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Cholera toxin can catalyze ADP-ribosylation of cytoskeletal proteins

Journal Article · · J. Cell Biol.; (United States)
DOI:https://doi.org/10.1083/jcb.91.2.410· OSTI ID:5842828
Cholera toxin catalyzes transfer of radiolabel from (/sup 32/P)NAD/sup +/ to several peptides in particulate preparations of human foreskin fibroblasts. Resolution of these peptides by two-dimensional gel electrophoresis allowed identification of two peptides of M/sub r/ = 42,000 and 52,000 as peptide subunits of a regulatory component of adenylate cyclase. The radiolabeling of another group of peptides (M/sub r/ = 50,000 to 65,000) suggested that cholera toxin could catalyze ADP-ribosylation of cytoskeletal proteins. This suggestion was confirmed by showing that incubation with cholera toxin and (/sup 32/P)NAD/sup +/ caused radiolabeling of purified microtubule and intermediate filament proteins.
Research Organization:
Univ. of California, San Francisco
OSTI ID:
5842828
Journal Information:
J. Cell Biol.; (United States), Journal Name: J. Cell Biol.; (United States) Vol. 91:2; ISSN JCLBA
Country of Publication:
United States
Language:
English