ʻO Citrulline ka L-enantiomer o ka citrulline.He kuleana kona ma ke ʻano he EC 1.14.13.39 (nitric oxide synthase), he mea pale, he nutraceutical, he micronutrient, he metabolite kanaka, he metabolite Escherichia coli, he metabolite Saccharomyces cerevisiae a he metabolite iole.He enantiomer ia o kahi D-citrulline.He tautomer ia o ka L-citrulline zwitterion.