Alpha-actinin-3

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ACTN3
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 1TJT, 1WKU, 3LUE
Identifiers
Aliases	ACTN3, actinin alpha 3 (gene/pseudogene), ACTN3D, actinin alpha 3
External IDs	OMIM: 102574; MGI: 99678; GeneCards: ACTN3; OMA:ACTN3 - orthologs
Gene location (Human) Chr. Chromosome 11 (human)[1] Band 11q13.2 Start 66,546,395 bp[1] End 66,563,334 bp[1]
Gene location (Mouse) Chr. Chromosome 19 (mouse)[2] Band 19 A|19 4.12 cM Start 4,911,244 bp[2] End 4,927,937 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in Skeletal muscle tissue of rectus abdominis Skeletal muscle tissue of biceps brachii thoracic diaphragm vastus lateralis muscle muscle of thigh gastrocnemius muscle triceps brachii muscle deltoid muscle tibialis anterior muscle glutes Top expressed in triceps brachii muscle sternocleidomastoid muscle temporal muscle vastus lateralis muscle medial head of gastrocnemius muscle extensor digitorum longus muscle tibialis anterior muscle ankle muscle of thigh plantaris muscle More reference expression data BioGPS More reference expression data
Gene ontology Molecular function calcium ion binding protein homodimerization activity transmembrane transporter binding metal ion binding integrin binding protein binding actin binding structural constituent of muscle Cellular component cytosol pseudopodium focal adhesion intracellular anatomical structure actin filament extracellular exosome Biological process regulation of apoptotic process regulation of aerobic respiration negative regulation of glycolytic process negative regulation of calcineurin-NFAT signaling cascade transition between fast and slow fiber positive regulation of glucose catabolic process to lactate via pyruvate focal adhesion assembly muscle filament sliding skeletal muscle atrophy response to denervation involved in regulation of muscle adaptation negative regulation of oxidative phosphorylation positive regulation of skeletal muscle tissue growth regulation of the force of skeletal muscle contraction negative regulation of cold-induced thermogenesis Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 89 11474 Ensembl ENSG00000248746 ENSMUSG00000006457 UniProt Q08043 O88990 RefSeq (mRNA) NM_001104 NM_001258371 NM_013456 RefSeq (protein) NP_001095 NP_001245300 NP_038484 Location (UCSC) Chr 11: 66.55 – 66.56 Mb Chr 19: 4.91 – 4.93 Mb PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Alpha-actinin-3, also known as alpha-actinin skeletal muscle isoform 3 or F-actin cross-linking protein, is a protein that in humans is encoded by the ACTN3 gene (named sprinter gene, speed gene or athlete gene) located on chromosome 11. All people have two copies (alleles) of this gene.^[5][6]

Alpha-actinin is an actin-binding protein with multiple roles in different cell types. This gene expression is limited to skeletal muscle. It is localized to the Z-disc and analogous dense bodies, where it helps to anchor the myofibrillar actin filaments.^[7]