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ARPC1B

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ARPC1B
Identifiers
AliasesARPC1B, ARC41, p40-ARC, p41-ARC, actin related protein 2/3 complex subunit 1B, PLTEID, IMD71
External IDsOMIM: 604223; MGI: 1343142; HomoloGene: 4179; GeneCards: ARPC1B; OMA:ARPC1B - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_005720

NM_023142

RefSeq (protein)

NP_005711

NP_075631

Location (UCSC)Chr 7: 99.37 – 99.39 MbChr 5: 145.05 – 145.07 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Actin-related protein 2/3 complex subunit 1B is a protein that in humans is encoded by the ARPC1B gene.[5][6][7]

Function

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This gene encodes one of seven subunits of the human Arp2/3 protein complex. This subunit is a member of the SOP2 family of proteins and is most similar to the protein encoded by gene ARPC1A. The similarity between these two proteins suggests that they both may function as p41 subunit of the human Arp2/3 complex that facilitates branching of actin filaments in cells. Isoforms of the p41 subunit may adapt the functions of the complex to different cell types or developmental stages.[7] Indeed, it has recently been shown that variants of the Arp2/3 complex differ in their ability to promote actin assembly, with complexes containing ARPC1B and ARPC5L being better at this than those containing ARPC1A and ARPC5.[8] The differing functions of ARPC1A and ARPC1B are also evident in the recent discovery of patients with severe or total ARPC1B deficiency, who have platelet and immune system abnormalities yet survive, possibly due to a compensatory up-regulation of ARPC1A expression.[9]

Interactions

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ARPC1B has been shown to interact with PAK1.[10]

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000130429Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000029622Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Welch MD, DePace AH, Verma S, Iwamatsu A, Mitchison TJ (July 1997). "The human Arp2/3 complex is composed of evolutionarily conserved subunits and is localized to cellular regions of dynamic actin filament assembly". The Journal of Cell Biology. 138 (2): 375–384. doi:10.1083/jcb.138.2.375. PMC 2138188. PMID 9230079.
  6. ^ Machesky LM, Reeves E, Wientjes F, Mattheyse FJ, Grogan A, Totty NF, et al. (November 1997). "Mammalian actin-related protein 2/3 complex localizes to regions of lamellipodial protrusion and is composed of evolutionarily conserved proteins". The Biochemical Journal. 328 (Pt 1): 105–112. doi:10.1042/bj3280105. PMC 1218893. PMID 9359840.
  7. ^ a b "Entrez Gene: ARPC1B actin related protein 2/3 complex, subunit 1B, 41kDa".
  8. ^ Abella JV, Galloni C, Pernier J, Barry DJ, Kjær S, Carlier MF, et al. (January 2016). "Isoform diversity in the Arp2/3 complex determines actin filament dynamics". Nature Cell Biology. 18 (1): 76–86. doi:10.1038/ncb3286. PMID 26655834. S2CID 2916212.
  9. ^ Kahr WH, Pluthero FG, Elkadri A, Warner N, Drobac M, Chen CH, et al. (April 2017). "Loss of the Arp2/3 complex component ARPC1B causes platelet abnormalities and predisposes to inflammatory disease". Nature Communications. 8: 14816. Bibcode:2017NatCo...814816K. doi:10.1038/ncomms14816. PMC 5382316. PMID 28368018.
  10. ^ Vadlamudi RK, Li F, Barnes CJ, Bagheri-Yarmand R, Kumar R (February 2004). "p41-Arc subunit of human Arp2/3 complex is a p21-activated kinase-1-interacting substrate". EMBO Reports. 5 (2): 154–160. doi:10.1038/sj.embor.7400079. PMC 1298990. PMID 14749719.

Further reading

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