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Cited by 387

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Lateral motion of fluorescently labeled acetylcholine receptors in membranes of developing muscle fibers.

Open access
Axelrod, D, Ravdin, P, Koppel, D E, Schlessinger, J, Webb, W W, Elson, E L, Podleski, T R·1976·Proceedings of the National Academy of Sciences

Abstract

We have made direct, quantitative measurements of the lateral motion and age-dependent distribution of acetylcholine receptors (AChR) on the surface of rat myotubes in primary culture. AChR were fluorescently marked with tetramethylrhodamine-labeled alpha-bungarotoxin and AChR lateral motion was measured by the fluoresence photobleaching recovery technique. We found two coexisting distinct classes of AChR: (i) mobile, uniformly distributed AChR that appear on all myotubes shortly after fusion from myoblasts; and (ii) immobile, dense, highly granular AChR in patches of 10-60 mum size that appear shortly after fusion and disappear after myotubes have become extensively interconnected. In addition, evidence of turnover of AChR labeled with tetramethylrhodamine-alpha-bungarotoxin is seen in the gradual internalization of surface fluorescence within 36 hr after labeling. The relevance of these results to an understanding of the membrane dynamics and localization of muscle AChR is discussed.

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Metadata

Authors
Axelrod, D., Ravdin, P., Koppel, D. E., Schlessinger, J., Webb, W. W., Elson, E. L., & Podleski, T. R.
Venue
Proceedings of the National Academy of Sciences
Published
1976-12
Volume
73
Issue
12
Pages
4594-4598
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1999860614
Cited by
387
References
0
FWCI
8.83
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Lateral motion of fluorescently labeled acetylcholine receptors in membranes of developing muscle fibers. https://app.cochat.ai/papers/10.1073/pnas.73.12.4594
The paper
Axelrod, D., Ravdin, P., Koppel, D. E., Schlessinger, J., Webb, W. W., Elson, E. L., & Podleski, T. R. (1976). Lateral motion of fluorescently labeled acetylcholine receptors in membranes of developing muscle fibers. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.73.12.4594

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