Title : Alanine reverses the inhibitory effect of phenylalanine on acetylcholinesterase activity.

Pub. Date : 2002 May-Jun

PMID : 12132693






5 Functional Relationships(s)
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1 The aim of this work was to evaluate, in vitro, the effect of L-alanine (Ala) on suckling rat brain acetylcholinesterase (AChE) and on eel Electrophorus electricus pure AChE inhibited by L-phenylalanine (Phe) as well as to investigate whether Phe or Ala is a competitive inhibitor or an effector of the enzyme. Phenylalanine acetylcholinesterase (Cartwright blood group) Homo sapiens
2 The aim of this work was to evaluate, in vitro, the effect of L-alanine (Ala) on suckling rat brain acetylcholinesterase (AChE) and on eel Electrophorus electricus pure AChE inhibited by L-phenylalanine (Phe) as well as to investigate whether Phe or Ala is a competitive inhibitor or an effector of the enzyme. Phenylalanine acetylcholinesterase (Cartwright blood group) Homo sapiens
3 The aim of this work was to evaluate, in vitro, the effect of L-alanine (Ala) on suckling rat brain acetylcholinesterase (AChE) and on eel Electrophorus electricus pure AChE inhibited by L-phenylalanine (Phe) as well as to investigate whether Phe or Ala is a competitive inhibitor or an effector of the enzyme. Phenylalanine acetylcholinesterase (Cartwright blood group) Homo sapiens
4 AChE activity was determined in brain homogenates and in the pure enzyme after 1 h preincubation with 1.2 mM of Phe or Ala as well as with Phe plus Ala. Phenylalanine acetylcholinesterase (Cartwright blood group) Homo sapiens
5 Ala reversed completely the inhibited AChE by Phe (18-20% in 500-600 microM substrate, p<0.01). Phenylalanine acetylcholinesterase (Cartwright blood group) Homo sapiens