Müller W U, Leistner E
Z Naturforsch C Biosci. 1975 Mar-Apr;30(2):253-62. doi: 10.1515/znc-1975-3-419.
Neurospora crassa converts D-lysine to L-pipecolic acid and the latter to L-lysine by a pathway outlined herein and different from mechanisms hitherto known to be involved in interconversions of enantiomers of amino acids.