From: Carrier Motility
Copyright © 2000-2013, Landes Bioscience.
| Motor Protein | Subunit | New Nomenclature167 | No. | Comments |
|---|---|---|---|---|
| Cytoplasmic | Heavy chain | 2 | Power generating unit | |
| Dynein 1 | DHC1a | DYNC1H1 | ||
| Intermediate chains IC-1A, B splicing isoforms IC-2A, B, C splicing isoforms | DYNC1I1 DYNC1I2 | 2 | IC proteins are the major scaffolding molecule of dynein complex. Multiple | |
| splicing isoforms exist. Bind DHC, light chains and dynactin subunit p150. | ||||
| Light intermediate chains | 2-4 | Several splicing | ||
| LIC1 | DYNC1LI1 | isoforms of LIC2 exist. | ||
| OR LIC2 | DYNC1LI2 | Both LICs bind DHC and can bind cargo. | ||
| Each complex contains either LIC1 or LIC2, but not both. | ||||
| Light chains Tctex 1 light chain 1 OR Tctex 1 light chain 3 (rp3) | DYNLT1 DYNLT3 | 4-5 | Some may be involved in cargo binding. | |
| Roadblock 1 (Rdbl1) | DYNLRB1 | |||
| OR Roadblock 2 (Rdbl2) | DYNLRB2 | |||
| LC8 light chain 1 | DYNLL1 | |||
| ORLC8 light chain 2 | DYNLL2 | |||
| Dynactin | p150Glued | 2 | Dimerisation mediated through coiled coils. The subunit binds dynein intermediate chain, p50, p25, p24 and Arp1 filament. | |
| p62 | 1 | Binds the -end of Arp1 filament, p25, p27, Arp1 and Arp11. Not necessary for dynactin stability. | ||
| Dynamitin (p50) | 4 | The subunits associate with each other p24 and p150. | ||
| Arp11 | 1 | Binds -end of Arp1 filament. | ||
| Arp1 | 8 | Can form short filaments and connects the dynactin complex with cargo. | ||
| β-actin | ? | Copurifies with dynactin complex. | ||
| CapZ α/β | 1 | Binds +end of Arp1 filament. | ||
| p24/p22 | 2 | Binds p150 and p50. | ||
| p27 | 1? | Loosely associated with dynactin complex. Also exists soluble in cytoplasm. | ||
| p25 | 1? |
From: Carrier Motility
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