Description and type of inhibition (with respect to L-arginine)

2(S)-Amino-6-boronohexanoic acid hydrochloride hydrochloride (ABH)

A potent, specific, competitive arginase inhibitor

(2R)-2-amino-3-(2-boronoethylsulfanyl)propanoic acid (BEC) hydrochloride

A boronic acid-based arginine analog, which acts as a selective, slow-binding, reversible, competitive arginase inhibitor

NG-Hydroxy-L-arginine (NOHA) acetate salt

Intermediate in the conversion of arginine to NO and citrulline by NO synthase. Acts as reversible competitivearginase inhibitor

Nor-NOHA diacetate salt

More potent than a NOHA inhibitor, which exhibits 10-fold selectivity for human ARG2 over ARG1


Competitive arginase inhibitor

Piceatannol-3’-O-β-d-glucopyranoside (PG)

Competitive arginase inhibitor


Competitive arginase inhibitor


Non-competitive inhibitor