4.2.1.69 cyanamide + H2O - Solanum tuberosum 18752 4.2.1.69 cyanamide + H2O - Albifimbria verrucaria 18752 4.2.1.69 cyanamide + H2O no constitutive enzyme, induced by addition of cyanamide to growth medium Albifimbria verrucaria 369582 4.2.1.69 additional information not: Arg, Orn, urea, guanidine, guanidino-urea, creatin, creatinin, guanidinoacetate Albifimbria verrucaria 89 4.2.1.69 additional information cyanamide hydratase (cah) gene used as marker system for regeneration of transgenic plants Nicotiana tabacum 89