aortic tissue from 11 day old chick embryos is incubated in the presence of [ 14c ] l-proline and [ 3h ] l-valine and the distributions of [ 14c ] proline- , [ 14c ] hydroxyproline-and [ 3h ] valine-labelled proteins on sds-polyacrylamide gels are determined .
C0033382
proline
C0020388
hydroxyproline