[1]  Polgár, L. Isolation of highly active papaya peptidases A and B from commercial chymopapain. Biochim. Biophys. Acta 658 (1981) 262–269. [DOI] [PMID: 7018581]
[2] Buttle, D.J., Kembhavi, A.A., Sharp, S.L., Shute, R.E., Rich, D.H. and Barrett, A.J. Affinity purification of the novel cysteine proteinase papaya proteinase IV and papain from papaya latex. Biochem. J. 261 (1989) 469–476. [PMID: 2505761]
[3] Ritonja, A., Buttle, D.J., Rawlings, N.D., Turk, V. and Barrett, A.J. Papaya proteinase IV amino acid sequence. FEBS Lett. 258 (1989) 109–112. [DOI] [PMID: 2591528]
[4] Buttle, D.J., Ritonja, A., Pearl, L.H., Turk, V. and Barrett, A.J. Selective cleavage of glycyl bonds by papaya proteinase IV. FEBS Lett. 260 (1990) 195–197. [DOI] [PMID: 2404797]
[5] Buttle, D.J., Ritonja, A., Dando, P.M., Abrahamson, M., Shaw, E.N., Wikstrom, P., Turk, V. and Barrett, A.J. Interaction of papaya proteinase IV with inhibitors. FEBS Lett. 262 (1990) 58–60. [DOI] [PMID: 1690669]