Citrulline minangka L-enantiomer saka citrulline.Iki nduweni peran minangka inhibitor EC 1.14.13.39 (nitric oxide synthase), agen protèktif, nutraceutical, mikronutrien, metabolit manungsa, metabolit Escherichia coli, metabolit Saccharomyces cerevisiae lan metabolit tikus.Iki minangka enantiomer saka D-citrulline.Iki minangka tautomer saka zwitterion L-citrulline.