Arginyltransferase is an ATP-independent self-regulating enzyme that forms distinct functional complexes in vivo.

ABSTRACT: Posttranslational arginylation mediated by arginyl transferase (ATE1) plays an important role in cardiovascular development, cell motility, and regulation of cytoskeleton and metabolic enzymes. This protein modification was discovered decades ago, however, the arginylation reaction and the functioning of ATE1 remained poorly understood because of the lack of good biochemical models. Here, we report the development of an in vitro arginylation system, in which ATE1 function and molecular requirements can be tested using purified recombinant ATE1 isoforms supplemented with a controlled number of components. Our results show that arginylation reaction is a self-sufficient, ATP-independent process that can affect different sites in a polypeptide and that arginyl transferases form different mole

SUBMITTER: Wang J 

PROVIDER: S-EPMC3031169 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature