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Actin is a family of globular multi-functional proteins that form microfilaments in the cytoskeleton, and the thin filaments in muscle fibrils.It is found in essentially all eukaryotic cells, where it may be present at a concentration of over 100 μM; its mass is roughly 42 kDa, with a diameter of 4 to 7 nm.
Actin exists in two states in the axonal and dendritic processes: globular or G-actin and filament/filamentous or F-actin. G-actin are the monomer building blocks that assemble via weak noncovalent interactions to form F-actin. F-actin is a two-stranded asymmetrical helical polymer.
Actin, alpha skeletal muscle is a protein that in humans is encoded by the ACTA1 gene. [5] [6] Actin alpha 1 which is expressed in skeletal muscle is one of six different actin isoforms which have been identified. Actins are highly conserved proteins that are involved in cell motility, structure and integrity.
86 56456 Ensembl ENSG00000136518 ENSMUSG00000027671 UniProt O96019 Q9Z2N8 RefSeq (mRNA) NM_178042 NM_004301 NM_177989 NM_019673 RefSeq (protein) NP_004292 NP_817126 NP_829888 NP_062647 Location (UCSC) Chr 3: 179.56 – 179.59 Mb Chr 3: 32.76 – 32.78 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Actin-like protein 6A is a protein that in humans is encoded by the ACTL6A gene ...
Actin, cytoplasmic 2, or gamma-actin is a protein that in humans is encoded by the ACTG1 gene. [5] Gamma-actin is widely expressed in cellular cytoskeletons of many tissues; in adult striated muscle cells, gamma-actin is localized to Z-discs and costamere structures, which are responsible for force transduction and transmission in muscle cells.
Actin beta (HUGO Gene Nomenclature Committee abbreviation ACTB/ACTB) is one of six different actin isoforms which have been identified in humans. This is one of the two nonmuscle cytoskeletal actins. Actins are highly conserved proteins [5] [6] that are involved in cell motility, structure and integrity. Alpha actins are a major constituent of ...
Alpha-actinin-1 is a non-muscle cytoskeletal isoform found along microfilament bundles and adherens-type junctions, where it is involved in binding actin to the membrane. In contrast, skeletal, cardiac, and smooth muscle isoforms are localized to the Z-disc and analogous dense bodies, where they help anchor the myofibrillar actin filaments.
Actin, gamma-enteric smooth muscle is a protein that in humans is encoded by the ACTG2 gene. [5] [6] [7] Actins are highly conserved proteins that are involved in various types of cell motility, and maintenance of the cytoskeleton. In vertebrates, three main groups of actin isoforms, alpha, beta and gamma have been identified.