001691	SCOP2B (2022-06-29)
V	SCOP2B Superfamily	EF-hand	8104309	3001983	SCOP2B (2022-06-29)
CA [auth c]	SCOP2B Superfamily	EF-hand	8104309	3001983	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)
O	Actin_1st	e7korO1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
O	Actin_2nd	e7korO2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
N	Actin_1st	e7korN2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
N	Actin_2nd	e7korN1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
M	Actin_1st	e7korM2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
M	Actin_2nd	e7korM1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
L	Actin_1st	e7korL1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
L	Actin_2nd	e7korL2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
K	Actin_1st	e7korK2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
K	Actin_2nd	e7korK1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
J	Actin_1st	e7korJ2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
J	Actin_2nd	e7korJ1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
I	Actin_1st	e7korI1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
I	Actin_2nd	e7korI2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
H	Actin_1st	e7korH2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
H	Actin_2nd	e7korH1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
G	Actin_1st	e7korG1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
G	Actin_2nd	e7korG2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
F	Actin_1st	e7korF2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
F	Actin_2nd	e7korF1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
E	Actin_1st	e7korE2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
E	Actin_2nd	e7korE1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
D	Actin_1st	e7korD2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
D	Actin_2nd	e7korD1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
C	Actin_1st	e7korC2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
C	Actin_2nd	e7korC1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
B	Actin_1st	e7korB1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
B	Actin_2nd	e7korB2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
A	Actin_1st	e7korA2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
A	Actin_2nd	e7korA1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
Z	F_UNCLASSIFIED	e7korZ1	A: alpha duplicates or obligate multimers	X: EB1 dimerisation domain-like (From Topology)	H: EB1 dimerisation domain-like (From Topology)	T: EB1 dimerisation domain-like	F: F_UNCLASSIFIED	ECOD (1.6)
Y	F_UNCLASSIFIED	e7korY1	A: alpha duplicates or obligate multimers	X: EB1 dimerisation domain-like (From Topology)	H: EB1 dimerisation domain-like (From Topology)	T: EB1 dimerisation domain-like	F: F_UNCLASSIFIED	ECOD (1.6)
X	Tropomyosin	e7korX1	A: alpha bundles	X: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	H: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	T: Helical domain in structural maintenance of chromosomes protein 3	F: Tropomyosin	ECOD (1.6)
W	Tropomyosin	e7korW1	A: alpha bundles	X: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	H: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	T: Helical domain in structural maintenance of chromosomes protein 3	F: Tropomyosin	ECOD (1.6)
S	F_UNCLASSIFIED	e7korS1	A: alpha duplicates or obligate multimers	X: EB1 dimerisation domain-like (From Topology)	H: EB1 dimerisation domain-like (From Topology)	T: EB1 dimerisation domain-like	F: F_UNCLASSIFIED	ECOD (1.6)
R	F_UNCLASSIFIED	e7korR1	A: alpha duplicates or obligate multimers	X: EB1 dimerisation domain-like (From Topology)	H: EB1 dimerisation domain-like (From Topology)	T: EB1 dimerisation domain-like	F: F_UNCLASSIFIED	ECOD (1.6)
Q	Tropomyosin	e7korQ1	A: alpha bundles	X: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	H: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	T: Helical domain in structural maintenance of chromosomes protein 3	F: Tropomyosin	ECOD (1.6)
P	Tropomyosin	e7korP1	A: alpha bundles	X: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	H: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	T: Helical domain in structural maintenance of chromosomes protein 3	F: Tropomyosin	ECOD (1.6)
V	EF-hand_7_1	e7korV1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_1	ECOD (1.6)
V	EF-hand_7_5	e7korV2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_5	ECOD (1.6)
CA [auth c]	EF-hand_7_1	e7korc1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_1	ECOD (1.6)
CA [auth c]	EF-hand_7_5	e7korc2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_5	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	PF13833	EF-hand domain pair (EF-hand_8)	EF-hand domain pair		Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	PF00022	Actin (Actin)	Actin	-	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	PF13499	EF-hand domain pair (EF-hand_7)	EF-hand domain pair		Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	PF00992	Troponin (Troponin)	Troponin	-	Family
P, Q, R, S, W P, Q, R, S, W, X, Y, Z	PF00261	Tropomyosin (Tropomyosin)	Tropomyosin	-	Coiled-coil
AA [auth a], T	PF00992	Troponin (Troponin)	Troponin	-	Family
CA [auth c], V	PF13833	EF-hand domain pair (EF-hand_8)	EF-hand domain pair		Domain
CA [auth c], V	PF13499	EF-hand domain pair (EF-hand_7)	EF-hand domain pair		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	Actin, alpha skeletal muscle	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding hydrolase activity catalytic activity	developmental process mesenchyme migration multicellular organismal process mesenchyme morphogenesis animal organ development mesenchyme development tissue development tissue morphogenesis anatomical structure morphogenesis tissue migration anatomical structure development animal organ morphogenesis myotube cell development skeletal muscle fiber development developmental process mesenchyme migration multicellular organismal process mesenchyme morphogenesis animal organ development mesenchyme development tissue development tissue morphogenesis anatomical structure morphogenesis tissue migration anatomical structure development animal organ morphogenesis myotube cell development skeletal muscle fiber development cellular developmental process skeletal muscle tissue development cell development muscle cell differentiation myotube differentiation striated muscle tissue development muscle structure development skeletal muscle organ development striated muscle cell development muscle cell development cell differentiation cellular process muscle tissue development muscle organ development striated muscle cell differentiation regulation of biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process cellular component assembly involved in morphogenesis skeletal myofibril assembly membraneless organelle assembly cellular component organization cellular component biogenesis cellular anatomical entity morphogenesis cellular component assembly actin filament-based process cellular component organization or biogenesis skeletal muscle thin filament assembly actin cytoskeleton organization actomyosin structure organization organelle assembly actin filament organization organelle organization myofibril assembly anatomical structure formation involved in morphogenesis supramolecular fiber organization cytoskeleton organization	cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure actin filament bundle intracellular membraneless organelle actin cytoskeleton actomyosin intracellular organelle cytoskeleton organelle membraneless organelle cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure actin filament bundle intracellular membraneless organelle actin cytoskeleton actomyosin intracellular organelle cytoskeleton organelle membraneless organelle stress fiber contractile actin filament bundle polymeric cytoskeletal fiber actin filament supramolecular fiber supramolecular polymer supramolecular complex cell body striated muscle thin filament myofilament sarcomere contractile muscle fiber cytoplasm myofibril actin-based cell projection filopodium
P, Q, R, S, W P, Q, R, S, W, X, Y, Z	Tropomyosin alpha-1 chain	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 cytoplasm
AA [auth a], T	Troponin T, cardiac muscle	-	multicellular organismal process system process regulation of biological process regulation of muscle contraction regulation of system process biological regulation regulation of multicellular organismal process muscle contraction regulation of muscle system process 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
BA [auth b], U	Troponin I, cardiac muscle	-	-	-
CA [auth c], V	Troponin C	cytoskeletal protein binding protein binding binding troponin T binding cation binding ion binding calcium ion binding metal ion binding small molecule binding actin binding protein-containing complex binding actin filament binding identical protein binding protein homodimerization activity cytoskeletal protein binding protein binding binding troponin T binding cation binding ion binding calcium ion binding metal ion binding small molecule binding actin binding protein-containing complex binding actin filament binding identical protein binding protein homodimerization activity protein dimerization activity calcium-dependent protein binding troponin I binding	regulation of muscle adaptation multicellular organismal process striated muscle adaptation system process regulation of biological process response to stimulus transition between fast and slow fiber regulation of skeletal muscle adaptation regulation of system process biological regulation muscle system process regulation of muscle system process muscle adaptation regulation of response to stimulus skeletal muscle adaptation regulation of muscle adaptation multicellular organismal process striated muscle adaptation system process regulation of biological process response to stimulus transition between fast and slow fiber regulation of skeletal muscle adaptation regulation of system process biological regulation muscle system process regulation of muscle system process muscle adaptation regulation of response to stimulus skeletal muscle adaptation regulation of multicellular organismal process heart process circulatory system process cardiac muscle contraction heart contraction muscle contraction blood circulation striated muscle contraction multicellular organismal movement musculoskeletal movement nervous system process neuromuscular process skeletal muscle contraction ventricular cardiac muscle tissue morphogenesis heart morphogenesis striated muscle tissue development muscle structure development multicellular organism development ventricular cardiac muscle tissue development anatomical structure development cardiac chamber development animal organ morphogenesis muscle tissue development muscle organ development system development developmental process heart development cardiac chamber morphogenesis cardiac muscle tissue development animal organ development tissue development muscle tissue morphogenesis circulatory system development anatomical structure morphogenesis tissue morphogenesis cardiac ventricle morphogenesis cardiac muscle tissue morphogenesis cardiac ventricle development muscle organ morphogenesis regulation of localization cellular localization regulation of cellular process regulation of actin filament-based process transport muscle filament sliding localization establishment of localization in cell actin filament-based process regulation of biological quality regulation of intracellular transport actin-myosin filament sliding regulation of transport regulation of muscle filament sliding speed intracellular transport actin filament-based movement establishment of localization regulation of muscle contraction regulation of cellular localization regulation of actin filament-based movement cellular process regulation of muscle filament sliding actin-mediated cell 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 cardiac Troponin complex cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	IPR020902	Actin/actin-like conserved site	Conserved Site
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	IPR004001	Actin, conserved site	Conserved Site
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O	IPR004000	Actin family	Family
P, Q, R, S, W P, Q, R, S, W, X, Y, Z	IPR000533	Tropomyosin	Family
AA [auth a], T	IPR027707	Troponin T	Family
AA [auth a], T	IPR001978	Troponin	Family
AA [auth a], T	IPR038077	Troponin domain superfamily	Homologous Superfamily
CA [auth c], V	IPR050230	Calmodulin/Myosin light chain/Troponin C-like	Family
CA [auth c], V	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
CA [auth c], V	IPR002048	EF-hand domain	Domain
CA [auth c], V	IPR011992	EF-hand domain pair	Homologous Superfamily