Submicromolar phosphinic inhibitors of Escherichia coli aspartate transcarbamoylase
摘要:
The design, syntheses, and enzymatic activity of two submicromolar competitive inhibitors of aspartate transcarbamoylase ( ATCase) are described. The phosphinate inhibitors are analogs of N-phosphonacetyl-L-aspartate ( PALA) but have a reduced charge at the phosphorus moiety. The mechanistic implications are discussed in terms of a possible cyclic transition-state during enzymatic catalysis. (C) 2008 Elsevier Ltd. All rights reserved.