Dynactin subunit 1 - Q14203 (DCTN1_HUMAN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

Plays a key role in dynein-mediated retrograde transport of vesicles and organelles along microtubules by recruiting and tethering dynein to microtubules. Binds to both dynein and microtubules providing a link between specific cargos, microtubules and dynein. Essential for targeting dynein to microtubule plus ends, recruiting dynein to membranous cargos and enhancing dynein processivity (the ability to move along a microtubule for a long distance without falling off the track). Can also act as a brake to slow the dynein motor during motility along the microtubule (PubMed:25185702). Can regulate microtubule stability by promoting microtubule formation, nucleation and polymerization and by inhibiting microtubule catastrophe in neurons. Inhibits microtubule catastrophe by binding both to microtubules and to tubulin, leading to enhanced microtubule stability along the axon (PubMed:23874158). Plays a role in metaphase spindle orientation (PubMed:22327364). Plays a role in centriole cohesion and subdistal appendage organization and function. Its recruitment to the centriole in a KIF3A-dependent manner is essential for the maintenance of centriole cohesion and the formation of subdistal appendage. Also required for microtubule anchoring at the mother centriole (PubMed:23386061). Plays a role in primary cilia formation (PubMed:25774020). UniProt
Pathway Maps
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Subunit Structure
Monomer and homodimer (PubMed:23874158). Dynactin is a large macromolecular complex of at least 10 components; p150(glued) binds directly to microtubules and to cytoplasmic dynein. Interacts with the C-terminus of MAPRE1, MAPRE2 and MAPRE3. Interacts (via C-terminus) with SNX6. Interacts with CLN3, DYNAP, ECPAS and FBXL5. Interacts with MISP; this interaction regulates its distribution at the cell cortex. Interacts with CEP131. Interacts with CEP126 (PubMed:24867236). Interacts with CLIP1 (PubMed:17828275, PubMed:17828277, PubMed:26972003, PubMed:20679239). Interacts with dynein intermediate chain and dynein heavy chain (PubMed:25185702). Interacts with PLK1 (via POLO-box domain) (PubMed:20679239). Interacts with TBCB (PubMed:22777741). Binds preferentially to tyrosinated microtubules than to detyrosinated microtubules (PubMed:26972003, PubMed:26968983). Interacts with PARD6A (PubMed:20719959). Interacts with HPS6 (PubMed:25189619). Interacts with KIF3A. Interacts with BICD2 (By similarity). Interacts with DST (isoform 9) (By similarity). Interacts with DST (isoform 1) (By similarity). Identified in a complex with MREG and RILP (By similarity). Interacts with BCCIP (isoform 2/alpha) (PubMed:28394342). Interacts with DCDC1 (PubMed:22159412). Interacts with AKNA (By similarity). Interacts with DYNC1I2 (By similarity). UniProt
The CAP-Gly domain is essential for interactions with microtubules and its binding partners and for its motion along the microtubules. Essential for its preferential binding to tyrosinated microtubules and for promoting the sustained interaction of the dynein motor with microtubules. UniProt
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