Three subunits contribute amino acids to the active site of tetrameric adenylosuccinate lyase: Lys268 and Glu275 are required.


Tetrameric adenylosuccinate lyase (ASL) of Bacillus subtilis catalyzes the cleavage of adenylosuccinate to form AMP and fumarate. We previously reported that two distinct subunits contribute residues to each active site, including the His68 and His89 from one and His141 from a second subunit [Brosius, J. L., and Colman, R. F. (2000) Biochemistry 39, 13336… (More)


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