A large cathepsin D-derived fragment from the central part of the fibronectin subunit chains.

@article{Richter1983ALC,
  title={A large cathepsin D-derived fragment from the central part of the fibronectin subunit chains.},
  author={Hartmut Richter and Helmut H{\"o}rmann},
  journal={FEBS letters},
  year={1983},
  volume={155 2},
  pages={317-20}
}
A mild cathepsin D digest of fibronectin only contained single-chain peptides of 200, 140 and 70 kDa and double-chain fragments of about 300 and 140 kDa containing the C-terminal disulfide link. Among the single-chain fragments the 200 kDa peptide was a precursor of the 140 kDa and 70 kDa peptides. The latter was correlated to the N-terminal and the former to the central region of the fibronectin subunit chains.