preferred_name: arginine + H2O => ornithine + urea [ARG2] (Xenopus tropicalis)
preferred_name_lc: arginine + h2o => ornithine + urea [arg2] (xenopus tropicalis)
label: arginine + H2O => ornithine + urea [ARG2] (Xenopus tropicalis)
label_lc: arginine + h2o => ornithine + urea [arg2] (xenopus tropicalis)