SnapShot: Formins

نویسندگان

  • Christian Baarlink
  • Dominique Brandt
  • Robert Grosse
چکیده

See online version for legend and references. Autosomal-dominant nonsyndromic deafness (DFNA1), myeloproliferative defects, defects in T lymphocyte traffi cking and proliferation, tumor cell invasion, defects in natural killer lymphocyte function DIAPH2 (mDia3) Cdc42 Kinetochore Stable microtubule attachment to kinetochore for chromosome alignment Premature ovarian failure DIAPH3 (mDia2) Increased chromosomal deletion of gene locus in metastatic tumors FMNL1 (FRLα) Cdc42 Cell cortex, microtubule-organizing center Phagocytosis, T cell polarity Overexpression is linked to leukemia and non-Hodgkin lymphoma FMNL2/FRL3/ FHOD2 RhoC ND Cell motility Upregulated in metastatic colorectal cancer, chromosomal deletion is associated with mental retardation FMNL3/FRL2 Constituently active Stress fi bers ND ND DAAM1 Dishevelled Cell cortex Planar cell polarity ND DAAM2 ND ND ND Overexpressed in schizophrenia patients FHOD1 ROCK Stress fi bers Cell motility FHOD3 ND Nestin, sarcomere Organizing sarcomeres in striated muscle cells Single-nucleotide polymorphisms associated with type 1 diabetes FMN1 Spire* Adherens junctions, microtubules Forming intercellular junctions Oligodactylism and partial renal agenesis FMN2 Spire* Chromosomes Asymmetric spindle positioning in meiotic oocytes, cytokinesis Female infertility, birth defects Delphilin ND Postsynapse Synaptic transmission Defects in Induction of long-term depression and optokinetic adaptation INF1/FHDC1 ND Microtubules Microtubule stabilization ND INF2 Cdc42 ER, apical zone, slit diaphragm ER structure, cell polarity, transcytosis, and lumen formation Mutated in patients with focal segmental glomerulosclerosis

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SnapShot: Actin Regulators I

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Control of the Assembly of ATP- and ADP-Actin by Formins and Profilin

Formin proteins nucleate actin filaments, remaining processively associated with the fast-growing barbed ends. Although formins possess common features, the diversity of functions and biochemical activities raised the possibility that formins differ in fundamental ways. Further, a recent study suggested that profilin and ATP hydrolysis are both required for processive elongation mediated by the...

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Formins and membranes: anchoring cortical actin to the cell wall and beyond

Formins are evolutionarily conserved eukaryotic proteins participating in actin and microtubule organization. Land plants have three formin clades, with only two - Class I and II - present in angiosperms. Class I formins are often transmembrane proteins, residing at the plasmalemma and anchoring the cortical cytoskeleton across the membrane to the cell wall, while Class II formins possess a PTE...

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Formins as effector proteins of Rho GTPases

Formin proteins were recognized as effectors of Rho GTPases some 15 years ago. They contribute to different cellular actin cytoskeleton structures by their ability to polymerize straight actin filaments at the barbed end. While not all formins necessarily interact with Rho GTPases, a subgroup of mammalian formins, termed Diaphanous-related formins or DRFs, were shown to be activated by small GT...

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Formins: Linking Cytoskeleton and Endomembranes in Plant Cells

The cytoskeleton plays a central part in spatial organization of the plant cytoplasm, including the endomebrane system. However, the mechanisms involved are so far only partially understood. Formins (FH2 proteins), a family of evolutionarily conserved proteins sharing the FH2 domain whose dimer can nucleate actin, mediate the co-ordination between actin and microtubule cytoskeletons in multiple...

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mDia1 and formins: screw cap of the actin filament

Formin homology proteins (formins) are actin nucleation factors which remain bound to the growing barbed end and processively elongate actin filament (F-actin). Recently, we have demonstrated that a mammalian formin mDia1 rotates along the long-pitch helix of F-actin during processive elongation (helical rotation) by single-molecule fluorescence polarization. We have also shown processive depol...

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عنوان ژورنال:
  • Cell

دوره 142  شماره 

صفحات  -

تاریخ انتشار 2010