(6S)-5,6,7,8-tetrahydrofolyl-(gamma-L-Glu)(n) + (n-1) H2O = (6S)-5,6,7,8-tetrahydrofolate + (n-1) L-glutamate Extracellular or cell-wall bound. Expressed only in young (1-15 day old) leaf, stem and root tissue. Belongs to the peptidase C26 family. Lacks the conserved Cys residue in position 155 and the conserved His residue in position 268 essential for carbopeptidase activity. Its enzyme activity is therefore unsure.