radiolabelled proline and hydroxyproline were separated on a c8 column ( 10 cm x 4.6 mm i.d . ) with 10.4 mm sodium dodecyl sulphate in water-n-propanol ( 88:12 , v/v ) ( ph 2.6 ) as the mobile phase at a flow-rate of 0.6 ml/min .
C0033382
proline
C0020388
hydroxyproline