1-aminocyclopropane-1-carboxylate catabolic process
3-cyano-L-alanine catabolic process
4-hydroxyproline catabolic process
alanine catabolic process +
beta-alanine catabolic process +
citrulline catabolic process
cysteine catabolic process +
D-amino acid catabolic process +
D-ornithine metabolic process
discadenine catabolic process
gamma-aminobutyric acid catabolic process +
glutamate catabolic process to ornithine
homocysteine catabolic process
hydroxylysine catabolic process
L-alanine biosynthetic process via ornithine
L-amino acid catabolic process +
L-kynurenine catabolic process
L-proline betaine catabolic process
L-tryptophan catabolic process to catechol
lysine catabolic process +
N(omega),N(omega)-dimethyl-L-arginine catabolic process
N(omega)-methyl-L-arginine catabolic process
N-alpha,N-alpha,N-alpha-trimethyl-L-histidine catabolic process
ornithine biosynthetic process
ornithine catabolic process +
The chemical reactions and pathways resulting in the breakdown of ornithine, an amino acid only rarely found in proteins, but which is important in living organisms as an intermediate in the reactions of the urea cycle and in arginine biosynthesis.