Dock10

From Wikipedia, the free encyclopedia
Jump to: navigation, search
DOCK10
Identifiers
Aliases DOCK10, DRIP2, Nbla10300, ZIZ3, Dock10, dedicator of cytokinesis 10
External IDs MGI: 2146320 HomoloGene: 45952 GeneCards: DOCK10
RNA expression pattern
PBB GE DOCK10 gnf1h04025 at fs.png

PBB GE DOCK10 219279 at fs.png

PBB GE DOCK10 gnf1h06310 s at fs.png
More reference expression data
Orthologs
Species Human Mouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001290263
NM_014689
NM_017718

NM_001285927
NM_175291

RefSeq (protein)

NP_001277192
NP_055504

NP_001272856.1
NP_780500.2
NP_001272856
NP_780500

Location (UCSC) Chr 2: 224.77 – 225.04 Mb Chr 1: 80.5 – 80.76 Mb
PubMed search [1] [2]
Wikidata
View/Edit Human View/Edit Mouse

Dock10 (Dedicator of cytokinesis), also known as Zizimin3, is a large (~240 kDa) protein involved in intracellular signalling networks.[3] It is a member of the DOCK-D subfamily of the DOCK family of guanine nucleotide exchange factors, which function as activators of small G proteins.

Discovery[edit]

Dock10 was identified via bioinformatic approaches as one of a family of evolutionarily conserved proteins (the DOCK family) that share significant sequence homology.[4] Dock10 is expressed in peripheral blood leukocytes[5] as well as in the brain, spleen, lung and thymus.[6]

Structure and Function[edit]

Dock10 shares the same domain arrangement as other members of the DOCK-D/Zizimin subfamily as well as a high level of sequence similarity.[6] It contains a DHR2 domain that is involved in G protein binding and a DHR1 domain, which, in some DOCK family proteins, interacts with membrane phospholipids. Like other DOCK-D subfamily proteins Dock10 contains an N-terminal PH domain, which, in Dock9/Zizimin1, mediates recruitment to the plasma membrane.[7] The DHR2 domain of Dock10 appears to bind to the small G proteins Cdc42, TC10 and TCL although these interactions are of low affinity.[6] The physiological role of Dock10 is poorly characterised, however a study in lymphocytes has shown that Dock10 expression is upregulated in B-lymphocytes and Chronic Lymphocytic Leukemia (CLL) cells in response to the cytokine IL-4.[5] This suggests that Dock10 may have a role in B-cell activation and proliferation. Another study identified Dock10 as a protein that was overexpressed in some aggressive papillary thyroid carcinomas.[8]


References[edit]

  1. ^ "Human PubMed Reference:". 
  2. ^ "Mouse PubMed Reference:". 
  3. ^ "Entrez Gene: DOCK10 dedicator of cytokinesis 10". 
  4. ^ Côté JF, Vuori K (December 2002). "Identification of an evolutionarily conserved superfamily of DOCK180-related proteins with guanine nucleotide exchange activity". J. Cell Sci. 115 (Pt 24): 4901–13. doi:10.1242/jcs.00219. PMID 12432077. 
  5. ^ a b Yelo E, Bernardo MV, Gimeno L, et al. (July 2008). "Dock10, a novel CZH protein selectively induced by interleukin-4 in human B lymphocytes". Mol. Immunol. 45 (12): 3411–18. doi:10.1016/j.molimm.2008.04.003. PMID 18499258. 
  6. ^ a b c Nishikimi A, Meller N, Uekawa N, et al. (February 2005). "Zizimin2: a novel, DOCK180-related Cdc42 guanine nucleotide exchange factor expressed predominantly in lymphocytes". FEBS Letters. 579 (5): 1039–46. doi:10.1016/j.febslet.2005.01.006. PMID 15710388. 
  7. ^ Meller N, Westbrook MJ, Shannon JD, et al. (January 2008). "Function of the N-terminus of zizimin1: autoinhibition and membrane targeting". Biochem. J. 409 (2): 525–33. doi:10.1042/BJ20071263. PMC 2740492Freely accessible. PMID 17935486. 
  8. ^ Fluge Ø, Bruland O, Akslen LA, et al. (February 2006). "Gene expression in poorly differentiated papillary thyroid carcinomas". Thyroid. 16 (2): 161–75. doi:10.1089/thy.2006.16.161. PMID 16676402. 

Further reading[edit]