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ACTR1A - ARP1 actin-related protein 1 homolog A, centractin alpha (yeast)
Entrez Gene Name: ARP1 actin-related protein 1 homolog A, centractin alpha (yeast)
Synonyms: ACTIN-RPV, ACTR1A, alpha-Arp1, ARP1, CENTROSOME ASSOCIATED ACTIN, CTRN1, FLJ52695, FLJ52800, FLJ55002

Gene Summary

  • Human (10121): This gene encodes a 42.6 kD subunit of dynactin, a macromolecular complex consisting of 10-11 subunits ranging in size from 22 to 150 kD. Dynactin binds to both microtubules and cytoplasmic dynein. It is involved in a diverse array of cellular functions, including ER-to-Golgi transport, the centripetal movement of lysosomes and endosomes, spindle formation, chromosome movement, nuclear positioning, and axonogenesis. This subunit is present in 8-13 copies per dynactin molecule, and is the most abundant molecule in the dynactin complex. It is an actin-related protein, and is approximately 60% identical at the amino acid level to conventional actin. [provided by RefSeq]

Cell Regulation

Regulates:
  • lic
  • Dynein heavy chain
  • Dynein Light Chain
View all 5 in IPA
Regulated by:
  • F Actin
View all 2 in IPA
Binds:
  • SPTBN2
  • chaperonin-containing T-complex
  • HLA-B
View all 15 in IPA
Role in cell:
  • binding in
  • translocation in
  • motor function in
View all 6 in IPA
Disease:
  • insulin-dependent diabetes mellitus
View all 1 in IPA

Biological Process

vesicle-mediated transport

Cellular Components

centrosome, cytoplasm, cytoskeleton, dynactin complex

Literature References

  • 11483508Hoogenraad CC, Akhmanova A, Howell SA, Dortland BR, De Zeeuw CI, Willemsen R, Visser P, Grosveld F, Galjart N. Mammalian Golgi-associated Bicaudal-D2 functions in the dynein-dynactin pathway by interacting with these complexes.EMBO J 2001 08 1;20(15):4041-54
  • 11461920Holleran EA, Ligon LA, Tokito M, Stankewich MC, Morrow JS, Holzbaur EL. beta III spectrin binds to the Arp1 subunit of dynactin.J Biol Chem 2001 Sep 28;276(39):36598-605
  • 16254247Casenghi M, Barr FA, Nigg EA. Phosphorylation of Nlp by Plk1 negatively regulates its dynein-dynactin-dependent targeting to the centrosome.J Cell Sci 2005 Nov 01;118(Pt 21):5101-8
  • View 74 categorized literature findings and their references in IPA

Molecular Functions

ATP binding, nucleotide binding, protein binding

Pathways

No Data Available

Protein Domains

motor protein, structural constituent of cytoskeleton

Subcellular Locations

astral microtubules, centrosome, cytoplasm, kinetochores, membrane fraction, microtubule aster fraction, myelin enriched fraction, pseudopodia, spindle fibers, spindle pole

IPA Extras

View additional information available in IPA's curated and annotated database: