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Dynactin subunit 2 (DCTN2)
- Target
- DCTN2
- Molecular classification
- Other, Cytoskeletal protein complex subunit, Adapter protein
01
Overview
Dynactin subunit 2 (DCTN2) is a 50-kDa component of the dynactin complex, which is essential for dynein-mediated, minus-end-directed transport along microtubules[1][2][3][5]. DCTN2 (also known as p50 dynamitin) serves as a core adapter, recruiting and anchoring dynein to diverse intracellular cargoes such as vesicles, organelles, and chromosomes. This action is crucial for processes including ER-to-Golgi transport, spindle formation, chromosome alignment, nuclear positioning, and neuronal development. Disruption of DCTN2, by overexpression or mutation, uncouples dynein from its cargo, leading to defects in intracellular trafficking, organelle localization, and cell division. Mutations in DCTN2 are associated with some neurodegenerative conditions, but there is no evidence that DCTN2 is a direct therapeutic target or interacts with drugs[1][2][3][4][5][6].
- Other names
- DCTN50Dynamitinp50 dynactin subunitp50 dynamitinRBP50HEL-S-77Epididymis secretory protein Li 77Epididymis secretory sperm binding protein
02
Biological functions
Intracellular transport (cargo adaptor between cytoplasmic dynein and cargo)Microtubule organizationER-to-Golgi transportChromosome movement and spindle assembly during mitosisOrganelle positioning (mitochondria, Golgi, lysosomes, endosomes)Nuclear positioningCell migrationAxonogenesis and possible synapse formation
03
Disease associations
Neurodegenerative disease (e.g., "Distal hereditary motor neuronopathy, autosomal dominant 14")Spastic paraplegia 41, autosomal dominantOther (disrupted organelle trafficking and cellular dysfunction due to impairments)
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