NDLI: Morphology and Dynamics of Clathrin/GGA1-coated Carriers Budding from the Trans-Golgi NetworkV⃞

Content Provider	PubMed Central
Author	Puertollano, Rosa Wel, Nicole N. Van Der Greene, Lois E. Eisenberg, Evan Peters, Peter J. Bonifacino, Juan S.
Editor	Pfeffer, Suzanne R.
Copyright Year	2003
Abstract	Sorting of transmembrane proteins and their ligands at various compartments of the endocytic and secretory pathways is mediated by selective incorporation into clathrin-coated intermediates. Previous morphological and biochemical studies have shown that these clathrin-coated intermediates consist of spherical vesicles with a diameter of 60–100 nm. Herein, we report the use of fluorescent imaging of live cells to demonstrate the existence of a different type of transport intermediate containing associated clathrin coats. Clathrin and the adaptors GGA1 and adaptor protein-1, labeled with different spectral variants of the green fluorescent protein, are shown to colocalize to the trans-Golgi network and to a population of vesicles and tubules budding from it. These intermediates are highly pleiomorphic and move toward the peripheral cytoplasm for distances of up to 10 μm with average speeds of ∼1 μm/s. The labeled clathrin and GGA1 cycle on and off membranes with half-times of 10–20 s, independently of vesicle budding. Our observations indicate the existence of a novel type of trans-Golgi network-derived carriers containing associated clathrin, GGA1 and adaptor protein-1 that are larger than conventional clathrin-coated vesicles, and that undergo long-range translocation in the cytoplasm before losing their coats.
Related Links	http://dx.doi.org/10.1091/mbc.02-07-0109
Ending Page	1557
Page Count	13
Starting Page	1545
File Format	PDF
ISSN	10591524
Journal	Molecular Biology of the Cell
Issue Number	4
Volume Number	14
Language	English
Publisher	The American Society for Cell Biology
Publisher Date	2003-04-01
Access Restriction	Open
Rights Holder	The American Society for Cell Biology
Subject Keyword	Cell Biology Molecular Biology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cell Biology Molecular Biology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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