6C0A

Actinin-1 EF-Hand bound to the Cav1.2 IQ Motif

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	EF-hand modules in multidomain proteins	8080338	4000949	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	EF-hand	8080339	3001983	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)
A	PF08726	e6c0aA1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: PF08726	ECOD (1.6)
B	F_UNCLASSIFIED	e6c0aB1	A: extended segments	X: Voltage gated calcium channel IQ domain (From Topology)	H: Voltage gated calcium channel IQ domain (From Topology)	T: Voltage gated calcium channel IQ domain	F: F_UNCLASSIFIED	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF08726	Ca2+ insensitive EF hand (EFhand_Ca_insen)	Ca2+ insensitive EF hand	EF hands are helix-loop-helix binding motifs involved in the regulation of many cellular processes. EF hands usually bind to Ca2+ ions which causes a major conformational change that allows the protein to interact with its designated targets. This ...	EF hands are helix-loop-helix binding motifs involved in the regulation of many cellular processes. EF hands usually bind to Ca2+ ions which causes a major conformational change that allows the protein to interact with its designated targets. This domain corresponds to an EF hand which has partially or entirely lost its calcium-binding properties. The calcium insensitive EF hand is still able to mediate protein-protein recognition [1].	Domain
B	PF08763	Voltage gated calcium channel IQ domain (Ca_chan_IQ)	Voltage gated calcium channel IQ domain	Voltage gated calcium channels control cellular calcium entry in response to changes in membrane potential. The isoleucine-glutamine (IQ) motif in the voltage gated calcium channel IQ domain interacts with hydrophobic pockets of Ca2+/calmodulin [1]. ...	Voltage gated calcium channels control cellular calcium entry in response to changes in membrane potential. The isoleucine-glutamine (IQ) motif in the voltage gated calcium channel IQ domain interacts with hydrophobic pockets of Ca2+/calmodulin [1]. The interaction regulates two self-regulatory calcium dependent feedback mechanism, calcium dependent inactivation (CDI), and calcium-dependent facilitation (CDF).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Alpha-actinin-1	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding RNA binding double-stranded RNA binding organic cyclic compound binding nucleic acid binding transcription coactivator activity transcription regulator activity transcription coregulator activity nuclear receptor coactivator activity cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding RNA binding double-stranded RNA binding organic cyclic compound binding nucleic acid binding transcription coactivator activity transcription regulator activity transcription coregulator activity nuclear receptor coactivator activity protein-macromolecule adaptor activity molecular adaptor activity structural constituent of postsynapse structural molecule activity structural constituent of synapse cation binding ion binding calcium ion binding metal ion binding small molecule binding protein domain specific binding vinculin binding cytoskeletal regulatory protein binding transmembrane transporter binding cell adhesion molecule binding integrin binding signaling receptor binding identical protein binding protein homodimerization activity protein dimerization activity	cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular process cellular component organization or biogenesis cytoskeleton organization developmental process anatomical structure morphogenesis platelet morphogenesis anatomical structure development cell morphogenesis actin filament network formation actin filament organization cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular process cellular component organization or biogenesis cytoskeleton organization developmental process anatomical structure morphogenesis platelet morphogenesis anatomical structure development cell morphogenesis actin filament network formation actin filament organization supramolecular fiber organization focal adhesion assembly cell-substrate junction assembly cell-substrate adhesion cellular component biogenesis cell adhesion cell junction organization cellular component assembly cell-matrix adhesion cell junction assembly cell-substrate junction organization muscle structure development muscle cell development cellular developmental process cell differentiation cell development muscle cell differentiation cortical cytoskeleton organization hemopoiesis myeloid cell differentiation platelet formation anatomical structure formation involved in morphogenesis actin filament bundle organization actin filament bundle assembly	membrane-bounded organelle intracellular anatomical structure dense core granule membrane intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle membrane-bounded organelle intracellular anatomical structure dense core granule membrane intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle secretory granule dense core granule membrane secretory vesicle cytoplasm vesicle organelle membrane secretory granule membrane Z disc sarcomere I band intracellular non-membrane-bounded organelle contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex non-membrane-bounded organelle cell-cell junction anchoring junction cell junction cluster of actin-based cell projections brush border synapse glutamatergic synapse intercalated disc fascia adherens cell-cell contact zone cytoskeleton neuron spine neuron projection dendritic spine plasma membrane bounded cell projection somatodendritic compartment cell projection postsynapse dendrite dendritic tree ruffle cell leading edge actin filament bundle actin cytoskeleton actomyosin stress fiber contractile actin filament bundle polymeric cytoskeletal fiber actin filament cell cortex cortical cytoskeleton cell periphery focal adhesion cell-substrate junction plasma membrane cortical actin cytoskeleton
B	Voltage-dependent L-type calcium channel subunit alpha-1C	calcium channel activity monoatomic cation transmembrane transporter activity voltage-gated calcium channel activity gated channel activity monoatomic ion channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity passive transmembrane transporter activity calcium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity calcium channel activity monoatomic cation transmembrane transporter activity voltage-gated calcium channel activity gated channel activity monoatomic ion channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity passive transmembrane transporter activity calcium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity high voltage-gated calcium channel activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity cytoskeletal protein binding protein binding binding alpha-actinin binding actinin binding voltage-gated calcium channel activity involved in cardiac muscle cell action potential calmodulin binding voltage-gated calcium channel activity involved in AV node cell action potential cation binding ion binding metal ion binding small molecule binding	membrane depolarization during action potential membrane depolarization biological regulation membrane depolarization during cardiac muscle cell action potential action potential regulation of biological quality cardiac muscle cell action potential regulation of membrane potential heart process multicellular organismal process system process cardiac muscle cell action potential involved in contraction signaling atrial cardiac muscle cell to AV node cell signaling membrane depolarization during action potential membrane depolarization biological regulation membrane depolarization during cardiac muscle cell action potential action potential regulation of biological quality cardiac muscle cell action potential regulation of membrane potential heart process multicellular organismal process system process cardiac muscle cell action potential involved in contraction signaling atrial cardiac muscle cell to AV node cell signaling regulation of heart contraction regulation of system process cell-cell signaling involved in cardiac conduction cardiac muscle contraction striated muscle contraction cell communication circulatory system process actin filament-based process regulation of multicellular organismal process atrial cardiac muscle cell to AV node cell communication cell communication involved in cardiac conduction blood circulation cardiac muscle cell contraction regulation of biological process atrial cardiac muscle cell action potential cell-cell signaling actin filament-based movement muscle contraction muscle system process regulation of blood circulation membrane depolarization during atrial cardiac muscle cell action potential cardiac conduction cellular process actin-mediated cell contraction heart contraction positive regulation of cytosolic calcium ion concentration developmental process heart development multicellular organism development anatomical structure development animal organ development circulatory system development system development calcium ion transmembrane import into cytosol transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization calcium ion transport metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport monoatomic cation transport calcium ion transport into cytosol calcium ion transmembrane transport immune system development immune system process cell communication by electrical coupling involved in cardiac conduction cell communication by electrical coupling limb development appendage development embryonic forelimb morphogenesis embryonic limb morphogenesis embryonic morphogenesis embryonic appendage morphogenesis embryo development anatomical structure morphogenesis forelimb morphogenesis appendage morphogenesis limb morphogenesis AV node cell action potential membrane depolarization during AV node cell action potential AV node cell to bundle of His cell signaling AV node cell to bundle of His cell communication calcium ion transmembrane transport via high voltage-gated calcium channel sensory organ development eye development visual system development camera-type eye development sensory system development regulation of actin filament-based process regulation of cellular process regulation of ventricular cardiac muscle cell action potential regulation of cardiac muscle cell action potential regulation of action potential ventricular cardiac muscle cell action potential regulation of cardiac muscle contraction regulation of muscle system process regulation of striated muscle contraction regulation of actin filament-based movement regulation of muscle contraction regulation of cardiac muscle cell contraction positive regulation of adenylate cyclase activity positive regulation of cyclase activity regulation of catalytic activity positive regulation of catalytic activity positive regulation of molecular function regulation of molecular function regulation of lyase activity regulation of adenylate cyclase activity regulation of cyclase activity positive regulation of lyase activity import into cell import across plasma membrane inorganic cation import across plasma membrane calcium ion import across plasma membrane inorganic ion import across plasma membrane calcium ion import calcium ion import into cytosol cellular response to stimulus regulation of calcium ion transport regulation of localization intracellular calcium ion homeostasis response to stimulus negative regulation of biological process sarcoplasmic reticulum calcium ion transport release of sequestered calcium ion into cytosol by sarcoplasmic reticulum intracellular signal transduction intracellular signaling cassette signal transduction monoatomic cation homeostasis intracellular monoatomic ion homeostasis release of sequestered calcium ion into cytosol by endoplasmic reticulum regulation of release of sequestered calcium ion into cytosol regulation of monoatomic ion transport maintenance of location release of sequestered calcium ion into cytosol regulation of transmembrane transport chemical homeostasis calcium-mediated signaling cellular localization inorganic ion homeostasis homeostatic process calcium ion homeostasis regulation of monoatomic ion transmembrane transport negative regulation of sequestering of calcium ion regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion maintenance of location in cell regulation of calcium ion transmembrane transport intracellular monoatomic cation homeostasis monoatomic ion homeostasis negative regulation of cellular process intracellular chemical homeostasis regulation of metal ion transport regulation of sequestering of calcium ion regulation of cardiac muscle contraction by calcium ion signaling regulation of transport sequestering of calcium ion cellular homeostasis regulation of monoatomic cation transmembrane transport regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum regulation of heart rate by cardiac conduction regulation of heart rate	protein-containing complex plasma membrane protein complex sarcolemma voltage-gated calcium channel complex plasma membrane membrane membrane protein complex cation channel complex cellular anatomical entity transporter complex cell periphery transmembrane transporter complex T-tubule L-type voltage-gated calcium channel complex protein-containing complex plasma membrane protein complex sarcolemma voltage-gated calcium channel complex plasma membrane membrane membrane protein complex cation channel complex cellular anatomical entity transporter complex cell periphery transmembrane transporter complex T-tubule L-type voltage-gated calcium channel complex calcium channel complex monoatomic ion channel complex postsynaptic specialization membrane postsynaptic specialization synapse postsynaptic density membrane synaptic membrane postsynaptic density postsynapse neuron to neuron synapse organelle cell junction postsynaptic membrane asymmetric synapse plasma membrane region somatodendritic compartment cell body perikaryon neuronal cell body intracellular anatomical structure Z disc sarcomere intracellular organelle I band intracellular non-membrane-bounded organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex non-membrane-bounded organelle cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002048	EF-hand domain	Domain
A	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A	IPR001589	Actinin-type actin-binding domain, conserved site	Conserved Site
A	IPR036872	CH domain superfamily	Homologous Superfamily
A	IPR002017	Spectrin repeat	Repeat
A	IPR001715	Calponin homology domain	Domain
A	IPR014837	EF-hand, Ca insensitive	Domain
A	IPR011992	EF-hand domain pair	Homologous Superfamily
A	IPR018159	Spectrin/alpha-actinin	Repeat
B	IPR014873	Voltage-dependent calcium channel, alpha-1 subunit, IQ domain	Domain
B	IPR002077	Voltage-dependent calcium channel, alpha-1 subunit	Family
B	IPR031649	Voltage-dependent L-type calcium channel, IQ-associated domain	Domain
B	IPR005451	Voltage-dependent calcium channel, L-type, alpha-1C subunit	Family
B	IPR005821	Ion transport domain	Domain
B	IPR005446	Voltage-dependent calcium channel, L-type, alpha-1 subunit	Family
B	IPR031688	Voltage-gated calcium channel subunit alpha, C-terminal	Domain
B	IPR027359	Voltage-dependent channel domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: Q13936	Timothy syndrome Brugada syndrome Brugada syndrome 3 hypertensive disorder long QT syndrome bipolar disorder primary immunodeficiency disease Limb Deformities, Congenital hypoglycemia schizophrenia depressive disorder heart disease intellectual disability major depressive disorder acute coronary syndrome Timothy syndrome Brugada syndrome Brugada syndrome 3 hypertensive disorder long QT syndrome bipolar disorder primary immunodeficiency disease Limb Deformities, Congenital hypoglycemia schizophrenia depressive disorder heart disease intellectual disability major depressive disorder acute coronary syndrome anorexia nervosa atrial fibrillation autism spectrum disorder bipolar I disorder short QT syndrome endogenous depression attention deficit hyperactivity disorder, inattentive type cardiomyopathy ventricular fibrillation, paroxysmal familial, type 1 autism Prinzmetal angina

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.