Document Detail

An antiparallel actin dimer is associated with the endocytic pathway in mammalian cells.
MedLine Citation:
PMID:  21970948     Owner:  NLM     Status:  Publisher    
The dynamic rearrangement of the actin cytoskeleton plays a key role in several cellular processes such as cell motility, endocytosis, RNA processing and chromatin organization. However, the supramolecular actin structures involved in the different processes remain largely unknown. One of the less studied forms of actin is the lower dimer (LD). This unconventional arrangement of two actin molecules in an antiparallel orientation can be detected by chemical crosslinking at the onset of polymerization in vitro. Moreover, evidence for a transient incorporation of LD into growing filaments and its ability to inhibit nucleation of F-actin filament assembly implicate that the LD pathway contributes to supramolecular actin patterning. However, a clear link from this actin species to a specific cellular function has not yet been established. We have developed an antibody that selectively binds to LD configurations in supramolecular actin structures assembled in vitro. This antibody allowed us to unveil the LD in different mammalian cells. In particular, we show an association of the antiparallel actin arrangement with the endocytic compartment at the cellular and ultrastructural level. Taken together, our results strongly support a functional role of LD in the patterning of supramolecular actin assemblies in mammalian cells.
Unai Silvan; Céline Boiteux; Rosmarie Sütterlin; Ulrich Schroeder; Hans Georg Mannherz; Brigitte M Jockusch; Simon Bernèche; Ueli Aebi; Cora-Ann Schoenenberger
Related Documents :
21594158 - Volatile compounds released by disturbed and undisturbed adults of anchomenus dorsalis ...
21824128 - Benign mucinous metaplasia of the genital mucosa - histomorphological and immunohistoch...
22272358 - Distribution of gabaergic interneurons and dopaminergic cells in the functional territo...
21684958 - The features of cotyledon areoles in leguminosae and their systematic utility.
9082958 - Transient expression of gap-43 within the hippocampus after global brain ischemia in rat.
7819418 - Quantitation of satellite cell proliferation in vivo using image analysis.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-25
Journal Detail:
Title:  Journal of structural biology     Volume:  -     ISSN:  1095-8657     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-10-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9011206     Medline TA:  J Struct Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Inc.
M.E. Müller Institute for Structural Biology, Biozentrum, University of Basel, CH-4056 Basel, Switzerland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  A quantitative collagen fibers orientation assessment using birefringence measurements: calibration ...
Next Document:  Two adjacent mutations on chromosome 16 discovered in a patient presenting with generalized convulsi...