ISSN:
0886-1544
Keywords:
clathrin
;
cell-substrate adhesion
;
freeze fracture
;
quick-freeze
;
deep-etch
;
rotary- replication
;
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Medicine
Notes:
We have used antibodies to clathrin light chains in immunocytochemical studies of acetylcholine receptor (AChR) clusters of cultured rat myotubes. Immunofluorescence and ultrastructural experiments show that clathrin is present in coated pits and in large plaques of coated membrane. Coated membrane plaques are spatially and structurally distinct from AChR-rich membrane domains and the bundles of microfilaments that are also present in AChR clusters. Clusters contain a relatively constant amount of clathrin light chain protein, which is not dependent on the amount of AChR. Clathrin plaques remain after AChR domains are disrupted by azide, or after microfilament bundles are destabilized by cytochalasin D. Extraction of myotubes with saponin removes clathrin without disrupting AChR domains. Thus, clathrin plaques, microfilament bundles, and AChR-rich domains are independently stabilized.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cm.970150208
